<div dir="ltr">Hello, Mike!<div><span style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt">>>But I am a bit puzzled. The GLOBAL_REANALYSIS_PHY_001_030 you</span></div><div><span style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt">>>mentioned should be a product of the NEMO model.</span></div><div><span style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt">>>Is this the open boundary forcing data you use?</span><br></div><div><span style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt"><br></span></div><div><font color="#000000" face="Calibri, Arial, Helvetica, sans-serif"><span style="font-size:16px">Oh, yes, it was a misprint - I looked in the another file... Of course, the ERA5 meteorological forcing was taken from </span></font><a href="https://cds.climate.copernicus.eu/">https://cds.climate.copernicus.eu/</a>, while the open boundary conditions for the ocean model - from the GLOBAL_REANALYSIS_PHY_001_030.</div><div><br></div><div>By the way, concerning ERA5 units, some care should be taken. I'm sure you know all of this, as you have already posted, but for the users new to ERA5 reanalysis dataset some details might be useful:</div><div><br></div><div>The ERA5's field 'Mean total precipitation rate' is in [kg m-2 s-1], and dividing it by 1000 kg m-3 makes the field suitable for the MITgcm's EXF package, while ERA5's 'Total precipitation' is in [m]. Also, 'Mean surface downward long-wave and short-wave radiation fluxes' are in [W m-2], while 'Surface solar and thermal radiation downwards' is in [J m-2]. The difference is the multiplier related to the time period between adjacent model records. So, information presented in the Overview table at the ERA5 page should be carefully read. It is not only about units, but also about the ERA5's convention for vertical fluxes' direction.</div><div><br></div><div>I hope you will figure out the couse of difference in your results. Please, let us know when you succeed, the topic is interesting and important indeed.</div><div><br></div><div>Regards,</div><div>Stanislav</div><div><span style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt"><br></span></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">вт, 17 мар. 2020 г. в 08:58, Leming Van <<a href="mailto:ifanliming@outlook.com">ifanliming@outlook.com</a>>:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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Hi, </div>
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I am grateful to everyone for your reply, and here I will respond to your suggestions.<br>
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<span style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt">1.for Dr. Stanislav Martyanov =========================================</span><br>
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<span style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt"><span>Thank you for sharing the meteorological forcing variables used in the ERA5 dataset, which has benefited me a lot. </span></span></div>
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<span style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt"><span><br>
</span><span>But I am a bit puzzled. The GLOBAL_REANALYSIS_PHY_001_030 you mentioned should be a product of the NEMO model. Is this the open boundary forcing data you use?</span><br>
</span></div>
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<span style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt"><span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline">2.for<span> </span></span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline">Estanislao ===================================================</span><br>
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<span style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt"><span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><br>
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<span style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt"><span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><span>Thank you
for your reminding. Before using the data, it is very important to know the unit of the variable, just like the unit of precipitation in ERA5 is kg · m-2 s-1, and the unit of the corresponding
<span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline">
variable</span> in MITgcm-EXF is m · s-1. </span></span></span></span>In this case, you need to divide by the density of fresh water for conversion. </div>
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<span style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt"><span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><span><br>
</span><span>About the unit of long and short wave radiation flux in ERA5, I'm sure that it is W · m-2, and there should be no problem in the unit of other variables.</span><br>
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<span style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt"><span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><span><span style="margin:0px;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline">3.for<span style="margin:0px"> Raf</span></span><span style="margin:0px;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"> =======================================================</span><br>
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Thank you for your experience. The package I use is EXF. I simply looked at the code of EXF and found that it is calling exf_bulkformulae.F for related calculations.</span><span style="font-family:Calibri,Helvetica,sans-serif"> </span>
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<div><span style="font-family:Calibri,Helvetica,sans-serif"><span style="margin:0px;font-family:Calibri,Helvetica,sans-serif;background-color:rgb(255,255,255)">C us - mean wind speed (m/s) at height hu (m)</span><span style="margin:0px;font-family:"Microsoft Yahei UI",Verdana,Simsun,"Segoe UI",-apple-system,system-ui,Roboto,"Helvetica Neue",sans-serif;background-color:rgb(255,255,255)"><br>
