E-OBS indices access

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This is the download page for the indices derived from the E-OBS dataset. The datafiles below provide 30 climate indices (ETCCDI indices marked with *) for E-OBS v20.0e derived using daily minimum temperature (TN), daily maximum temperature (TX) and daily precipitation sum (RR). They cover the period 1951-01-01 - 2019-07-31. The data files are in compressed NetCDF-4 format, separated in three sets per index: annual, monthly and seasonal. Seasonal indices are calculated from the monthly indices, where for December-January-February (DJF) the December of the previous year is used: Dec(1951)-Jan(1952)-Feb(1952).

Terms of use

The ECA&D data policy applies. These observational data are strictly for use in non-commercial research and non-commercial education projects only. If you are unsure about the terms "commercial", "research", and "education", or you have any questions about the climate indices please contact the ECA&D staff at eca@knmi.nl for clarification.

Indices files

Click on an item to view the download links for those indices. More details can be found in the indices dictionary.

The best-estimate for the various indices is given as the median of the dataset based on the first 20 members of the E-OBS ensemble.

The spread in the ensemble, which is a measure of the statistical uncertainty associated with the gridding, is captured in the values for the 2.5 and 97.5 percentiles, also based on the first 20 members of the E-OBS ensemble. These percentile values are included as two variables per netcdf file. The user guidance gives more information on the choice of the first 20 ensemble members for the indices calculations.

