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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><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 !important">2.for<span> </span></span><span style="font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important">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 !important"><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 !important"><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 !important">
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 !important"><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 !important"><span><span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important">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 !important"> =======================================================</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 !important"><span><span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important"></span></span></span></span></span></div>
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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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</span></div>
<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>
</span>
<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 !important"><span><span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important"><span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important">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 !important"> =======================================================</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 !important"><span><span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important"><span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important"><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 !important"><span><span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important"><span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important">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 !important"><span><span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important"><span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important"><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 !important"><span><span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important"><span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important"><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 !important"><span><span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important"><span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important"><br>
</span></span></span></span></span></span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<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 !important"><span><span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important"><span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important">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 !important"><span><span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important"><span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important">-Mike</span></span></span></span></span></span></div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>发件人:</b> MITgcm-support <mitgcm-support-bounces@mitgcm.org> 代表 Raphael Dussin <raphael.dussin@gmail.com><br>
<b>发送时间:</b> 2020年3月16日 20:24<br>
<b>收件人:</b> mitgcm-support@mitgcm.org <mitgcm-support@mitgcm.org><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>
<div><br>
</div>
<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" class="x_gmail_attr">Le lun. 16 mars 2020 à 04:49, Stanislav Martyanov <<a href="mailto:martyanov.sd@gmail.com">martyanov.sd@gmail.com</a>> a écrit :<br>
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<div dir="ltr">Hello, Mike!
<div><br>
</div>
<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>
<div><br>
</div>
<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>
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<div dir="ltr" class="x_gmail_attr">пн, 16 мар. 2020 г. в 09:27, Leming Van <<a href="mailto:ifanliming@outlook.com" target="_blank">ifanliming@outlook.com</a>>:<br>
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Hi, Matt</div>
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Thank you for your advice. I'm sorry that I didn't provide enough information.</div>
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<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="x_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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<br>
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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>
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<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>
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<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>
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<span><span style="font-family:Calibri,Arial,Helvetica,sans-serif; background-color:rgb(255,255,255); display:inline"><br>
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<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>
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<span><span style="font-family:Calibri,Arial,Helvetica,sans-serif; background-color:rgb(255,255,255); display:inline"><br>
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<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>
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<span><span style="font-family:Calibri,Arial,Helvetica,sans-serif; background-color:rgb(255,255,255); display:inline"><br>
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<span><span style="font-family:Calibri,Arial,Helvetica,sans-serif; background-color:rgb(255,255,255); display:inline"><br>
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<span><span style="font-family:Calibri,Arial,Helvetica,sans-serif; background-color:rgb(255,255,255); display:inline">-Mike</span></span></div>
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<span><span style="font-family:Calibri,Arial,Helvetica,sans-serif; background-color:rgb(255,255,255); display:inline"><br>
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<span><span style="font-family:Calibri,Arial,Helvetica,sans-serif; background-color:rgb(255,255,255); display:inline"><br>
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<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>
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<span><span style="font-family:Calibri,Arial,Helvetica,sans-serif; background-color:rgb(255,255,255); display:inline"><br>
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<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="x_gmail-m_-7181925027433042385gmail-m_-522896234706765667appendonsend"></div>
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<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">
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<br>
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<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>
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<br>
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<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>
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<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="x_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>
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<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>
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