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 data       graph  M    public Global Monthly Dai Palmer Drought Severity Index (old, pdsi.mon.mean.selfcalibrated.19502010)    ?   F   I   M   background (external link) RSS Subscribe NOAA ESRL noaa_esrl_7dff_f5a3_c84b

The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL cdm_data_type String Grid
attribute NC_GLOBAL comment String original creation date: Thu Oct 25 15:25:40 MDT 2012 at NCAR. Written at PSD Apr 2013
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String esrl.psd.data@noaa.gov
attribute NC_GLOBAL creator_name String NOAA ESRL PSD
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.esrl.noaa.gov/psd/ (external link)
attribute NC_GLOBAL dataset_title String Palmer Drought Severity Index
attribute NC_GLOBAL description String Monthly Self-calibrated Palmer Drought Severity Index (scPDSI)
calculated using observed surface air temperature (HadCRUT3 from
https://www.cru.uea.ac.uk/cru/data/temperature/ ) and
precipitation (from Dai et al. (1997, J.Clim: for 1870-1947) +
Chen et al. (2002, J. Hydromet.: for 1948-1978 + GPCP v2.2 for
1979-present. The Dai and Chen P data were adjusted to have the
same mean as the GPCP data over the 1979-1996 period).
Calibration (or reference) period is 1950-1979. Documention:
Dai, A., 2011a: Characteristics and trends in various forms of the
Palmer Drought Severity Index (PDSI) during 1900-2008. J. Geophys.
Res., 116, D12115, doi:10.1029/2010JD015541.
Dai, A., K. E. Trenberth, and T. Qian, 2004: A global data set of
Palmer Drought Severity Index for 1870-2002: Relationship with soil
moisture and effects of surface warming. J. Hydrometeorology, 5,
1117-1130. Data source: Dr. A. Dai/NCAR (adai@ucar.edu). See
http://www.cgd.ucar.edu/cas/catalog/climind/pdsi.html for updates.
WARNING: PDSI and scPDSI over the higher latitudes (e.g., >50deg.)
may not be a good proxy of soil moisutre content. Also, PDSI and
scPDSI are highly autocorrelated indices not good at resolving
sub-seasonal variations. Please use with caution!
attribute NC_GLOBAL details String see ncar for more detials and updates
attribute NC_GLOBAL Easternmost_Easting double 178.75
attribute NC_GLOBAL geospatial_lat_max double 76.25
attribute NC_GLOBAL geospatial_lat_min double -58.75
attribute NC_GLOBAL geospatial_lat_resolution double 2.5
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double 178.75
attribute NC_GLOBAL geospatial_lon_min double -178.75
attribute NC_GLOBAL geospatial_lon_resolution double 2.5
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL history String created Apr 2013 from data at NCAR webpage
attribute NC_GLOBAL id String Datasets.dai_pdsi.old.pdsi.mon.mean.selfcalibrated.19502010.nc
attribute NC_GLOBAL infoUrl String https://www.esrl.noaa.gov/psd/data/gridded/data.pdsi.html (external link)
attribute NC_GLOBAL institution String NOAA ESRL
attribute NC_GLOBAL keywords String atmospheric, calibrated, center, climatology, dai, data, drought, earth, esrl, global, gpcp, index, laboratory, latitude, longitude, monteith, month, monthly, national, ncar, noaa, old, palmer, pdsi, pdsi.mon.mean.selfcalibrated.19502010, penman, penman-monteith, precipitation, project, rain, rainfall, research, scpdsi, self, self-calibrated, severity, system, time, using
attribute NC_GLOBAL license String The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.
attribute NC_GLOBAL Northernmost_Northing double 76.25
attribute NC_GLOBAL original_source String NCAR/UCAR: A Dai http://www.cgd.ucar.edu/cas/catalog/climind/pdsi.html.
attribute NC_GLOBAL references String https://www.esrl.noaa.gov/psd/data/gridded/data.pdsi.html (external link)
attribute NC_GLOBAL sourceUrl String https://www.esrl.noaa.gov/psd/thredds/dodsC/Datasets/dai_pdsi/old/pdsi.mon.mean.selfcalibrated.19502010.nc (external link)
attribute NC_GLOBAL Southernmost_Northing double -58.75
