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HadISDH data download - version 4.2.0.2019f

The current version of HadISDH is 4.2.0.2019f. 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 2019.

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 Number of Stations Included           Period of record           Size (MB)
HadISDH.land*.4.2.0.2019f grids NetCDF Land surface grids and uncertainty HadISDH.landq.4.2.0.2019f_FLATgridIDPHA5by5_anoms8110_JAN2020_cf.nc, HadISDH.landRH.4.2.0.2019f_FLATgridIDPHA5by5_anoms8110_JAN2020_cf.nc, HadISDH.lande.4.2.0.2019f_FLATgridIDPHA5by5_anoms8110_JAN2020_cf.nc, HadISDH.landTd.4.2.0.2019f_FLATgridPHADPD5by5_anoms8110_JAN2020_cf.nc, HadISDH.landTw.4.2.0.2019f_FLATgridIDPHA5by5_anoms8110_JAN2020_cf.nc, HadISDH.landT.4.2.0.2019f_FLATgridIDPHA5by5_anoms8110_JAN2020_cf.nc, HadISDH.landDPD.4.2.0.2019f_FLATgridPHA5by5_anoms8110_JAN2020_cf.nc, 4332,
4333,
4332,
3693,
3430,
4282,
3868
Jan 1973 to Dec 2019 56M,
56M,
56M,
56M,
56M,
56M,
56M
HadISDH.land*.4.2.0.2019f grids ASCII Land surface anomalies relative to 1981-2010 HadISDH.landq.4.2.0.2019f_FLATgridIDPHA5by5_anoms8110_anomalies_JAN2020.dat, HadISDH.landRH.4.2.0.2019f_FLATgridIDPHA5by5_anoms8110_anomalies_JAN2020.dat, HadISDH.lande.4.2.0.2019f_FLATgridIDPHA5by5_anoms8110_anomalies_JAN2020.dat, HadISDH.landTd.4.2.0.2019f_FLATgridPHADPD5by5_anoms8110_anomalies_JAN2020.dat, HadISDH.landTw.4.2.0.2019f_FLATgridIDPHA5by5_anoms8110_anomalies_JAN2020.dat, HadISDH.landT.4.2.0.2019f_FLATgridIDPHA5by5_anoms8110_anomalies_JAN2020.dat, HadISDH.landDPD.4.2.0.2019f_FLATgridPHA5by5_anoms8110_anomalies_JAN2020.dat, 4332,
4333,
4332,
3693,
3430,
4282,
3868
Jan 1973 to Dec 2019 13M,
13M,
13M,
13M,
13M,
13M,
13M
HadISDH.land*.4.2.0.2019f grids ASCII Land surface actual values HadISDH.landq.4.2.0.2019f_FLATgridIDPHA5by5_anoms8110_actuals_JAN2020.dat, HadISDH.landRH.4.2.0.2019f_FLATgridIDPHA5by5_anoms8110_actuals_JAN2020.dat, HadISDH.lande.4.2.0.2019f_FLATgridIDPHA5by5_anoms8110_actuals_JAN2020.dat, HadISDH.landTd.4.2.0.2019f_FLATgridPHADPD5by5_anoms8110_actuals_JAN2020.dat, HadISDH.landTw.4.2.0.2019f_FLATgridIDPHA5by5_anoms8110_actuals_JAN2020.dat, HadISDH.landT.4.2.0.2019f_FLATgridIDPHA5by5_anoms8110_actuals_JAN2020.dat, HadISDH.landDPD.4.2.0.2019f_FLATgridPHA5by5_anoms8110_actuals_JAN2020.dat, 4332,
4333,
4332,
3693,
3430,
4282,
3868
Jan 1973 to Dec 2019 13M,
13M,
13M,
13M,
13M,
13M,
13M
