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Datasets

C2SM provides a number of datasets (see below). In addition, the Forest Ecology group has put together information about commonly used datasets and how to use them here.

Datasets provided by C2SM

We provide different climate datasets such as CMIP5, CMIP6 or CORDEX, as downloaded from the original sources, as well as processed datasets such as the so-called CMIP6-NextGeneration (CMIP6-ng) archive. If you need access to other climate datasets contact us at request@c2sm.ethz.ch and we will try to help.

The table below shows an overview over the datasets we already provide.

Climate Model Data

Archive Size (#Files) (3) Location Access Status Variables Resolution
"Raw" CMIP Archives (as downloaded from ESGF)
CMIP2 0.01 TB (500) IAC direct / rsync frozen (2010-10)   native (1)
CMIP3 6 TB (40000) IAC direct / rsync frozen (2016-12)   native
CMIP5 130 TB (700000) IAC direct / rsync monthly updated   native
CMIP6 520 TB (5500000) IAC, Euler (4) direct / rsync weekly updated   native
CMIP next generation (checked, standardized, regridded to common grid)
CMIP3-ng (2) 0.5 TB (5000) IAC direct / rsync frozen (2019-03)   native and 2.5x2.5
CMIP5-ng (2) 33 TB (100000) IAC direct / rsync frozen (2019-09)   native and 2.5x2.5
CMIP6-ng (2) 175 TB (500000) IAC, Euler (4) direct / rsync ongoing monthly: co2mass, hfls, mrro, npp, rlds, rsdscs, rtmt, tasmin, tsl, evspsbl, hfss, mrros, pr, rldscs, rsdt, sftlf, tauu, zg500, evspsblsoi, hurs, mrso prw, rlus, rsus, siconc, tauv, evspsblveg, huss, mrsol, psl, rlut, rsuscs, ta, tos, areacella, gpp, lai, mrsos, ra, rlutcs, rsut, tas, tran, clt, hfds, nbp, rh, rsds, rsutcs, tasmax, treeFrac, zos native and 2.5x2.5
daily: pr, tas, tasmin, tasmax, zg500, mrro native and 2.5x2.5
"Raw" CORDEX (as downloaded)
CORDEX 370 TB (800000) IAC, Euler (4), CSCS (5) direct / rsync monthly updated   0.44 and 0.11
CORDEX-ReKliEs 23 TB (100000) IAC, Euler (4) direct monthly updated   0.11
CORDEX data for climate scenarios (checked, regridded to identical grids if necessary)
CORDEX.ch2018 11 TB (1800) IAC, CSCS (5) direct frozen (2019-04) daily: hurs, huss, pr, rsds, sfcWind, sfcWindmax, snw, tas, tasmax, tasmin 0.44 and 0.11
CORDEX.ch2025 46 TB (3500) IAC (6) direct ongoing daily: pr, tas, tasmax, tasmin, zg500 0.44 and 0.11
CORDEX-FPSCONV 30T (22'949) CSCS (7) direct ongoing 1hr: pr, tas, daily: pr, tas, tasmax, tasmin 2-3km

(1) native means every model on their native grid they were run on

(2) CMIP-ng: Next Generation archives were maintained by Reto's group (Jan Sedlacek/Lukas Brunner)
Ruth Lorenz / C2SM took over cmip6-ng in 2022. contact: cmip6-archive@env.ethz.ch, documentation: https://doi.org/10.5281/zenodo.3734128

