Met Office Hadley Centre observations datasets
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HadEX3

HadEX3-ETSCI is distributed under the Open Government Licence. Any redistribution of this product should be accompanied by a similar statement of usage policy.

HadEX3-ETSCI is subject to Crown copyright protection.

NetCDF data files

The NetCDF data files are available using the 1981-2010 reference period and for those indices where a reference period is used as part of their construction, also as 1961-90 (to match HadEX, HadEX2 and the WMO climatology period for long-term assessments).

The current version is 3.0.4 (14 March 2024). For full details see the Changelog.

For auxillary data, see here.

IndexQuick DescriptionNetCDF file (1961-90)NetCDF file (1981-2010)NetCDF file (1961-90)NetCDF file (1981-2010)
HadEX2 format
Climdex Format
CDDcold18Cooling degree Days-.nc.gz-Annual.nc.gz Monthly.nc.gz
HDDcold18Heating degree Days-.nc.gz-Annual.nc.gz Monthly.nc.gz
GDDgrow10Growing degree Days-.nc.gz-Annual.nc.gz Monthly.nc.gz
WSDI3Warm Spell Duration index.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
CSDI3Cool Spell Duration index.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
TNlt2TN < 2C.nc.gz-Annual.nc.gz Monthly.nc.gz
TNltm2TN < -2C-.nc.gz-Annual.nc.gz Monthly.nc.gz
TNltm20TN < -20C-.nc.gz-Annual.nc.gz Monthly.nc.gz
TXge30TX > 30C-.nc.gz-Annual.nc.gz Monthly.nc.gz
TXge35TX > 35C-.nc.gz-Annual.nc.gz Monthly.nc.gz
TMge10TM >= 10C-.nc.gz-Annual.nc.gz Monthly.nc.gz
TMge5TM >= 5C-.nc.gz-Annual.nc.gz Monthly.nc.gz
TMlt5TM < 5C-.nc.gz-Annual.nc.gz Monthly.nc.gz
TMlt10TM < 10C-.nc.gz-Annual.nc.gz Monthly.nc.gz
TMmmean TM-.nc.gz-Annual.nc.gz Monthly.nc.gz
TNmmean TN-.nc.gz-Annual.nc.gz Monthly.nc.gz
TXmmean TX-.nc.gz-Annual.nc.gz Monthly.nc.gz
TX2TN22 consecutive days of TX and TN > 95th percentile.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
TXb2TNb22 consecutive days of TX and TN < 95th percentile.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
TXgt50pTX > 50th percentile.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
TX95tValue of 95th percentile of TX.nc.gz.nc.gzDaily.nc.gzDaily.nc.gz
HadEX2 format
Climdex Format
ECF_HWACold wave amplitude.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
ECF_HWDCold wave duration.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
ECF_HWFCold wave frequency.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
ECF_HWMCold wave magnitude.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
ECF_HWNCold wave number.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
EHF_HWAHeat wave amplitude.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
EHF_HWDHeat wave duration.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
EHF_HWFHeat wave frequency.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
EHF_HWMHeat wave magnitude.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
EHF_HWNHeat wave number.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
TN90_HWAHeat wave amplitude.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
TN90_HWDHeat wave duration.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
TN90_HWFHeat wave frequency.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
TN90_HWMHeat wave magnitude.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
TN90_HWNHeat wave number.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
TX90_HWAHeat wave amplitude.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
TX90_HWDHeat wave duration.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
TX90_HWFHeat wave frequency.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
TX90_HWMHeat wave magnitude.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
TX90_HWNHeat wave number.nc.gz.nc.gzAnnual.nc.gz Monthly.nc.gzAnnual.nc.gz Monthly.nc.gz
HadEX2 format
Climdex Format
Rx3daymaximum 3 day total-.nc.gz-Annual.nc.gz Monthly.nc.gz
24month_SPEI-.nc.gz-Monthly.nc.gz
12month_SPEI-.nc.gz-Monthly.nc.gz
6month_SPEI-.nc.gz-Monthly.nc.gz
3month_SPEI-.nc.gz-Monthly.nc.gz
24month_SPI-.nc.gz-Monthly.nc.gz
12month_SPI-.nc.gz-Monthly.nc.gz
6month_SPI-.nc.gz-Monthly.nc.gz
3month_SPEI-.nc.gz-Monthly.nc.gz
MD5 Checksum
HadEX2 format
Climdex Format
All61-90_hadex_format.txt81-10_hadex_format.txt61-90_climdex_format.txt81-10_climdex_format.txt

Plots

81-10 diagnostics 81-10 station locations 61-90 diagnostics 61-90 station locations

1981-2010 diagnostic plots

The .png files are the annual files. All annual (and monthly where available) are in the .zip files. These are for the 81-10 files.

