cdo eca_hwfi wrong result for cdo-1.9.10 (correct result for cdo-1.9.9)

If I calculate the HWFI as illustrated below, the result forthe "warm spell days index wrt 90th percentile of reference period" is different depending on the cdo version I use.
Using cdo 1.9.10 gives a unrealisticly high count of heatwave days (more than 1000 per year for some gridcells) and using the older version cdo 1.9.9 gives a realistic result (well below 365 per year). The result for the warm spell periods per time period are the same in both cdo versions.

cdo eca_hwfi,6 HIPPO_n22_tsurf_1961.nc temp_n22_runpctl_tsurf_1961.nc HW_HIPPO_n22_tsurf_1961.nc

Thanks for your help!

Cheers,

Laura

Download all files

temp_n22_runpctl_tsurf_1961.nc (25.7 MB) temp_n22_runpctl_tsurf_1961.nc	90th percentile threshold
HIPPO_n22_tsurf_1961.nc (25.7 MB) HIPPO_n22_tsurf_1961.nc	Daily mean Temperature

Replies (1)

RE: cdo eca_hwfi wrong result for cdo-1.9.10 (correct result for cdo-1.9.9) - Added by Fabian Wachsmann over 2 years ago

Dear Laura,

thanks for raising this issue.
I introduced a keyvalue argument with 1.9.10 named "freq" which can be "year" or "month". Unfortunately, I added two bugs to the code while trying to make it compatible with older versions.

I debugged this and it will be made available in a new release.

Best,
Fabi

(1-1/1)

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