(3) Stand June 2021

(4) cd /nfs/atmos/c2sm

(5) cd /store/c2sm/c2sme

(6) cd /net/ch4/data/cordex.ch2025/

(7) cd /store/c2sm/c2sme/CH202X/CORDEX-FPSCONV/ALP-3/

Observational and Reanalysis Data

Archive Size (#Files) (1) Location Access Status time period Variables Temporal Resolution Spatial Resolution more information
"Raw" Archives (as downloaded from original source)                  
E-OBS 660G IAC direct different versions, updated irregularly 1950 - present TG: mean temperature, TN: minimum temperature, TX: maximum temperature, RR: precipitation sum, PP: mean sea level pressure, FG: mean wind speed, HU: mean relative humidity, QQ: global radiation daily 0.1 and 0.25 https://www.ecad.eu/download/ensembles/download.php https://cds.climate.copernicus.eu/cdsapp#!/dataset/insitu-gridded-observations-europe?tab=overview
MERRA2 15T IAC direct updated 1980 - present many, temperature, precipitation, radiation, sea level pressure etc. hourly, sst monthly 0.5 lat x 0.625 lon (~50km) https://gmao.gsfc.nasa.gov/reanalysis/MERRA-2/ https://climatedataguide.ucar.edu/climate-data/nasas-merra2-reanalysis
ERAInterim 5T CSCS (2) direct static 1979-2019 W_SO_REL, T_SO, W_SNOW, FR_LAND, T_SKIN, T_SNOW, FIS, T, U, V, QV, PS, QC, QI, FR_SEA_ICE 6-hourly 0.7 x 0.7 (80 km) global
ERA5 50T CSCS (3) direct updated 1979 - present FIS, FR_LAND, FR_SEA_ICE, PS, QC, QI, QR, QS, QV, T, T_SKIN, T_SNOW, T_SO, U, V, W_SNOW, W_SO_REL hourly 0.28125 x 0.28125 (31 km) List of additional ERA-5 datasets
ERA5 17T IAC (4) direct updated 1940 - present 2t, tp, 10si, mn2t, mx2t monthly, hourly (variable dependent) 0.25 x 0.25 https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels-monthly-means?tab=overview, https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels?tab=overview, need to delete original data after processing because of size
ERA5-Land 40T IAC (5) direct updated 1950 - present 2t, snom hourly (variable dependent) 0.1 x 0.1 https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-land?tab=form, need to delete original data after processing because of size
CERRA 16T IAC (6) direct updated 1985 - present 2t, t, r, ... 3-hourly 5x5km sub-daily regional reanalysis data for Europe, https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-cerra-single-levels?tab=overview Wishlist: https://docs.google.com/document/d/1YtIabO5PMTsD_i_PqycmzIbrOYigNmuublt_i6FKrhY/edit#heading=h.brsa23yzcugp, download status: https://docs.google.com/spreadsheets/d/1xfM4TZCGXZm4M4VLQW3XPyAk6IX9vjlwj_p6ymX4aDU/edit#gid=0, space constraints prevent us from keeping all the 3-hourly data which have been processed into daily data, see sheet on download process
CERRA-Land 12T IAC (7) direct updated 1985 - present snom, sro, tp, ... 3-hourly 5x5km https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-cerra-land?tab=overview, Wishlist: https://docs.google.com/document/d/1YtIabO5PMTsD_i_PqycmzIbrOYigNmuublt_i6FKrhY/edit#heading=h.brsa23yzcugp, download status: https://docs.google.com/spreadsheets/d/1e58ps_yBmxUG0jvL8ZmNNr7Zz_UXuqIZsz4MdRAzvbM/edit#gid=0, space constraints prevent us from keeping all the 3-hourly data which have been processed into daily data, see sheet on download process

Processed Archives (e.g. aggregated or regridded)                  
E-OBS and MCH 50G IAC (8) direct static 1971-2020 tas, tasmax, tasmin, pr daily 0.11 E-OBS (v23.1e and v26.0e) data with higher resolution MCH data over Switzerland (prepared for CH2025)
MCH 7G IAC (9) direct static 1971-2021 tas, tasmax, tasmin, pr daily ~2km gridded observational data from MeteoSwiss over Switzerland
MERRA2 17G IAC (10) direct updated 1980-2015 (v0)
1980-2018 (v1)
tas, tasmax, tasmin, huss, psl, pr, hfss, hfls, rlus, rlds, rsds, rsus, tos daily, monthly 2.5 lat x 2.5 lon (same as cmip6-ng) files are consistent with cmip-ng archives, no time period is indicated in filenames
CERRA 6T IAC (11) direct updated 1985 - 2020 (v1) 2t, t, r, ... daily, monthly 5x5km sub-daily regional reanalysis data for Europe, https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-cerra-single-levels?tab=overview, https://docs.google.com/spreadsheets/d/1xfM4TZCGXZm4M4VLQW3XPyAk6IX9vjlwj_p6ymX4aDU/edit#gid=0
CERRA-Land 1.8T IAC (12) direct updated 1985 - 2020 (v1) snom, sro, tp, ... daily, monthly 5x5km https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-cerra-land?tab=overview, https://docs.google.com/spreadsheets/d/1e58ps_yBmxUG0jvL8ZmNNr7Zz_UXuqIZsz4MdRAzvbM/edit#gid=0
ERA5 500G IAC (13) direct updated 1940 - present 2t, tp, mx2t, mn2t daily, monthly 0.25 x 0.25 https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels?tab=overview
ERA5-Land 2.2T IAC (14) direct updated 1950 - present 2d, 2t, sd, snom daily, monthly 0.1 x 0.1 https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-land?tab=form

(1) May 2022

(2) /store/c2sm/c2sme/reanalyses_dkrz/ERAInterim

(3) /store/c2sm/c2sme/reanalyses_dkrz/ERA5

(4) /net/atmos/data/era5_cds/original

(5) /net/atmos/data/era5-land_cds/original

(6) /net/atmos/data/cerra/original

(7) /net/atmos/data/cerra-land/original

(8) /net/co2/c2sm-data/ch202X/Obs_Data/EOBS/0.1deg_reg_v23.1e/processed/, /net/co2/c2sm-data/ch202X/Obs_Data/EOBS/0.1deg_reg_v26.0e/processed/

(9) /net/co2/c2sm-data/ch202X/Obs_Data/MCH/processed/

(10) /net/co2/c2sm-data/rlorenz/MERRA2/

(11) /net/atmos/data/cerra/processed/v1/

(12) /net/atmos/data/cerra-land/processed/v1/

(13) /net/atmos/data/era5_cds/processed/v1/

(14) /net/atmos/data/era5-land_cds/processed/v1/

If you need more information or help with the usage of these datasets (or others), contact ruth.lorenz@c2sm.ethz.ch
If you need additional data in the raw archives, contact urs.beyerle@env.ethz.ch
If you need additional processed data, contact request@c2sm.ethz.ch
If you find errors and other issues in the processed datasets contact ruth.lorenz@c2sm.ethz.ch

Datasets Web Utilities

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