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SST in RCP 4.5 http://forum.precisrcm.com/viewtopic.php?f=1&t=119 |
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Author: | geetha [ Mon Dec 19, 2016 3:22 pm ] | |||
Post subject: | SST in RCP 4.5 | |||
Hi, I have completed running HadGEM historical and RCP 4.5. While analyzing the historical data, the SST value is closer to the observation data. But in RCP 4.5, the value starts from 2°C which is totally wrong.I am unable to figure out what could have gone wrong. I have enclosed the sample files of historical and RCP 4.5 for your kind reference. Kindly help me on this regard.
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Author: | saeed.sadri [ Fri Dec 23, 2016 11:19 am ] |
Post subject: | Re: SST in RCP 4.5 |
Dear Geetha, I need to consult my colleagues on this. So we will get back to you shortly. Regards, Saeed |
Author: | geetha [ Sat Dec 24, 2016 5:43 am ] |
Post subject: | Re: SST in RCP 4.5 |
Ok. Thank you Saeed. |
Author: | dmhg [ Mon Jan 02, 2017 5:46 pm ] |
Post subject: | Re: SST in RCP 4.5 |
Hi Geetha, Can you clarify if you are running PRECIS (HadRM3P) or HadGEM3-RA? For PRECIS there was a bug in the RCP4.5 ancillaries that made them 100 times to small (as you found). If you are in fact using PRECIS, please do this 1) Download replacement files http://www.precisrcm.com/ANCIL/master/H ... s*_v1.*.gz e.g. http://www.precisrcm.com/ANCIL/master/H ... v1.2006.gz http://www.precisrcm.com/ANCIL/master/H ... v1.2011.gz and so on -- there are quite a few files. 2) Remove the incorrect files Code: cd $ANCIL_MASTER rm HadGEM2-ES_rcp45_sst* rm HadGEM2-ES_rcp45_seaice* 3) Copy the files downloaded from 1) into $ANCIL_MASTER 4) unzip them Code: gunzip *.gz 5) Replace the ancil config file Code: cd $UMDIR/vn4.5/ctldata/ancil_config mv akwsl akwsl.old wget http://www.precisrcm.com/ANCIL/ancil_config/akwsl You should now be able to start over downscaling RCP4.5 HadGEM2-ES with correct sst and sea ice values Let us know if you have any more questions. Thanks David |
Author: | geetha [ Tue Jan 03, 2017 2:57 pm ] |
Post subject: | Re: SST in RCP 4.5 |
Dear David, I am running PRECIS (HadRM3P). Initially, ancillary files for HadGEM-ES 4.5 were missing in $ANCIL_MASTER directory. I have queried in precis forum with the subject entitled "Ancillary files missing while running RCP 4.5". Mr.Simon replied my query and asked me to download the ancillary files from http://www.precisrcm.com/ANCIL_PRECIS2/. Further he suggested me to replace the ancil_config file with http://www.precisrcm.com/ANCIL_PRECIS2/ ... nfig/akwsl. I have completed running the model with those modifications. Are the ancillary files downloaded from http://www.precisrcm.com/ANCIL_PRECIS2/ wrong? Do I have to run the model from the beginning by replacing the ancillary files as suggested by you? Kindly clarify my queries. Regards, Geetha |
Author: | dmhg [ Fri Jan 13, 2017 2:24 pm ] |
Post subject: | Re: SST in RCP 4.5 |
Hi Geetha, The corrected HadGEM2-ES rcp4.5 ancillaries all end in _v1. That is the key. If you followed my instructions in my previous message, you will have restarted the experiment from the beginning with a modified config file that tells PRECIS to use the repaired SSTs (all of which end in _v1) rather than the old, faulty files. Does this answer your question? If not, let me know David |
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