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HadISDH data download - version 4.3.1.2020f

The current version of HadISDH is 4.3.1.2020f. For previous versions please contact the dataset maintainers.

These data are available under a free and unrestricted Open Government Licence UK.

NetCDF gridded files contain fields on 5° by 5° resolution from -177.5° W/87.5° N to 177.5° E/-87.5° S.

NetCDF station files contain monthly time series from January 1973 to December 2020.

Missing data are represented by -1e30.

Variables are described below.

The ASCII good station list file contains a WMO identifier (digits 0-5 (a6)), a WBAN identifier (digits 6-10 (a5)), a latitude (digits 11-19 (f9.4)), a longitude (digits 20-29 (f10.4)), an elevation in metres (digits 29-35 (f7.1)), space, a country ID (digits 37-39 (a2)), space, and a name (digits 41-72 (a32)).

The ASCII list of stations with subzero and supersaturated issues contain a WMO identifier (digits 0-5 (a6)), a WBAN identifier (digits 6-10 (a5)), the total number of affected months (digits 28-30 (i3)) and the total number of non-missing months (digits 32-34 (i3)).

The ASCII version of the gridded data lists each month in turn with 72 columns of longitude (-177.5 to 177.5 grid cell centres) and 36 rows of latitude (-87.5 to 87.5 grid cell centres). The longitudes and latitudes are listed at file end.

Product Description Data file
HadISDH.land*.4.3.1.2020f grids NetCDF Land surface grids and uncertainty HadISDH.landq.4.3.1.2020f_FLATgridHOM5by5_anoms8110.nc, HadISDH.landRH.4.3.1.2020f_FLATgridHOM5by5_anoms8110.nc, HadISDH.lande.4.3.1.2020f_FLATgridHOM5by5_anoms8110.nc, HadISDH.landTd.4.3.1.2020f_FLATgridHOM5by5_anoms8110.nc, HadISDH.landTw.4.3.1.2020f_FLATgridHOM5by5_anoms8110.nc, HadISDH.landT.4.3.1.2020f_FLATgridHOM5by5_anoms8110.nc, HadISDH.landDPD.4.3.1.2020f_FLATgridHOM5by5_anoms8110.nc,
HadISDH.land*.4.3.1.2020f grids ASCII Land surface anomalies relative to 1981-2010 HadISDH.landq.4.3.1.2020f_FLATgridHOM5by5_anoms8110_anomalies.dat, HadISDH.landRH.4.3.1.2020f_FLATgridHOM5by5_anoms8110_anomalies.dat, HadISDH.lande.4.3.1.2020f_FLATgridHOM5by5_anoms8110_anomalies.dat, HadISDH.landTd.4.3.1.2020f_FLATgridHOM5by5_anoms8110_anomalies.dat, HadISDH.landTw.4.3.1.2020f_FLATgridHOM5by5_anoms8110_anomalies.dat, HadISDH.landT.4.3.1.2020f_FLATgridHOM5by5_anoms8110_anomalies.dat, HadISDH.landDPD.4.3.1.2020f_FLATgridHOM5by5_anoms8110_anomalies.dat,
HadISDH.land*.4.3.1.2020f grids ASCII Land surface actual values HadISDH.landq.4.3.1.2020f_FLATgridHOM5by5_anoms8110_actuals.dat, HadISDH.landRH.4.3.1.2020f_FLATgridHOM5by5_anoms8110_actuals.dat, HadISDH.lande.4.3.1.2020f_FLATgridHOM5by5_anoms8110_actuals.dat, HadISDH.landTd.4.3.1.2020f_FLATgridHOM5by5_anoms8110_actuals.dat, HadISDH.landTw.4.3.1.2020f_FLATgridHOM5by5_anoms8110_actuals.dat, HadISDH.landT.4.3.1.2020f_FLATgridHOM5by5_anoms8110_actuals.dat, HadISDH.landDPD.4.3.1.2020f_FLATgridHOM5by5_anoms8110_actuals.dat,
HadISDH.land*.4.3.1.2020f grids ASCII Land surface uncertainty (2 sigma) including station (measurement, inhomogeneity and climatology) and grid-box sampling HadISDH.landq.4.3.1.2020f_FLATgridHOM5by5_anoms8110_2sig_uncertainty.dat, HadISDH.landRH.4.3.1.2020f_FLATgridHOM5by5_anoms8110_2sig_uncertainty.dat, HadISDH.lande.4.3.1.2020f_FLATgridHOM5by5_anoms8110_2sig_uncertainty.dat, HadISDH.landTd.4.3.1.2020f_FLATgridHOM5by5_anoms8110_2sig_uncertainty.dat, HadISDH.landTw.4.3.1.2020f_FLATgridHOM5by5_anoms8110_2sig_uncertainty.dat, HadISDH.landT.4.3.1.2020f_FLATgridHOM5by5_anoms8110_2sig_uncertainty.dat, HadISDH.landDPD.4.3.1.2020f_FLATgridHOM5by5_anoms8110_2sig_uncertainty.dat,
HadISDH.land*.4.3.1.2020f stations NetCDF Land surface stations and uncertainty tarball (tar -xzf to unpack) HadISDH.landq.4.3.1.2020f.stations,
HadISDH.landRH.4.3.1.2020f.stations,
HadISDH.lande.4.3.1.2020f.stations,
HadISDH.landTd.4.3.1.2020f.stations,
HadISDH.landTw.4.3.1.2020f.stations,
HadISDH.landT.4.3.1.2020f.stations,
HadISDH.landDPD.4.3.1.2020f.stations
HadISDH.land*.4.3.1.2020f good station list ASCII Stations by WMO identifier, latitude, longitude and elevation PosthomogIDPHAq_anoms8110_goodsHadISDH.4.3.1.2020f.txt,
PosthomogIDPHArh_anoms8110_goodsHadISDH.4.3.1.2020f.txt,
PosthomogIDPHAe_anoms8110_goodsHadISDH.4.3.1.2020f.txt,
PosthomogPHADPDtd_anoms8110_goodsHadISDH.4.3.1.2020f.txt,
PosthomogIDPHAtw_anoms8110_goodsHadISDH.4.3.1.2020f.txt,
PosthomogIDPHAt_anoms8110_goodsHadISDH.4.3.1.2020f.txt,
PosthomogPHAdpd_anoms8110_goodsHadISDH.4.3.1.2020f.txt
HadISDH.land*.4.3.1.2020f sub-zero values station list ASCII Stations by WMO identifier, latitude, longitude and elevation PosthomogIDPHAq_anoms8110_subzerosHadISDH.4.3.1.2020f.txt,
PosthomogIDPHAe_anoms8110_subzerosHadISDH.4.3.1.2020f.txt
HadISDH.land*.4.3.1.2020f supersaturated values station list ASCII Stations by WMO identifier, latitude, longitude and elevation PosthomogIDPHAq_anoms8110_satsHadISDH.4.3.1.2020f.txt,
PosthomogIDPHArh_anoms8110_satsHadISDH.4.3.1.2020f.txt,
PosthomogIDPHAe_anoms8110_satsHadISDH.4.3.1.2020f.txt,
PosthomogPHADPDtd_anoms8110_satsHadISDH.4.3.1.2020f.txt,
PosthomogIDPHAtw_anoms8110_satsHadISDH.4.3.1.2020f.txt,
PosthomogPHAdpd_anoms8110_satsHadISDH.4.3.1.2020f.txt