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v29
attribute NC_GLOBAL summary String Global Monthly Dai Palmer Drought Severity Index. Monthly Self-calibrated Palmer Drought Severity Index (scPDSI)
calculated using observed surface air temperature (HadCRUT3 from
https://www.cru.uea.ac.uk/cru/data/temperature/ ) and
precipitation (from Dai et al. (1997, J.Clim: for 1870-1947) +
Chen et al. (2002, J. Hydromet.: for 1948-1978 + Global Precipitation Climatology Project (GPCP) v2.2 for
1979-present. The Dai and Chen P data were adjusted to have the
same mean as the GPCP data over the 1979-1996 period).
Calibration (or reference) period is 1950-1979. Documention:
Dai, A., 2011a: Characteristics and trends in various forms of the
Palmer Drought Severity Index (PDSI) during 1900-2008. J. Geophys.
Res., 116, D12115, doi:10.1029/2010JD015541.
Dai, A., K. E. Trenberth, and T. Qian, 2004: A global data set of
Palmer Drought Severity Index for 1870-2002: Relationship with soil
moisture and effects of surface warming. J. Hydrometeorology, 5,
1117-1130. Data source: Dr. A. Dai/National Center for Atmospheric Research (NCAR) (adai@ucar.edu). See
http://www.cgd.ucar.edu/cas/catalog/climind/pdsi.html for updates.
WARNING: PDSI and scPDSI over the higher latitudes (e.g., >50deg.)
may not be a good proxy of soil moisutre content. Also, PDSI and
scPDSI are highly autocorrelated indices not good at resolving
sub-seasonal variations. Please use with caution!
attribute NC_GLOBAL time_coverage_end String 2010-12-01T00:00:00Z
attribute NC_GLOBAL time_coverage_start String 1850-01-01T00:00:00Z
attribute NC_GLOBAL title String Global Monthly Dai Palmer Drought Severity Index (old, pdsi.mon.mean.selfcalibrated.19502010)
attribute NC_GLOBAL Westernmost_Easting double -178.75
dimension time   double nValues=1932, evenlySpaced=false, averageSpacing=30 days 10h 28m 39s
attribute time _CoordinateAxisType String Time
attribute time actual_range double -3.7868256E9, 1.2911616E9
attribute time avg_period String 0000-01-00 00:00:00
attribute time axis String T
attribute time delta_t String 0000-01-00 00:00:00
attribute time ioos_category String Time
attribute time long_name String Time
attribute time standard_name String time
attribute time time_origin String 01-JAN-1970 00:00:00
attribute time units String seconds since 1970-01-01T00:00:00Z
dimension latitude   float nValues=55, evenlySpaced=true, averageSpacing=2.5
attribute latitude _CoordinateAxisType String Lat
attribute latitude actual_range float -58.75, 76.25
attribute latitude axis String Y
attribute latitude ioos_category String Location
attribute latitude long_name String Latitude
attribute latitude standard_name String latitude
attribute latitude units String degrees_north
dimension longitude   float nValues=144, evenlySpaced=true, averageSpacing=2.5
attribute longitude _CoordinateAxisType String Lon
attribute longitude actual_range float -178.75, 178.75
attribute longitude axis String X
attribute longitude ioos_category String Location
attribute longitude long_name String Longitude
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable pdsi   float time, latitude, longitude
attribute pdsi actual_range float -89.58, 93.1
attribute pdsi colorBarMaximum double 100.0
attribute pdsi colorBarMinimum double -100.0
attribute pdsi ioos_category String Time
attribute pdsi least_significant_digit short 2
attribute pdsi level_desc String Surface
attribute pdsi long_name String Monthly Self-calibrated Palmer Drought Severity Index using Penman-Monteith PE
attribute pdsi missing_value float -99999.0
attribute pdsi statistic String Mean
attribute pdsi units String Standardized Units of Relative Dry and Wet
attribute pdsi valid_range float -100.0, 100.0
attribute pdsi var_desc String Palmer Drought Severity Index

This information is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.
 


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