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<span style="font-family:Calibri,Helvetica,sans-serif">C th - mean air temperature (K) at height ht (m)</span><br>
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<span style="margin:0px;font-family:Calibri,Helvetica,sans-serif;background-color:rgb(255,255,255)">C qh - mean air humidity (kg/kg) at height hq (m)</span><br>
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<div><span style="font-family:Calibri,Helvetica,sans-serif">As for the definition of various variables in height, exf_readparms. F has made relevant definitions, and I have checked that it is correct.</span></div>
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<span> zref = 10.000 _d 0<br>
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<div> hu = 10.000 _d 0<br>
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<span> ht = 2.000 _d 0</span>
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<span style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt"><span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><span><span style="margin:0px;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><span style="margin:0px;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline">4.for<span style="margin:0px"> Hong</span></span><span style="margin:0px;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"> =======================================================</span><br>
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<span style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt"><span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><span><span style="margin:0px;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><span style="margin:0px;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><br>
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<span style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt"><span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><span><span style="margin:0px;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><span style="margin:0px;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline">Thank
you for your checking. I'm sorry I didn't make it clear. I put net short-wave radiation flux (nswrs) in swfluxfile, since swdown will be ignored when using swdown and swflux at the same time, so </span></span></span></span></span></span><span style="font-size:12pt">I
removed swdownfile.</span></div>
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<span style="font-family:Calibri,Helvetica,sans-serif">(PID.TID 0000.0001) ** WARNING ** EXF_CHECK: "swdown" field is loaded from file but not used within pkg/exf</span>
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<div><font face="Calibri, Helvetica, sans-serif">Next ============================================================</font></div>
<div><font face="Calibri, Helvetica, sans-serif"></font><span style="font-family:Calibri,Helvetica,sans-serif">It seems that you don't have the same problem as me. Next, I plan to use ERA5 and NCEP data at the same time to find the reason for the difference
between the results of model by the method of exclusion.</span>
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<span style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt"><span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><span><span style="margin:0px;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><span style="margin:0px;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><br>
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<span style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt"><span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><span><span style="margin:0px;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><span style="margin:0px;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline">Best,</span></span></span></span></span></span></div>
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<span style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt"><span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><span><span style="margin:0px;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><span style="margin:0px;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline">-Mike</span></span></span></span></span></span></div>
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<div id="gmail-m_9130568462497490429divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>发件人:</b> MITgcm-support <<a href="mailto:mitgcm-support-bounces@mitgcm.org" target="_blank">mitgcm-support-bounces@mitgcm.org</a>> 代表 Raphael Dussin <<a href="mailto:raphael.dussin@gmail.com" target="_blank">raphael.dussin@gmail.com</a>><br>
<b>发送时间:</b> 2020年3月16日 20:24<br>
<b>收件人:</b> <a href="mailto:mitgcm-support@mitgcm.org" target="_blank">mitgcm-support@mitgcm.org</a> <<a href="mailto:mitgcm-support@mitgcm.org" target="_blank">mitgcm-support@mitgcm.org</a>><br>
<b>主题:</b> Re: [MITgcm-support] 回复: 转发: The obvious difference between ERA5 and NCEP-R1 forcing</font>
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<div>Have you checked the heights for the atmospheric variables are correctly set?</div>
<div>you should have something like this in data.blk</div>
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<div>zref = 10.0</div>
<div>zwd = 10.0</div>
<div>zth = 2.0 </div>
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<div>I've seen a lot of runs going off the rails because of this kind of problem:</div>
<div>If the height is not set right, the fluxes are not either and you end up with large biases.</div>
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<div>hope it helps,</div>
<div>Raf</div>
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<div>Raf</div>
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<div dir="ltr">Le lun. 16 mars 2020 à 04:49, Stanislav Martyanov <<a href="mailto:martyanov.sd@gmail.com" target="_blank">martyanov.sd@gmail.com</a>> a écrit :<br>
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<blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">Hello, Mike!