IndexTimeseries (81-10)Trend Map (81-10)Coverage (81-10)Land Coverage (81-10)Latitude Coverage (81-10)
CDDcold18 .png.zip .png.zip .png.zip .png.zip .png.zip
HDDheat18 .png.zip .png.zip .png.zip .png.zip .png.zip
GDDgrow10 .png.zip .png.zip .png.zip .png.zip .png.zip
CSDI3 .png.zip .png.zip .png.zip .png.zip .png.zip
WSDI3 .png.zip .png.zip .png.zip .png.zip .png.zip
TNlt2 .png.zip .png.zip .png.zip .png.zip .png.zip
TNltm2 .png.zip .png.zip .png.zip .png.zip .png.zip
TNltm20 .png.zip .png.zip .png.zip .png.zip .png.zip
TXge30 .png.zip .png.zip .png.zip .png.zip .png.zip
TXge35 .png.zip .png.zip .png.zip .png.zip .png.zip
TMge10 .png.zip .png.zip .png.zip .png.zip .png.zip
TMge5 .png.zip .png.zip .png.zip .png.zip .png.zip
TMlt10 .png.zip .png.zip .png.zip .png.zip .png.zip
TMlt5 .png.zip .png.zip .png.zip .png.zip .png.zip
TMm .png.zip .png.zip .png.zip .png.zip .png.zip
TNm .png.zip .png.zip .png.zip .png.zip .png.zip
TXm .png.zip .png.zip .png.zip .png.zip .png.zip
TX2TN2 .png.zip .png.zip .png.zip .png.zip .png.zip
TXb2TNb2 .png.zip .png.zip .png.zip .png.zip .png.zip
TXgt50p .png.zip .png.zip .png.zip .png.zip .png.zip
TX95t - - - - -
IndexTimeseries (81-10)Trend Map (81-10)Coverage (81-10)Land Coverage (81-10)Latitude Coverage (81-10)
ECF_HWA .png.zip .png.zip .png.zip .png.zip .png.zip
ECF_HWD .png.zip .png.zip .png.zip .png.zip .png.zip
ECF_HWF .png.zip .png.zip .png.zip .png.zip .png.zip
ECF_HWM .png.zip .png.zip .png.zip .png.zip .png.zip
ECF_HWN .png.zip .png.zip .png.zip .png.zip .png.zip
EHF_HWA .png.zip .png.zip .png.zip .png.zip .png.zip
EHF_HWD .png.zip .png.zip .png.zip .png.zip .png.zip
EHF_HWF .png.zip .png.zip .png.zip .png.zip .png.zip
EHF_HWM .png.zip .png.zip .png.zip .png.zip .png.zip
EHF_HWN .png.zip .png.zip .png.zip .png.zip .png.zip
TN90_HWA .png.zip .png.zip .png.zip .png.zip .png.zip
TN90_HWD .png.zip .png.zip .png.zip .png.zip .png.zip
TN90_HWF .png.zip .png.zip .png.zip .png.zip .png.zip
TN90_HWM .png.zip .png.zip .png.zip .png.zip .png.zip
TN90_HWN .png.zip .png.zip .png.zip .png.zip .png.zip
TX90_HWA .png.zip .png.zip .png.zip .png.zip .png.zip
TX90_HWD .png.zip .png.zip .png.zip .png.zip .png.zip
TX90_HWF .png.zip .png.zip .png.zip .png.zip .png.zip
TX90_HWM .png.zip .png.zip .png.zip .png.zip .png.zip
TX90_HWN .png.zip .png.zip .png.zip .png.zip .png.zip
IndexTimeseries (81-10)Trend Map (81-10)Coverage (81-10)Land Coverage (81-10)Latitude Coverage (81-10)
Rx3day .png.zip .png.zip .png.zip .png.zip .png.zip
24month_SPEI .png.zip .png.zip .png.zip .png.zip .png.zip
12month_SPEI .png.zip .png.zip .png.zip .png.zip .png.zip
6month_SPEI .png.zip .png.zip .png.zip .png.zip .png.zip
3month_SPEI .png.zip .png.zip .png.zip .png.zip .png.zip
24month_SPI .png.zip .png.zip .png.zip .png.zip .png.zip
12month_SPI .png.zip .png.zip .png.zip .png.zip .png.zip
6month_SPI .png.zip .png.zip .png.zip .png.zip .png.zip
3month_SPI .png.zip .png.zip .png.zip .png.zip .png.zip

1981-2010 station locations

The .png files show all the stations used. The .zip archives contain plots for each year (annual version of the index only).

