Discontinuities found in ISIMIP3b bias-adjusted climate input data #1
issue
Jochen Klar reported on March 2, 2021.
Statistics of ISIMIP3b bias-adjusted climate input data were found to be discontinuous at each turn of the month. The reason for this is that the ISIMIP3 bias adjustment was applied calendar month by calendar month.
In short, all values belonging to a particular month were pooled and then quantile-mapped such that the distribution of those pooled values became more similar to the observed distribution. Where simulated and observed annual cycles differ in shape, this approach produced discontinuous annual cycles.
The discontinuities potentially occur at every turn of the month for all climate variables and statistics.
As an example, see the downloads or the figure below. There we show the 2001-2010 multi-year daily mean values of several climate variables averaged over all land (left-side figure) or ocean (right-side figure) grid cells, with results before and after bias adjustment shown in the left and right column, respectively.
Additional plots valid for regions after Giorgi and Bi (2005) are available under these links:
annual cycles: https://www.isimip.org/files/plots/inputdata/ISIMIP3BASDv2.4.1/annual_cycle/png_united/
annual means: https://www.isimip.org/files/plots/inputdata/ISIMIP3BASDv2.4.1/annual_means/png_united/
In short, all values belonging to a particular month were pooled and then quantile-mapped such that the distribution of those pooled values became more similar to the observed distribution. Where simulated and observed annual cycles differ in shape, this approach produced discontinuous annual cycles.
The discontinuities potentially occur at every turn of the month for all climate variables and statistics.
As an example, see the downloads or the figure below. There we show the 2001-2010 multi-year daily mean values of several climate variables averaged over all land (left-side figure) or ocean (right-side figure) grid cells, with results before and after bias adjustment shown in the left and right column, respectively.
Additional plots valid for regions after Giorgi and Bi (2005) are available under these links:
annual cycles: https://www.isimip.org/files/plots/inputdata/ISIMIP3BASDv2.4.1/annual_cycle/png_united/
annual means: https://www.isimip.org/files/plots/inputdata/ISIMIP3BASDv2.4.1/annual_means/png_united/
Matthias Büchner commented on May 7, 2021.
First plots of two climate input models bias-adjusted with the new ISIMIP3BASD version 2.5.0 look promising. The plots linked below suggest that our approach for fixing the discontinuities is working as expected.
annual cycles: https://www.isimip.org/files/plots/inputdata/ISIMIP3BASDv2.5.0/annual_cycle/png_united/
annual means: https://www.isimip.org/files/plots/inputdata/ISIMIP3BASDv2.5.0/annual_means/png_united/
annual cycles: https://www.isimip.org/files/plots/inputdata/ISIMIP3BASDv2.5.0/annual_cycle/png_united/
annual means: https://www.isimip.org/files/plots/inputdata/ISIMIP3BASDv2.5.0/annual_means/png_united/
Matthias Büchner commented on March 31, 2021.
Updates are expected to become available in May 2021. Stay tuned.
Details
Please use the replaced datasets for new simulations or research.
Severity high
Status resolved
- Versions
- before 20210101
- Region
- Global
- Data product
- Input Data
- Input category
- Climate related forcing
- Input subcategory
- Atmospheric forcings
- Bias adjustment
- w5e5
- Climate forcing
- GFDL-ESM4, IPSL-CM6A-LR, MPI-ESM1-2-HR, MRI-ESM2-0, UKESM1-0-LL
- Climate experiment
- historical, picontrol, ssp126, ssp370, ssp585
- Climate variable
- hurs, huss, pr, prsn, ps, rlds, rsds, sfcwind, tas, tasmax, tasmin
- Simulation round
- ISIMIP3b
Downloads
Affected datasets
There are 275 datasets affected by this issue. Here we only display the first 100 datasets. You can download a complete list of all the datasets, or files affected by this issue as JSON. Alternatively, can also download a list the files as a flat file suitable for Wget. You can use the search interface to further restrict your query.