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<div>I have recently downloaded the ERA5 reanalysis data (daily fields, <span style="color:rgb(63,63,65);font-size:11px;background-color:rgb(245,245,245)">
GLOBAL_REANALYSIS_PHY_001_030</span> as labeled in Copernicus network) in order to construct the meteorological forcing for a regional ocean model (Kara Sea) based on the MITgcm. I chose the following fields:</div>
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<div>% 10m u-component of wind <br>
% 10m v-component of wind <br>
% 2m dewpoint temperature <br>
% 2m temperature <br>
% Mean total precipitation rate<br>
% Mean sea level pressure<br>
% Mean surface downward long-wave radiation flux<br>
% Mean surface downward short-wave radiation flux <br>
</div>
<div><br>
</div>
<div>In order to compute the specific humidity, as advised in the ERA5 documentation, I used formulas given in IFS Documentation CY46R1 - part-iv-physical-processes (2m dewpoint temperature and Mean sea level pressure are used there).</div>
<div><br>
</div>
<div>Regards,</div>
<div><br>
</div>
<div>Dr. Stanislav Martyanov,</div>
<div>Shirshov Institute of Oceanology,</div>
<div>Russia</div>
<div><br>
</div>
</div>
<br>
<div>
<div dir="ltr">пн, 16 мар. 2020 г. в 09:27, Leming Van <<a href="mailto:ifanliming@outlook.com" target="_blank">ifanliming@outlook.com</a>>:<br>
</div>
<blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
Hi, Matt</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
Thank you for your advice. I'm sorry that I didn't provide enough information.</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
I downloaded the ERA5 dataset at <a href="https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels?tab=form" id="gmail-m_9130568462497490429x_gmail-m_-7181925027433042385gmail-m_-522896234706765667LPlnk942224" target="_blank">https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels?tab=form</a></div>
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Copernicus Climate Data Store</a></div>
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<a href="http://cds.climate.copernicus.eu" target="_blank">cds.climate.copernicus.eu</a></div>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
And I selected precip[<span style="font-family:"Helvetica Neue";font-size:12px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;color:rgb(0,0,0)">mean_total_precipitation_rate. kg m-2 s-1</span><span>], atemp[</span><span style="font-family:"Helvetica Neue";font-size:12px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;color:rgb(0,0,0)">2m_temperature.
K</span><span>], swdown[</span><span style="font-family:"Helvetica Neue";font-size:12px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;color:rgb(0,0,0)">mean_surface_downward_short_wave_radiation_flux. W m-2</span><span>], lwdown[</span><span style="font-family:"Helvetica Neue";font-size:12px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;color:rgb(0,0,0)">mean_surface_downward_long_wave_radiation_flux.
W m-2</span><span>], uwind[</span><span style="font-family:"Helvetica Neue";font-size:12px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;color:rgb(0,0,0)">10m_u_component_of_wind.</span><span>
</span><span style="font-family:"Helvetica Neue";font-size:12px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;color:rgb(0,0,0)">m s-1</span><span>], vwind[</span><span style="font-family:"Helvetica Neue";font-size:12px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;color:rgb(0,0,0)">10m_v_component_of_wind.</span><span>
