source: TOOLS/CMIP6_FORCING/SOLAR/README @ 3381

Last change on this file since 3381 was 3381, checked in by jgipsl, 4 years ago

Initial version of scripts to create solar forcings.

O Boucher

File size: 1.9 KB
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1Solar forcing dataset from CMIP6
2See http://www.wcrp-climate.org/wgcm-cmip/wgcm-cmip6
3and http://solarisheppa.geomar.de/cmip6
4
5Version 3.1
6Not distributed through ESGF yet
7
8Data was processed by Rong-Ming in June 2016 and reporcessed in October 2016 by Olivier Boucher.
9The final versions of the script are CMIP6_historical.m and CMIP6_piControl.m
10run matlab on a line command
11> run CMIP6_historical.m
12A script process.sh runs all scripts and post-processes the files
13
14The data are used to prescribe the solar constant (tsi) and its distribution (ssi_frac) in the new
15(RRTM) SW scheme of the LMDz model. This is activated with the ok_suntime_rrtm=y flag.
16The solar constant and RSUN are output in the paramphy netcdf output file.
17
18Daily data are used. The number of timesteps in the nc file has to match the number of days
19of the year in the model (ie 360, 365 or 366 days). Otherwise the model stops.
20
21Files are prepared for two bands (NSW=2) or 6 bands (NSW=6) option. Default NSW=6 is used !
22
23For piControl and pdControl, a single value (repeated over the number of days) is used:
24solarforcing_v3.1_XXControl_ave_Ybands_ZZZdays.nc
25XX=pi or pd for pre-industrial or present-day control
26Y=2 or 6 depending on whether NSW=2 or 6
27ZZZ=360, 365 or 366 days according to which calendar (and number of days in the year) is chosen.
28
29The average for piControl consists of the first two solar cycles after 1850 (as per CMIP6 protocol)
30The average for pdControl consists of a 1991-2010 average (not an official CMIP6 run).
31
32Annual files are available for the historical and future period:
33solarforcing_v3.1_daily_6bands_XXXX.nc
34where XXXX is the year. The files are for a Gregorian calendar (365 and 366 days according to the year).
35
36There is also a scenario with a lower solar constant in 21st century for sensitivity study.
37This is not an official CMIP6 scenario though.
38
39The solar forcing file is to be renamed solarforcing.nc in the running directory.
40 
41Olivier Boucher
4211/10/2016
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