Most datasets of surface meteorology are deterministic, yet many applications using these datasets require or can benefit from uncertainty estimates in meteorological fields. Motivated by this gap, we applied a locally-weighted spatial regression technique with the widely-used North American Land Data Assimilation version 2 (NLDAS-2) dataset values to generate ensemble estimates for daily precipitation, daily mean temperature, and diurnal temperature range. The approach is a form of ensemble dressing. This uncertainty dataset and methods from this work are made publicly available to support research such a data assimilation or model uncertainty studies.
The dataset includes a 100-member ensemble for daily precipitation, temperature and diurnal temperature range at 1/8th degree for the NLDAS-2 domain (25 to 53 North, 125 to 67 West), for the time period 1979-2019. It also includes the spatial regression coefficients and other inputs needed to run the Gridded Meteorological Ensemble Tool (GMET) used to generate the ensembles. A limited number of summary statistical analyses of the dataset are also included.
Temporal Range:
1979-01-01 00:00 +0000 to 2019-12-31 00:00 +0000
(Entire dataset)
Period details by dataset productPeriod details by dataset product1979-01-01 00:00 +0000 (Invariance reference data of the same (x=464,y=224) dimensions)1979-01-01 00:00 +0000 to 2019-12-31 00:00 +0000 (Spatial regression coefficients and other inputs to run Gridded Meteorological Ensemble Tool (GMET))1979-01-01 00:00 +0000 to 2019-12-31 00:00 +0000 (The 100-member ensemble for daily precipitation, temperature and diurnal temperature range)1979-01-01 00:00 +0000 to 2019-12-31 00:00 +0000 (The ensemble mean, spread, 95% and 5% probability)
Longitude Range: Westernmost=134.727W Easternmost=67.007W
Latitude Range: Southernmost=25.062N Northernmost=51.141N
Detailed coverage informationDetailed coverage information0.125° x 0.125° from 0E to 67.062W and 0N to 52.938N (464 x 224 Longitude/Latitude)11km x 11km (at 39N) oriented 96W (464x224 Lambert Conformal starting at 25.062N,124.938W)
Data Contributors:
UCAR/NCAR/CGD
Climate and Global Dynamics Division, National Center for Atmospheric Research, University Corporation for Atmospheric Research
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UCAR/NCAR/RAL/HAP
Hydrometeorological Applications Program, Research Application Laboratory, National Center for Atmospheric Research, University Corporation for Atmospheric Research
1.06 TB
(Entire dataset)
Volume details by dataset productVolume details by dataset productThe ensemble mean, spread, 95% and 5% probability: 38.95 GBSpatial regression coefficients and other inputs to run Gridded Meteorological Ensemble Tool (GMET): 48.44 GBThe 100-member ensemble for daily precipitation, temperature and diurnal temperature range: 975.64 GBInvariance reference data of the same (x=464,y=224) dimensions: 1.18 MB
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This work is licensed under a Creative Commons Attribution 4.0 International License.