</span><span style="font-family:"Helvetica Neue";font-size:12px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;color:rgb(0,0,0)">m s-1</span><span>], because ERA5 does not provide aqh directly, I used air pressure[</span><span style="font-family:"Helvetica Neue";font-size:12px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;color:rgb(0,0,0)">surface_pressure</span><span>
</span><span style="font-family:"Helvetica Neue";font-size:12px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;color:rgb(0,0,0)">Pa</span><span>] and dewpoint temperature[</span><span style="font-family:"Helvetica Neue";font-size:12px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;color:rgb(0,0,0)">2m_dewpoint_temperature</span><span>
</span><span style="font-family:"Helvetica Neue";font-size:12px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;color:rgb(0,0,0)">K</span><span>] to calculate <span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline">aqh.</span></span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
</div>
<div><span style="font-family:Calibri,Helvetica,sans-serif">Since the data is hourly, I only downloaded the area of interest(bigger than South China Sea), and besides, the data is zonally aligned from 35N to 5S, I flipped it to 5S-35N. </span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline">I compared the ERA5 with NCEP, and I don't think there is much difference except for the short-wave radiation. Please check the attachment.<br>
</span></span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><br>
</span></span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline">I only have one question, do you choose the same ERA5 variables like me? If not, could you tell me which variables you choose?</span></span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><br>
</span></span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"></span></span></div>
<span style="font-family:Calibri,Helvetica,sans-serif">Please let me know if any other files are needed for diagnosis. </span><span style="font-family:Calibri,Helvetica,sans-serif">Thanks in advance.</span>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><br>
</span></span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><br>
</span></span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline">-Mike</span></span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><br>
</span></span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><br>
</span></span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline">Here is the setting of my data.exf<br>
</span></span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><br>
</span></span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline"><span># $Header: /u/gcmpack/MITgcm_contrib/eh3/llc/ecco-godae/input_50lev/data.exf,v 1.1 2007/03/06 19:13:51 heimbach Exp $<br>
</span>
<div>#<br>
</div>
<div># *********************<br>
</div>
<div># External Forcing Data<br>
</div>
<div># *********************<br>
</div>
<div> &EXF_NML_01<br>
</div>
<div> useAtmWind = .TRUE.,<br>
</div>
<div># rotateStressOnAgrid = .TRUE.,<br>
</div>
<div> exf_iprec = 32,<br>
</div>
<div> exf_yftype = 'RL',<br>
</div>
<div> useExfYearlyFields = .false.,<br>
</div>
<div> twoDigitYear = .false.,<br>
</div>
<div> useExfCheckRange =.false.,<br>
</div>
<div> &<br>
</div>
<div><br>
</div>
<div> &EXF_NML_02<br>
</div>
<div> climsstfile = 'woa13_sst_monthly_globe_relax.box',<br>
</div>
<div> climsssfile = 'woa13_sss_monthly_globe_relax.box',<br>
</div>
<div> precipfile = 'era5_prate_2002-2005_hourly.box',<br>
</div>
<div> atempfile = 'era5_air_2002-2005_hourly.box',<br>
</div>
<div> aqhfile = 'era5_shum_2002-2005_hourly.box',<br>
</div>
<div> swdownfile = '',<br>
</div>
<div> swfluxfile = 'era5_nswrs_2002-2005_hourly.box',<br>
</div>
<div> lwfluxfile = '',<br>
</div>
<div> lwdownfile = 'era5_dlwrf_2002-2005_hourly.box',<br>
</div>