No. of frost days (FD)* Maximum no of consecutive frost days (CFD)
Annual: median | uncertainty Annual: median | uncertainty
Half-yearly: median | uncertainty Half-yearly: median | uncertainty
Monthly: median | uncertainty Monthly: median | uncertainty
Seasonal: median | uncertainty Seasonal: median | uncertainty
Ice Days (ID)* Heating degree days (HD17*)
Annual: median | uncertainty Annual: median | uncertainty
Half-yearly: median | uncertainty Half-yearly: median | uncertainty
Monthly: median | uncertainty Monthly: median | uncertainty
Seasonal: median | uncertainty Seasonal: median | uncertainty
Cold Spell Duration Index (CSDI)* Alternative Cold Spell Duration Index (altCSDI)
Annual: median | uncertainty Annual:median | uncertainty
No. of cold nights (TN10p)* No. of cold day-times (TX10p)*
Annual: median | uncertainty Annual: median | uncertainty
Half-yearly: median | uncertainty Half-yearly: median | uncertainty
Monthly: median | uncertainty Monthly: median | uncertainty
Seasonal: median | uncertainty Seasonal: median | uncertainty
Minimum of daily minimum temperature (TNn)* Minimum of daily maximum temperature (TXn)*
Annual: median | uncertainty Annual: median | uncertainty
Half-yearly: median | uncertainty Half-yearlymedian | uncertainty
Monthly: median | uncertainty Monthly: median | uncertainty
Seasonal: median | uncertainty Seasonal: median | uncertainty
Growing season length (GSL)*
Annual: median | uncertainty
No. of summer days (SU)* No. of tropical nights (TR)*
Annual: median | uncertainty Annual: median | uncertainty
Half-yearly: median | uncertainty Half-yearly: median | uncertainty
Monthly: median | uncertainty Monthly: median | uncertainty
Seasonal: median | uncertainty Seasonal: median | uncertainty
Maximum of daily maximum temperature (TXx)* Maximum of daily minimum temperature (TNx)*
Annual: median | uncertainty Annual: median | uncertainty
Half-yearly: median | uncertainty Half-yearly: median | uncertainty
Monthly: median | uncertainty Monthly: median | uncertainty
Seasonal: median | uncertainty Seasonal: median | uncertainty
No. of warm nights (TN90p)* No. of warm day-times (TX90p)*
Annual: median | uncertainty Annual: median | uncertainty
Half-yearly: median | uncertainty Half-yearly: median | uncertainty
Monthly: median | uncertainty Monthly: median | uncertainty
Seasonal: median | uncertainty Seasonal: median | uncertainty
Warm Spell Duration Index (WSDI)* Alternative Warm Spell Duration Index (altWSDI)
Annual: median | uncertainty Annual: median | uncertainty
Consecutive summer days (CSU)
Annual: median | uncertainty
Half-yearly: median | uncertainty
Monthly: median | uncertainty
Seasonal: median | uncertainty
Median of diurnal temperature range (DTR)* Huglin Index (HI)
Annual: median | uncertainty Annual: median | uncertainty
Half-yearly: median | uncertainty
Monthly: median | uncertainty
Seasonal: median | uncertainty
Maximum no. of consecutive dry days (CDD)* Alternative Maximum no. of consecutive dry days (altCDD)
Annual: median | uncertainty Annual: median | uncertainty
3-month Standardized Precipitation Index (SPI3) 6-month Standardized Precipitation Index (SPI6)
Monthly: median | uncertainty Monthly: median | uncertainty
Highest 1-day precipitation amount (RX1day)* Highest 5-day precipitation amount (RX5day)*
Annual: median | uncertainty Annual: median | uncertainty
Half-yearly: median | uncertainty Half-yearly: median | uncertainty
Monthly: median | uncertainty Monthly: median | uncertainty
Seasonal: median | uncertainty Seasonal: median | uncertainty
Simple Daily Intensity Index (SDII)* No. of wet days (R1mm)*
Annual: median | uncertainty Annual: median | uncertainty
Half-yearly: median | uncertainty Half-yearly: median | uncertainty
Monthly: median | uncertainty Monthly: median | uncertainty
Seasonal: median | uncertainty Seasonal: median | uncertainty
Heavy precipitation days (R10mm)* Very heavy precipitation days (R20mm)*
Annual: median | uncertainty Annual: median | uncertainty
Half-yearly: median | uncertainty Half-yearly: median | uncertainty
Monthly: median | uncertainty Monthly: median | uncertainty
Seasonal: median | uncertainty Seasonal: median | uncertainty
Maximum no. of consecutive wet days (CWD)* Alternative Maximum no. of consecutive wet days (altCWD)
Annual: median | uncertainty Annual: median | uncertainty
Precipitation due to moderate wet days (R75pTOT) Fraction of precipitation due to moderate wet days (R75pFRAC)
Annual: median | uncertainty Annual: median | uncertainty
Half-yearly: median | uncertainty Half-yearly: median | uncertainty
Monthly: median | uncertainty Monthly: median| uncertainty
Seasonal: median | uncertainty Seasonal: median | uncertainty
Precipitation due to very wet days (R95pTOT)* Fraction of precipitation due to very wet days (R95pFRAC)
Annual: median | uncertainty Annual: median | uncertainty
Half-yearly: median | uncertainty Half-yearly: median | uncertainty
Monthly: median | uncertainty Monthly: median | uncertainty
Seasonal: median | uncertainty Seasonal: median | uncertainty
Precipitation due to extremely wet days (R99pTOT)* Fraction of precipitation due to extremely wet days (R99pFRAC)
Annual: median | uncertainty Annual: median | uncertainty
Half-yearly: median | uncertainty Half-yearly: median | uncertainty
Monthly: median | uncertainty Monthly: median | uncertainty
Seasonal: median | uncertainty Seasonal: median | uncertainty
Precipitation due to wet days (PRCPTOT)*
Annual: median | uncertainty
Half-yearly: median | uncertainty
Monthly: median | uncertainty
Seasonal: median | uncertainty

News

28 May 2020
E-OBS v21.0e released
26 May 2020
Monthly E-OBS update released
29 April 2020
22 April 2020
22 April 2020
Monthly E-OBS update released
31 March 2020
NGCD v20.03 released
30 March 2020
Monthly E-OBS update released
24 February 2020
24 February 2020
Monthly E-OBS update released
23 January 2020
21 January 2020
Monthly E-OBS update released
21 January 2020
19 December 2019
12 December 2019
Monthly E-OBS update released