HadISDH.land*.4.2.0.2019f grids ASCII Land surface uncertainty (2 sigma) including station (measurement, inhomogeneity and climatology) and grid-box sampling HadISDH.landq.4.2.0.2019f_FLATgridIDPHA5by5_anoms8110_uncertainty_JAN2020.dat, HadISDH.landRH.4.2.0.2019f_FLATgridIDPHA5by5_anoms8110_uncertainty_JAN2020.dat, HadISDH.lande.4.2.0.2019f_FLATgridIDPHA5by5_anoms8110_uncertainty_JAN2020.dat, HadISDH.landTd.4.2.0.2019f_FLATgridPHADPD5by5_anoms8110_uncertainty_JAN2020.dat, HadISDH.landTw.4.2.0.2019f_FLATgridIDPHA5by5_anoms8110_uncertainty_JAN2020.dat, HadISDH.landT.4.2.0.2019f_FLATgridIDPHA5by5_anoms8110_uncertainty_JAN2020.dat, HadISDH.landDPD.4.2.0.2019f_FLATgridPHA5by5_anoms8110_uncertainty_JAN2020.dat, 4332,
4333,
4332,
3693,
3430,
4282,
3868
Jan 1973 to Dec 2019 13M,
13M,
13M,
13M,
13M,
13M,
13M
HadISDH.land*.4.2.0.2019f stations NetCDF Land surface stations and uncertainty tarball (tar -xzf to unpack) HadISDH.landq.4.2.0.2019f.stations,
HadISDH.landRH.4.2.0.2019f.stations,
HadISDH.lande.4.2.0.2019f.stations,
HadISDH.landTd.4.2.0.2019f.stations,
HadISDH.landTw.4.2.0.2019f.stations,
HadISDH.landT.4.2.0.2019f.stations,
HadISDH.landDPD.4.2.0.2019f.stations
4401,
4398,
4401,
3921,
4403,
4282,
4092
Jan 1973 to Dec 2019 30M,
18M,
30M,
24M,
17M,
16M,
25M
HadISDH.land*.4.2.0.2019f good station list ASCII Stations by WMO identifier, latitude, longitude and elevation PosthomogIDPHAq_anoms8110_goodsHadISDH.4.2.0.2019f_JAN2020.txt,
PosthomogIDPHArh_anoms8110_goodsHadISDH.4.2.0.2019f_JAN2020.txt,
PosthomogIDPHAe_anoms8110_goodsHadISDH.4.2.0.2019f_JAN2020.txt,
PosthomogPHADPDtd_anoms8110_goodsHadISDH.4.2.0.2019f_JAN2020.txt,
PosthomogIDPHAtw_anoms8110_goodsHadISDH.4.2.0.2019f_JAN2020.txt,
PosthomogIDPHAt_anoms8110_goodsHadISDH.4.2.0.2019f_JAN2020.txt,
PosthomogPHAdpd_anoms8110_goodsHadISDH.4.2.0.2019f_JAN2020.txt
4401,
4398,
4401,
3921,
4403,
4282,
4092
Jan 1973 to Dec 2019 340K,
340K,
340K,
303K,
340K,
331K,
316K
HadISDH.land*.4.2.0.2019f sub-zero values station list ASCII Stations by WMO identifier, latitude, longitude and elevation PosthomogIDPHAq_anoms8110_subzerosHadISDH.4.2.0.2019f_JAN2020.txt,
PosthomogIDPHAe_anoms8110_subzerosHadISDH.4.2.0.2019f_JAN2020.txt
44,
44
Jan 1973 to Dec 2019 1.6K,
1.6K
HadISDH.land*.4.2.0.2019f supersaturated values station list ASCII Stations by WMO identifier, latitude, longitude and elevation PosthomogIDPHAq_anoms8110_satsHadISDH.4.2.0.2019f_JAN2020.txt,
PosthomogIDPHArh_anoms8110_satsHadISDH.4.2.0.2019f_JAN2020.txt,
PosthomogIDPHAe_anoms8110_satsHadISDH.4.2.0.2019f_JAN2020.txt,
PosthomogPHADPDtd_anoms8110_satsHadISDH.4.2.0.2019f_JAN2020.txt,
PosthomogIDPHAtw_anoms8110_satsHadISDH.4.2.0.2019f_JAN2020.txt,
PosthomogPHAdpd_anoms8110_satsHadISDH.4.2.0.2019f_JAN2020.txt
65,
65,
65,
220,
973,
224
Jan 1973 to Dec 2019 2.6K,
2.6K,
2.6K,
7.8K,
34K,
7.9K