<div> uwindfile = 'era5_uwnd_2002-2005_hourly.box',<br>
</div>
<div> vwindfile = 'era5_vwnd_2002-2005_hourly.box',<br>
</div>
<div> runofffile = 'run-off.bin_1x1',<br>
</div>
<div># <br>
</div>
<div> climsststartdate1 = 20020101,<br>
</div>
<div> climsststartdate2 = 000000,<br>
</div>
<div> climsstperiod = -12,<br>
</div>
<div> climsssstartdate1 = 20020101,<br>
</div>
<div> climsssstartdate2 = 000000,<br>
</div>
<div> climsssperiod = -12,<br>
</div>
<div> runoffstartdate1 = 20020101,<br>
</div>
<div> runoffstartdate2 = 000000,<br>
</div>
<div> runoffperiod = -12,<br>
</div>
<div># <br>
</div>
<div> precipstartdate1=20020101,<br>
</div>
<div> precipstartdate2=000000,<br>
</div>
<div> precipperiod=3600.0,<br>
</div>
<div> atempstartdate1=20020101,<br>
</div>
<div> atempstartdate2=000000,<br>
</div>
<div> atempperiod=3600.0,<br>
</div>
<div> aqhstartdate1=20020101,<br>
</div>
<div> aqhstartdate2=000000,<br>
</div>
<div> aqhperiod=3600.0,<br>
</div>
<div> swdownstartdate1=20020101,<br>
</div>
<div> swdownstartdate2=000000,<br>
</div>
<div> swdownperiod=3600.0,<br>
</div>
<div> lwfluxstartdate1=20020101,<br>
</div>
<div> lwfluxstartdate2=000000,<br>
</div>
<div> lwfluxperiod=3600.0,<br>
</div>
<div> swfluxstartdate1=20020101,<br>
</div>
<div> swfluxstartdate2=000000,<br>
</div>
<div> swfluxperiod=3600.0,<br>
</div>
<div> lwdownstartdate1=20020101,<br>
</div>
<div> lwdownstartdate2=000000,<br>
</div>
<div> lwdownperiod=3600.0,<br>
</div>
<div> uwindstartdate1=20020101,<br>
</div>
<div> uwindstartdate2=000000,<br>
</div>
<div> uwindperiod=3600.0,<br>
</div>
<div> vwindstartdate1=20020101,<br>
</div>
<div> vwindstartdate2=000000,<br>
</div>
<div> vwindperiod=3600.0,<br>
</div>
<div> hfluxstartdate1=20020101,<br>
</div>
<div> hfluxstartdate2=000000,<br>
</div>
<div> hfluxperiod=3600.0,<br>
</div>
<div> sfluxstartdate1=20020101,<br>
</div>
<div> sfluxstartdate2=000000,<br>
</div>
<div> sfluxperiod=3600.0,<br>
</div>
<div> ustressstartdate1=20020101,<br>
</div>
<div> ustressstartdate2=000000,<br>
</div>
<div> ustressperiod=3600.0,<br>
</div>
<div> vstressstartdate1=20020101,<br>
</div>
<div> vstressstartdate2=000000,<br>
</div>
<div> vstressperiod=3600.0,<br>
</div>
<div> &<br>
</div>
<div><br>
</div>
<div> &EXF_NML_03<br>
</div>
<div> exf_inscal_precip=1.,<br>
</div>
<div> exf_offset_atemp=0.0,<br>
</div>
<div> exf_inscal_runoff = 3.1710e-08,<br>
</div>
<div> &<br>
</div>
<div><br>
</div>
<div> &EXF_NML_04<br>
</div>
<div> precip_lon0 = 95.0D0,<br>
</div>
<div> precip_lon_inc = 0.25D0,<br>
</div>
<div> precip_lat0 = -5.0D0,<br>
</div>
<div> precip_lat_inc = 160*0.25D0,<br>
</div>
<div> precip_nlon = 160, <br>
</div>
<div> precip_nlat = 160,<br>
</div>
<div># <br>
</div>
<div> atemp_lon0 = 95.0D0,<br>
</div>
<div> atemp_lon_inc = 0.25D0,<br>
</div>
<div> atemp_lat0 = -5.0D0,<br>
</div>
<div> atemp_lat_inc = 160*0.25D0,<br>
</div>
<div> atemp_nlon = 160, <br>
</div>
<div> atemp_nlat = 160,<br>
</div>
<div># <br>
</div>
<div> aqh_lon0 = 95.0D0,<br>
</div>
<div> aqh_lon_inc = 0.25D0,<br>
</div>
<div> aqh_lat0 = -5.0D0,<br>
</div>
<div> aqh_lat_inc = 160*0.25D0,<br>
</div>
<div> aqh_nlon = 160, <br>
</div>
<div> aqh_nlat = 160,<br>
</div>
<div># <br>
</div>
<div> swdown_lon0 = 95.0D0,<br>
</div>
<div> swdown_lon_inc = 0.25D0,<br>
</div>
<div> swdown_lat0 = -5.0D0,<br>
</div>
<div> swdown_lat_inc = 160*0.25D0,<br>
</div>
<div> swdown_nlon = 160, <br>
</div>
<div> swdown_nlat = 160,<br>
</div>
<div># <br>
</div>
<div> lwflux_lon0 = 95.0D0,<br>
</div>
<div> lwflux_lon_inc = 0.25D0,<br>
</div>
<div> lwflux_lat0 = -5.0D0,<br>
</div>
<div> lwflux_lat_inc = 160*0.25D0,<br>
</div>
<div> lwflux_nlon = 160, <br>
</div>
<div> lwflux_nlat = 160,<br>
</div>
<div># <br>
</div>
<div> swflux_lon0 = 95.0D0,<br>