NetCDF gridded file field Description Dimensions       
q_abs,
rh_abs,
e_abs,
td_abs,
tw_abs,
t_abs,
dpd_abs
Monthly mean values 72 by 36 by 572
q_anoms,
rh_anoms,
e_anoms,
td_anoms,
tw_anoms,
t_anoms,
dpd_anoms
Monthly mean climate anomaly from the 1981-2010 climatology period (only climatological mean subtracted, not standardised) 72 by 36 by 572
q_std,
rh_std,
e_std,
td_std,
tw_std,
t_std,
dpd_std
Standard deviation of all station monthly mean anomalies within the gridbox for each month 72 by 36 by 572
q_combinederr,
rh_combinederr,
e_combinederr,
td_combinederr,
tw_combinederr,
t_combinederr,
dpd_combinederr
Station uncertainty and sampling uncertainty combined in quadrature to give a 2σ uncertainty 72 by 36 by 572
q_samplingerr,
rh_samplingerr,
e_samplingerr,
td_samplingerr,
tw_samplingerr,
t_samplingerr,
dpd_samplingerr
2σ Spatio-temporal sampling uncertainty within the gridbox 72 by 36 by 572
q_rbar,
rh_rbar,
e_rbar,
td_rbar,
tw_rbar,
t_rbar,
dpd_rbar
Average inter-site correlation 72 by 36
q_sbarSQ,
rh_sbarSQ,
e_sbarSQ,
td_sbarSQ,
tw_sbarSQ,
t_sbarSQ,
dpd_sbarSQ
Estimate of the mean variance of individual stations in the gridbox 72 by 36
q_stationerr,
rh_stationerr,
e_stationerr,
td_stationerr,
tw_stationerr,
t_stationerr,
dpd_stationerr
Climatological, measurement and adjustment uncertainty combined in quadrature to give a 2σ station uncertainty 72 by 36 by 572
q_adjerr,
rh_adjerr,
e_adjerr,
td_adjerr,
tw_adjerr,
t_adjerr,
dpd_adjerr
2σ adjustment uncertainty for inhomogeneity in the data 72 by 36 by 572
q_obserr,
rh_obserr,
e_obserr,
td_obserr,
tw_obserr,
t_obserr,
dpd_obserr
2σ measurement uncertainty 72 by 36 by 572
q_climerr,
rh_climerr,
e_climerr,
td_climerr,
tw_climerr,
t_climerr,
dpd_climerr
2σ climatological uncertainty 72 by 36 by 572
q_clims,
rh_clims,
e_clims,
td_clims,
tw_clims,
t_clims,
dpd_clims
Monthly climatologies over the 1981-2010 period 72 by 36 by 12
mean_n_stations Total number of stations within the gridbox over entire record 72 by 36
actual_n_stations Actual number of stations within the gridbox for each time step 72 by 36 by 572
latitude Latitude in 5° 72 by 36
longitude Longitude in 5° 72 by 36
time Gregorian: Days since 1st January 1973 00:00:00 572
months 1-12 12


NetCDF station file field Description Dimensions
*_abs Monthly mean value 572
*_anoms Monthly mean anomaly from the 1981-2010 climatology period (climate anomaly, not standardised) 572
*_stds Standard deviation of all station monthly mean anomalies within the gridbox for each month 572
*_uncertainty Climatological, measurement and adjustment uncertainty combined in quadrature to give a 2σ station uncertainty 572
*_adjerr 2σ adjustment uncertainty 572
*_obserr 2σ measurement uncertainty 572
*_climerr 2σ climatological uncertainty 572
*_clims Monthly climatologies over the 1981-2010 period 12
times Months since January 1973 572
months 1-12 12



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