NetCDF gridded file field Description Dimensions        Max and Min values               
q_abs,
rh_abs,
e_abs,
td_abs,
tw_abs,
t_abs,
dpd_abs
Monthly mean values 72 by 36 by 564 0.00 to 23.53 g kg-1,
6.24 to 99.61 %rh,
0.00 to 37.29 hPa,
-53.25 to 27.64 °C,
-45.43 to 29.20 °C,
-53.73 to 40.48 °C,
0.00 to 44.45 °C
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 564 -6.66 to 6.31 g kg-1,
-53.30 to 41.07 %rh,
-10.09 to 9.59 hPa,
-21.14 to 17.37 °C,
-20.80 to 18.48 °C,
-22.11 to 17.30 °C,
-14.98 to 14.20 °C
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 564 0.00 to 11.70 (100) g kg-1,
0.00 to 44.93 (100) %rh,
0.00 to 19.39 (100) hPa,
0.00 to 24.35 (100) °C,
0.00 to 21.57 (100) °C,
0.00 to 22.90 (100) °C,
0.00 to 22.35 (100) °C
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 564 0.01 to 0.90 g kg-1,
0.07 to 20.39 %rh,
0.01 to 1.57 hPa,
0.02 to 2.07 °C,
0.02 to 1.72 °C,
0.02 to 1.93 °C,
0.01 to 2.28 °C
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 564 0.00 to 0.80 g kg-1,
0.03 to 39.98 %rh,
0.00 to 1.89 hPa,
0.01 to 3.57 °C,
0.00 to 3.07 °C,
0.01 to 3.42 °C,
0.00 to 3.92 °C
q_rbar,
rh_rbar,
e_rbar,
td_rbar,
tw_rbar,
t_rbar,
dpd_rbar
Average inter-site correlation 72 by 36 0.69 to 0.90-1,
0.69 to 0.89,
0.69 to 0.90,
0.69 to 0.90,
0.69 to 0.90,
0.69 to 0.92,
0.59 to 0.89
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 0.03 to 10.00 g kg-1,
1.65 to 104.34 %rh,
0.08 to 10.00 hPa,
0.09 to 15.31 °C,
0.08 to 12.52 °C,
0.07 to 14.63 °C,
0.08 to 13.92 °C
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 564 0.01 to 1.74 g kg-1,
0.12 to 11.30 %rh,
0.02 to 2.66 hPa,
0.03 to 2.80 °C,
0.02 to 1.93 °C,
0.02 to 2.07 °C,
0.02 to 2.32 °C
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 564 0.02 to 1.74 g kg-1,
0.23 to 20.00 %rh,
0.03 to 5.28 hPa,
0.04 to 5.36 °C,
0.05 to 2.80 °C,
0.04 to 3.36 °C,
0.03 to 4.24 °C
q_obserr,
rh_obserr,
e_obserr,
td_obserr,
tw_obserr,
t_obserr,
dpd_obserr
2σ measurement uncertainty 72 by 36 by 564 0.00 to 0.32 g kg-1,
0.02 to 3.87 %rh,
0.00 to 0.50 hPa,
0.00 to 1.56 °C,
0.00 to 0.04 °C,
0.00 to 0.05 °C,
0.01 to 1.61 °C
q_climerr,
rh_climerr,
e_climerr,
td_climerr,
tw_climerr,
t_climerr,
dpd_climerr
2σ climatological uncertainty 72 by 36 by 564 0.00 to 1.20 g kg-1,
0.06 to 6.07 %rh,
0.01 to 1.79 hPa,
0.01 to 2.94 °C,
0.01 to 3.16 °C,
0.02 to 2.85 °C,
0.01 to 2.10 °C
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 0.05 to 21.92 g kg-1,
12.04 to 94.48 %rh,
0.10 to 34.18 hPa,
-46.12 to 25.90 °C,
-35.85 to 27.01 °C,
-46.19 to 38.06 °C,
0.48 to 38.01 °C
mean_n_stations Total number of stations within the gridbox over entire record 72 by 36 0 to 78,
0 to 78,
0 to 78,
0 to 63,
0 to 64,
0 to 78,
0 to 65
actual_n_stations Actual number of stations within the gridbox for each time step 72 by 36 by 564 0 to 78,
0 to 78,
0 to 78,
0 to 60,
0 to 64,
0 to 77,
0 to 62
latitude Latitude in 5° 72 by 36 -87.5° S to 87.5° N
longitude Longitude in 5° 72 by 36 -177.5° W to 177.5° E
time Gregorian: Days since 1st January 1973 00:00:00 564 15 = January 1973,
17150 = December 2019
months 1-12 12 1 to 12


NetCDF station file field Description Dimensions
*_abs Monthly mean value 564
*_anoms Monthly mean anomaly from the 1981-2010 climatology period (climate anomaly, not standardised) 564
*_stds Standard deviation of all station monthly mean anomalies within the gridbox for each month 564
*_uncertainty Climatological, measurement and adjustment uncertainty combined in quadrature to give a 2σ station uncertainty 564
*_adjerr 2σ adjustment uncertainty 564
*_obserr 2σ measurement uncertainty 564
*_climerr 2σ climatological uncertainty 564
*_clims Monthly climatologies over the 1981-2010 period 12
times Months since January 1973 564
months 1-12 12



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