</div>
<div> swflux_lon_inc = 0.25D0,<br>
</div>
<div> swflux_lat0 = -5.0D0,<br>
</div>
<div> swflux_lat_inc = 160*0.25D0,<br>
</div>
<div> swflux_nlon = 160, <br>
</div>
<div> swflux_nlat = 160,<br>
</div>
<div># <br>
</div>
<div> lwdown_lon0 = 95.0D0,<br>
</div>
<div> lwdown_lon_inc = 0.25D0,<br>
</div>
<div> lwdown_lat0 = -5.0D0,<br>
</div>
<div> lwdown_lat_inc = 160*0.25D0,<br>
</div>
<div> lwdown_nlon = 160, <br>
</div>
<div> lwdown_nlat = 160,<br>
</div>
<div>#<br>
</div>
<div> uwind_lon0 = 95.0D0,<br>
</div>
<div> uwind_lon_inc = 0.25D0,<br>
</div>
<div> uwind_lat0 = -5.0D0,<br>
</div>
<div> uwind_lat_inc = 160*0.25D0,<br>
</div>
<div> uwind_nlon = 160,<br>
</div>
<div> uwind_nlat = 160,<br>
</div>
<div># <br>
</div>
<div> vwind_lon0 = 95.0D0,<br>
</div>
<div> vwind_lon_inc = 0.25D0,<br>
</div>
<div> vwind_lat0 = -5.0D0,<br>
</div>
<div> vwind_lat_inc = 160*0.25D0,<br>
</div>
<div> vwind_nlon = 160,<br>
</div>
<div> vwind_nlat = 160,<br>
</div>
<div>#<br>
</div>
<div> ustress_lon0 = 95.0D0,<br>
</div>
<div> ustress_lon_inc = 0.25D0,<br>
</div>
<div> ustress_lat0 = -5.0D0,<br>
</div>
<div> ustress_lat_inc = 160*0.25D0,<br>
</div>
<div> ustress_nlon = 160,<br>
</div>
<div> ustress_nlat = 160,<br>
</div>
<div># <br>
</div>
<div> vstress_lon0 = 95.0D0,<br>
</div>
<div> vstress_lon_inc = 0.25D0,<br>
</div>
<div> vstress_lat0 = -5.0D0,<br>
</div>
<div> vstress_lat_inc = 160*0.25D0,<br>
</div>
<div> vstress_nlon = 160,<br>
</div>
<div> vstress_nlat = 160, <br>
</div>
<div>#<br>
</div>
<div> hflux_lon0 = 95.0D0,<br>
</div>
<div> hflux_lon_inc = 0.25D0,<br>
</div>
<div> hflux_lat0 = -5.0D0,<br>
</div>
<div> hflux_lat_inc = 160*0.25D0,<br>
</div>
<div> hflux_nlon = 160,<br>
</div>
<div> hflux_nlat = 160,<br>
</div>
<div># <br>
</div>
<div> sflux_lon0 = 95.0D0,<br>
</div>
<div> sflux_lon_inc = 0.25D0,<br>
</div>
<div> sflux_lat0 = -5.0D0,<br>
</div>
<div> sflux_lat_inc = 160*0.25D0,<br>
</div>
<div> sflux_nlon = 160,<br>
</div>
<div> sflux_nlat = 160,<br>
</div>
<div>#<br>
</div>
<div> runoff_lon0 = 0.50D0,<br>
</div>
<div> runoff_lon_inc = 1.0D0,<br>
</div>
<div> runoff_lat0 = -79.5D0,<br>
</div>
<div> runoff_lat_inc = 159*1.0D0,<br>
</div>
<div> runoff_nlon = 360,<br>
</div>
<div> runoff_nlat = 160,<br>
</div>
<div>#<br>
</div>
<div> climsst_lon0 = -179.875D0,<br>
</div>
<div> climsst_lon_inc = 0.25D0,<br>
</div>
<div> climsst_lat0 = -89.875D0,<br>
</div>
<div> climsst_lat_inc = 719*0.25D0,<br>
</div>
<div> climsst_nlon = 1440,<br>
</div>
<div> climsst_nlat = 720,<br>
</div>
<div>#<br>
</div>
<div> climsss_lon0 = -179.875D0,<br>
</div>
<div> climsss_lon_inc = 0.25D0,<br>
</div>
<div> climsss_lat0 = -89.875D0,<br>
</div>
<div> climsss_lat_inc = 719*0.25D0,<br>
</div>
<div> climsss_nlon = 1440,<br>
</div>
<div> climsss_nlat = 720,<br>
</div>
<div># <br>
</div>
<div> &<br>
</div>
<div><br>
</div>
<div> &EXF_NML_OBCS <br>
</div>
<div> obcsNstartdate1 = 20020101,<br>
</div>
<div> obcsNstartdate2 = 000000,<br>
</div>
<div> obcsNperiod = 2628000.0,<br>
</div>
<div> obcsEstartdate1 = 20020101,<br>
</div>
<div> obcsEstartdate2 = 000000,<br>
</div>
<div> obcsEperiod = 2628000.0,<br>
</div>
<div> obcsSstartdate1 = 20020101,<br>
</div>
<div> obcsSstartdate2 = 000000,<br>
</div>
<div> obcsSperiod = 2628000.,<br>
</div>
<div> &<br>
</div>
<span></span><br>
</span></span></div>
<div id="gmail-m_9130568462497490429x_gmail-m_-7181925027433042385gmail-m_-522896234706765667appendonsend"></div>
<hr style="display:inline-block;width:98%">
<div id="gmail-m_9130568462497490429x_gmail-m_-7181925027433042385gmail-m_-522896234706765667divRplyFwdMsg" dir="ltr">