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39.0 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_historical_hurs_global_daily
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41.5 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_historical_huss_global_daily
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33.0 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_historical_pr_global_daily
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12.8 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_historical_prsn_global_daily
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32.8 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_historical_ps_global_daily
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38.1 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_historical_rlds_global_daily
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38.9 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_historical_rsds_global_daily
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43.7 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_historical_sfcwind_global_daily
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32.2 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_historical_tas_global_daily
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32.4 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_historical_tasmax_global_daily
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32.6 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_historical_tasmin_global_daily
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39.3 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_historical_hurs_global_daily
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41.9 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_historical_huss_global_daily
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33.6 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_historical_pr_global_daily
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13.7 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_historical_prsn_global_daily
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32.9 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_historical_ps_global_daily
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38.4 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_historical_rlds_global_daily
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39.3 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_historical_rsds_global_daily
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44.0 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_historical_sfcwind_global_daily
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32.4 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_historical_tas_global_daily
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32.6 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_historical_tasmax_global_daily
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32.8 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_historical_tasmin_global_daily
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39.2 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_historical_hurs_global_daily
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41.7 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_historical_huss_global_daily
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33.4 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_historical_pr_global_daily
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12.9 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_historical_prsn_global_daily
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32.8 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_historical_ps_global_daily
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38.6 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_historical_rlds_global_daily
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39.1 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_historical_rsds_global_daily
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43.7 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_historical_sfcwind_global_daily
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32.3 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_historical_tas_global_daily
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32.5 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_historical_tasmax_global_daily
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32.7 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_historical_tasmin_global_daily
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39.0 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_historical_hurs_global_daily
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41.5 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_historical_huss_global_daily
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32.7 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_historical_pr_global_daily
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12.8 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_historical_prsn_global_daily
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32.8 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_historical_ps_global_daily
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38.0 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_historical_rlds_global_daily
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38.7 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_historical_rsds_global_daily
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43.6 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_historical_sfcwind_global_daily
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32.1 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_historical_tas_global_daily
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32.4 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_historical_tasmax_global_daily
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32.5 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_historical_tasmin_global_daily
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39.2 GB ISIMIP3b InputData climate ukesm1-0-ll Archived 20200630ukesm1-0-ll_r1i1p1f2_w5e5_historical_hurs_global_daily
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41.8 GB ISIMIP3b InputData climate ukesm1-0-ll Archived 20200630ukesm1-0-ll_r1i1p1f2_w5e5_historical_huss_global_daily
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33.5 GB ISIMIP3b InputData climate ukesm1-0-ll Archived 20200630ukesm1-0-ll_r1i1p1f2_w5e5_historical_pr_global_daily
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13.8 GB ISIMIP3b InputData climate ukesm1-0-ll Archived 20200630ukesm1-0-ll_r1i1p1f2_w5e5_historical_prsn_global_daily
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32.9 GB ISIMIP3b InputData climate ukesm1-0-ll Archived 20200630ukesm1-0-ll_r1i1p1f2_w5e5_historical_ps_global_daily
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38.3 GB ISIMIP3b InputData climate ukesm1-0-ll Archived 20200630ukesm1-0-ll_r1i1p1f2_w5e5_historical_rlds_global_daily
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39.2 GB ISIMIP3b InputData climate ukesm1-0-ll Archived 20200630ukesm1-0-ll_r1i1p1f2_w5e5_historical_rsds_global_daily
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43.9 GB ISIMIP3b InputData climate ukesm1-0-ll Archived 20200630ukesm1-0-ll_r1i1p1f2_w5e5_historical_sfcwind_global_daily
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32.3 GB ISIMIP3b InputData climate ukesm1-0-ll Archived 20200630ukesm1-0-ll_r1i1p1f2_w5e5_historical_tas_global_daily
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32.5 GB ISIMIP3b InputData climate ukesm1-0-ll Archived 20200630ukesm1-0-ll_r1i1p1f2_w5e5_historical_tasmax_global_daily
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32.7 GB ISIMIP3b InputData climate ukesm1-0-ll Archived 20200630ukesm1-0-ll_r1i1p1f2_w5e5_historical_tasmin_global_daily
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118.2 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_picontrol_hurs_global_daily
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125.9 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_picontrol_huss_global_daily
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100.2 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_picontrol_pr_global_daily
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39.1 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_picontrol_prsn_global_daily
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99.5 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_picontrol_ps_global_daily
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115.7 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_picontrol_rlds_global_daily
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117.7 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_picontrol_rsds_global_daily
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132.5 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_picontrol_sfcwind_global_daily
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97.5 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_picontrol_tas_global_daily
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98.1 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_picontrol_tasmax_global_daily
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98.7 GB ISIMIP3b InputData climate gfdl-esm4 Archived 20200630gfdl-esm4_r1i1p1f1_w5e5_picontrol_tasmin_global_daily
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119.0 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_picontrol_hurs_global_daily
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127.1 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_picontrol_huss_global_daily
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101.7 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_picontrol_pr_global_daily
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42.3 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_picontrol_prsn_global_daily
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99.8 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_picontrol_ps_global_daily
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116.4 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_picontrol_rlds_global_daily
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119.1 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_picontrol_rsds_global_daily
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133.2 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_picontrol_sfcwind_global_daily
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98.1 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_picontrol_tas_global_daily
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98.9 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_picontrol_tasmax_global_daily
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99.5 GB ISIMIP3b InputData climate ipsl-cm6a-lr Archived 20200630ipsl-cm6a-lr_r1i1p1f1_w5e5_picontrol_tasmin_global_daily
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118.9 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_picontrol_hurs_global_daily
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126.4 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_picontrol_huss_global_daily
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101.3 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_picontrol_pr_global_daily
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39.4 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_picontrol_prsn_global_daily
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99.4 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_picontrol_ps_global_daily
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117.0 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_picontrol_rlds_global_daily
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118.4 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_picontrol_rsds_global_daily
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132.5 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_picontrol_sfcwind_global_daily
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97.9 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_picontrol_tas_global_daily
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98.5 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_picontrol_tasmax_global_daily
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99.1 GB ISIMIP3b InputData climate mpi-esm1-2-hr Archived 20200630mpi-esm1-2-hr_r1i1p1f1_w5e5_picontrol_tasmin_global_daily
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118.3 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_picontrol_hurs_global_daily
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125.9 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_picontrol_huss_global_daily
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99.3 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_picontrol_pr_global_daily
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39.0 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_picontrol_prsn_global_daily
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99.3 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_picontrol_ps_global_daily
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115.4 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_picontrol_rlds_global_daily
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117.3 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_picontrol_rsds_global_daily
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132.1 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_picontrol_sfcwind_global_daily
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97.3 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_picontrol_tas_global_daily
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98.1 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_picontrol_tasmax_global_daily
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98.4 GB ISIMIP3b InputData climate mri-esm2-0 Archived 20200630mri-esm2-0_r1i1p1f1_w5e5_picontrol_tasmin_global_daily
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118.8 GB ISIMIP3b InputData climate ukesm1-0-ll Archived 20200630ukesm1-0-ll_r1i1p1f2_w5e5_picontrol_hurs_global_daily