IndexStation Locations (81-10)Yearly Station Locations (81-10)
CDDcold18.png.zip
HDDheat18.png.zip
GDDgrow10.png.zip
CSDI3.png.zip
WSDI3.png.zip
TNlt2.png.zip
TNltm2.png.zip
TNltm20.png.zip
TXge30.png.zip
TXge35.png.zip
TMge10.png.zip
TMge5.png.zip
TMlt10.png.zip
TMlt5.png.zip
TMm.png.zip
TNm.png.zip
TXm.png.zip
TX2TN2.png.zip
TXb2TNb2.png.zip
TXgt50p.png.zip
TX95t.png-
ECF_HWA.png.zip
ECF_HWD.png.zip
ECF_HWF.png.zip
ECF_HWM.png.zip
ECF_HWN.png.zip
EHF_HWA.png.zip
EHF_HWD.png.zip
EHF_HWF.png.zip
EHF_HWM.png.zip
EHF_HWN.png.zip
TN90_HWA.png.zip
TN90_HWD.png.zip
TN90_HWF.png.zip
TN90_HWM.png.zip
TN90_HWN.png.zip
TX90_HWA.png.zip
TX90_HWD.png.zip
TX90_HWF.png.zip
TX90_HWM.png.zip
TX90_HWN.png.zip
Rx3day.png.zip
24month_SPEI.png.zip
12month_SPEI.png.zip
6month_SPEI.png.zip
3month_SPEI.png.zip
24month_SPI.png.zip
12month_SPI.png.zip
6month_SPI.png.zip
3month_SPI.png.zip

1961-90 diagnostic plots

The .png files are the annual files. All annual (and monthly where available) are in the .zip files. These are for the 61-90 files.

IndexTimeseries (61-90)Trend Map (61-90)Coverage (61-90)Land Coverage (61-90)Latitude Coverage (61-90)
CSDI3 .png.zip .png.zip .png.zip .png.zip .png.zip
WSDI3 .png.zip .png.zip .png.zip .png.zip .png.zip
TX2TN2 .png.zip .png.zip .png.zip .png.zip .png.zip
TXb2TNb2 .png.zip .png.zip .png.zip .png.zip .png.zip
TXgt50p .png.zip .png.zip .png.zip .png.zip .png.zip
TX95t-----
IndexTimeseries (61-90)Trend Map (61-90)Coverage (61-90)Land Coverage (61-90)Latitude Coverage (61-90)
ECF_HWA .png.zip .png.zip .png.zip .png.zip .png.zip
ECF_HWD .png.zip .png.zip .png.zip .png.zip .png.zip
ECF_HWF .png.zip .png.zip .png.zip .png.zip .png.zip
ECF_HWM .png.zip .png.zip .png.zip .png.zip .png.zip
ECF_HWN .png.zip .png.zip .png.zip .png.zip .png.zip
EHF_HWA .png.zip .png.zip .png.zip .png.zip .png.zip
EHF_HWD .png.zip .png.zip .png.zip .png.zip .png.zip
EHF_HWF .png.zip .png.zip .png.zip .png.zip .png.zip
EHF_HWM .png.zip .png.zip .png.zip .png.zip .png.zip
EHF_HWN .png.zip .png.zip .png.zip .png.zip .png.zip
TN90_HWA .png.zip .png.zip .png.zip .png.zip .png.zip
TN90_HWD .png.zip .png.zip .png.zip .png.zip .png.zip
TN90_HWF .png.zip .png.zip .png.zip .png.zip .png.zip
TN90_HWM .png.zip .png.zip .png.zip .png.zip .png.zip
TN90_HWN .png.zip .png.zip .png.zip .png.zip .png.zip
TX90_HWA .png.zip .png.zip .png.zip .png.zip .png.zip
TX90_HWD .png.zip .png.zip .png.zip .png.zip .png.zip
TX90_HWF .png.zip .png.zip .png.zip .png.zip .png.zip
TX90_HWM .png.zip .png.zip .png.zip .png.zip .png.zip
TX90_HWN .png.zip .png.zip .png.zip .png.zip .png.zip

1961-90 station locations

The .png files show all the stations used. The .zip archives contain plots for each year (annual version of the index only).

IndexStation Locations (61-90)Yearly Station Locations (61-90)
CSDI3.png.zip
WSDI3.png.zip
TX2TN2.png.zip
TXb2TNb2.png.zip
TXgt50p.png.zip
TX95t.png-
ECF_HWA.png.zip
ECF_HWD.png.zip
ECF_HWF.png.zip
ECF_HWM.png.zip
ECF_HWN.png.zip
EHF_HWA.png.zip
EHF_HWD.png.zip
EHF_HWF.png.zip
EHF_HWM.png.zip
EHF_HWN.png.zip
TN90_HWA.png.zip
TN90_HWD.png.zip
TN90_HWF.png.zip
TN90_HWM.png.zip
TN90_HWN.png.zip
TX90_HWA.png.zip
TX90_HWD.png.zip
TX90_HWF.png.zip
TX90_HWM.png.zip
TX90_HWN.png.zip


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