NLDAS News

NLDAS-2 part of NCEP Central Operations

NCEP implemented the NLDAS-2 system into NCEP Central Operations (NCO) on 5 Aug 2014. The NLDAS-2 products are available in GRIB-2 format. Operational users are encouraged to use the NCEP/NCO GRIB-2 products. GRIB-1 products, including near real-time updates and a complete archive, will continue to be available at the NASA Hydrology DISC. Note that these GRIB-1 updated products are only available in the NASA GES DISC format. Please see the NLDAS-2 Transition Plan. NCEP's NLDAS ftp server has a new address - ftp://ldas.ncep.noaa.gov/nldas2/ - and will serve as an archive of the NCEP/NCO GRIB-2 operational products. More information about this significant milestone, including the transition of research to operations (R2O), please see this Science Highlight.

NLDAS datasets are available from the NASA Hydrology Data and Information Services (HDISC) within the Goddard Earth Sciences Data and Information Services Center (GES DISC)

The Hydrology DISC portal enables access to hourly, monthly, and monthly climatology NLDAS datasets via ftp, GDS, Mirador, and Giovanni (hourly, monthly, and monthly climatology). Users can also perform subsetting and analysis operations without first downloading the data. All NLDAS datasets are now available to be downloaded in NetCDF format (as well as in the native GRIB-1 format). Phase 1 forcing, Phase 2 primary and secondary forcing, Phase 2 Mosaic, Phase 2 Noah, and Phase 2 VIC datasets are available. See the NLDAS-1 README and NLDAS-2 README files for details about the creation and content of these datasets, as well as the FAQ.

LDAS Mailing List

Users of NLDAS datasets are encouraged to join the LDAS mailing list for updates on new data releases, new data services, data reprocessing, and data delays or outages.

NLDAS Phase 2 publications

Numerous NLDAS Phase 2 articles have been recently published; please check the NLDAS publications page.

NLDAS data usage at the GES DISC

    Distribution of all NLDAS products from the NASA GES DISC for calendar year 2013:
  • Number of Distinct users: 4,868
  • Number of Files: 36,148,624 (over 36 million)
  • Total Volume: 66,160 Gb (over 66 Tb)

NLDAS-2 streamflow data, SAC LSM soil moisture data, and Noah Interim data available

NOAA/EMC's NLDAS group has released the following three items:

NLDAS snow cover, hurricane, heat wave, and cold season studies

NLDAS datasets were used to compare winter 2011-2012 with winter 2010-2011 for snow cover and surface temperature. A poster depicting extreme weather/climate events over North America during 2011 was presented at the AGU Chapman conference. NLDAS datasets were used to illustrate the precipitation and soil moisture along the east coast of the U.S. following the passage of Hurricane Irene and of Tropical Storm Lee, as well as the intensity of the heat wave in the central U.S. during July 2011. NLDAS datasets were used to examine the cold spring of 2013 over the United States.

NLDAS summertime precipitation study

NLDAS precipitation datasets were used to study the diurnal cycle of summertime precipitation. A news story and a science focus article describe the research. The full article was published in Geophysical Research Letters.

NLDAS drought monitor located at NOAA/NCEP/EMC

The near real-time NLDAS drought monitor is now located at NOAA/NCEP/EMC.

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