<font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>发件人:</b> MITgcm-support <<a href="mailto:mitgcm-support-bounces@mitgcm.org" target="_blank">mitgcm-support-bounces@mitgcm.org</a>> 代表 Matthew Mazloff <<a href="mailto:mmazloff@ucsd.edu" target="_blank">mmazloff@ucsd.edu</a>><br>
<b>发送时间:</b> 2020年3月16日 0:44<br>
<b>收件人:</b> <a href="mailto:mitgcm-support@mitgcm.org" target="_blank">mitgcm-support@mitgcm.org</a> <<a href="mailto:mitgcm-support@mitgcm.org" target="_blank">mitgcm-support@mitgcm.org</a>><br>
<b>主题:</b> Re: [MITgcm-support] 转发: The obvious difference between ERA5 and NCEP-R1 forcing</font>
<div> </div>
</div>
<div>Hi Mike
<div><br>
</div>
<div>It is possible it could give worse results, but very unlikely. However its too hard for me to diagnose what is going on. There are many variables to your problem.</div>
<div><br>
</div>
<div>
<div>For ERA5 I have this in my data.exf:</div>
<div> &EXF_NML_03<br>
exf_offset_atemp = 273.15,<br>
exf_inscal_swdown = -1.0,<br>
exf_inscal_lwdown = -1.0,<br>
<br>
<div>Not sure how to help you, </div>
<div>Matt</div>
<div><br>
</div>
<div><br>
</div>
<div>
<div><br>
<blockquote type="cite">
<div>On Mar 15, 2020, at 5:41 AM, Leming Van <<a href="mailto:ifanliming@outlook.com" target="_blank">ifanliming@outlook.com</a>> wrote:</div>
<br>
<div>
<div style="font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt">
<span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt">Hi, everyone</span><br>
</div>
<div style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none">
<div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt">
<div style="margin:0px;font-size:12pt;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255)">
<br>
</div>
<div style="margin:0px;font-size:12pt;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255)">
Recently I tried to change forcing dataset from NCEP-R1(6-hourly) to ERA5(hourly), but the results of them look so different. I compared the results of NCEP-R1 with the reanalysis data of HYCOM, and these two data look similar. </div>
<div style="margin:0px;font-size:12pt;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255)">
<br>
</div>
<div style="margin:0px;font-size:12pt;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255)">
Did I pick the wrong variables from ERA5? Or d<span style="margin:0px">oes this mean that higher temporal and spatial resolution atmospheric forcing ERA5 results in worse simulation results than lower resolution NCEP-R1?</span></div>
<div style="margin:0px;font-size:12pt;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255)">
<span style="margin:0px"><br>
</span></div>
<div style="margin:0px;font-size:12pt;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255)">
I put the results at here, <a href="https://1drv.ms/u/s!AoS5GLJhmvDtjB5Ovnz63FidKeMo?e=c2hS7z" id="gmail-m_9130568462497490429x_gmail-m_-7181925027433042385gmail-m_-522896234706765667LPlnk425773" target="_blank">https://1drv.ms/u/s!AoS5GLJhmvDtjB5Ovnz63FidKeMo?e=c2hS7z</a></div>
<div style="margin:0px;font-size:12pt;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255)">
Suggestions are<span> </span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255);display:inline">welcome</span>.<br>
</div>
<div style="margin:0px;font-size:12pt;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255)">
<br>
</div>
<div style="margin:0px;font-size:12pt;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255)">
<br>
</div>
<div style="margin:0px;font-size:12pt;font-family:Calibri,Arial,Helvetica,sans-serif;background-color:rgb(255,255,255)">
-Mike</div>
<br>
</div>
</div>
</div>
<span style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;float:none;display:inline">_______________________________________________</span><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none">
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