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NLDAS Primary Forcing Data L4 Hourly 0.125 x 0.125 degree

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Xia, Y., et al., NCEP/EMC
Publication_Date: 08.01.2009
Title: NLDAS Primary Forcing Data L4 Hourly 0.125 x 0.125 degree
Edition: 002
Geospatial_Data_Presentation_Form: Digital Science Data
Series_Information:
Series_Name: NLDAS_FORA0125_H
Issue_Identification:
Publication_Information:
Publication_Place: Greenbelt, Maryland, USA
Publisher: Goddard Earth Sciences Data and Information Services Center (GES DISC)
Other_Citation_Details:
Online_Linkage: http://disc.sci.gsfc.nasa.gov/datacollection/NLDAS_FORA0125_H_V002.shtml
Description:
Abstract:
This data set contains the primary forcing data "File A" for Phase 2 of the North American Land Data Assimilation System (NLDAS-2). The data are in 1/8th degree grid spacing and range from Jan 1979 to the present. The temporal resolution is hourly. The file format is WMO GRIB-1. Details about the generation of the NLDAS-2 forcing data sets can be found in Xia et al. (2012). The non-precipitation land surface forcing fields for NLDAS-2 are derived from the analysis fields of the NCEP North American Regional Reanalysis (NARR). NARR analysis fields are 32-km spatial resolution and 3-hourly temporal frequency. Those NARR fields that are utilized to generate NLDAS-2 forcing fields are spatially interpolated to the finer resolution of the NLDAS 1/8th-degree grid and then temporally disaggregated to the NLDAS hourly frequency. Additionally, the fields of surface pressure, surface downward longwave radiation, near-surface air temperature, and near-surface specific humidity are adjusted vertically to account for the vertical difference between the NARR and NLDAS fields of terrain height. This vertical adjustment applies the traditional vertical lapse rate of 6.5 K/km for air temperature. The details of the spatial interpolation, temporal disaggregation, and vertical adjustment are those employed in NLDAS-1, as presented by Cosgrove et al. (2003). The surface downward shortwave radiation field in "File A" is a bias-corrected field wherein a bias-correction algorithm was applied to the NARR surface downward shortwave radiation. This bias correction utilizes five years (1996-2000) of the hourly 1/8th-degree GOES-based surface downward shortwave radiation fields derived by Pinker et al. (2003). The potential evaporation field in "File A" is that computed in NARR using the modified Penman scheme of Mahrt and Ek (1984). The precipitation field in "File A" is not the NARR precipitation forcing, but is rather a product of a temporal disaggregation of a gauge-only CPC analysis of daily precipitation, performed directly on the NLDAS grid and including an orographic adjustment based on the widely-applied PRISM climatology. The precipitation is temporally disaggregated into hourly fields by deriving hourly disaggregation weights from either WSR-88D Doppler radar-based precipitation estimates, 8-km CMORPH hourly precipitation analyses, or NARR-simulated precipitation (based on availability, in order). The latter fields from radar, CMORPH, and NARR are used only to derive disaggregation weights and do not change the daily total precipitation. The field in "File A" that gives the fraction of total precipitation that is convective is an estimate derived from the following two NARR precipitation fields (which are provided in "File B"): NARR total precipitation and NARR convective precipitation (the latter is less than or equal to the NARR total precipitation and can be zero). The Convective Available Potential Energy (CAPE) is the final variable in the forcing data set, also interpolated from NARR. The hourly land surface forcing fields for NLDAS-2 are grouped into two GRIB files, "File A" and "File B". "File A" is the primary (default) forcing file and contains eleven fields. The data set applies a user-defined parameter table to indicate the contents and parameter number. The GRIBTAB file (http://disc.sci.gsfc.nasa.gov/hydrology/grib_tabs/gribtab_NLDAS_FORA_hourly.002.txt) shows a list of parameters for this data set, along with their Product Definition Section (PDS) IDs and units. For more information, please see the README Document at ftp://hydro1.sci.gsfc.nasa.gov/data/s4pa/NLDAS/README.NLDAS2.pdf.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Xia, Y., K. Mitchell, M. Ek, J. Sheffield, B. Cosgrove, E. Wood, L. Luo, C. Alonge, H. Wei, J. Meng, B. Livneh, D. Lettenmaier, V. Koren, Q. Duan, K. Mo, Y. Fan, and D. Mocko, (2012), Continental-scale water and energy flux analysis and validation for the North American Land Data Assimilation System project phase 2 (NLDAS-2): 1. Intercomparison and application of model products, J. Geophys. Res., 117, D03109, doi:10.1029/2011JD016048. Cosgrove, B. A., D. Lohmann, K. E. Mitchell, P. R. Houser, E. F. Wood, J. Schaake, A. Robock, C. Marshall, J. Sheffield, L. Luo, Q. Duan, R. T. Pinker, J. D. Tarpley, R. W. Higgins, and J. Meng (2003), Real-time and retrospective forcing in the North American Land Data Assimilation System (NLDAS) project, J. Geophys. Res., 108(D22), 8842, doi:10.1029/2002JD003118. Mahrt L., and M. Ek, 1984: The Influence of Atmospheric Stability on Potential Evaporation. J. Applied Meteorology, Vol 23, Issue 2, pp. 222–234. DOI: 10.1175/1520-0450(1984)023<0222:TIOASO>2.0.CO;2 Pinker, R. T., J. D. Tarpley, I. Laszlo, K. E. Mitchell, P. R. Houser, E. F. Wood, J. C. Schaake, A. Robock, D. Lohmann, B. A. Cosgrove, J. Sheffield, Q. Duan, L. Luo, and R. W. Higgins (2003), Surface radiation budgets in support of the GEWEX Continental-Scale International Project (GCIP) and the GEWEX Americas Prediction Project (GAPP), including the North American Land Data Assimilation System (NLDAS) project, J. Geophys. Res., 108(D22), 8844, doi:10.1029/2002JD003301.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19790101
Ending_Date: Unknown
Currentness_Reference:Unknown
Status:
Progress: In Work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -125.0
East_Bounding_Coordinate: -67.0
North_Bounding_Coordinate: 53.0
South_Bounding_Coordinate: 25.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > SURFACE PRESSURE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > EVAPORATION
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > HUMIDITY
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > LONGWAVE RADIATION
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > SHORTWAVE RADIATION
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > LIQUID PRECIPITATION > RAIN
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE TEMPERATURE > AIR TEMPERATURE
Theme_Keyword: MODELS/ANALYSES
Theme_Keyword: FORCING-LSM > FORCING DATA FOR LAND SURFACE MODEL
Theme_Keyword: EOSDIS > EARTH OBSERVING SYSTEM DATA INFORMATION SYSTEM
Theme_Keyword: ESIP > EARTH SCIENCE INFORMATION PARTNERS PROGRAM
Theme_Keyword: NLDAS > NORTH AMERICAN LAND DATA ASSIMILATION SYSTEM
Theme_Keyword: CWIC > CEOS WGISS INTEGRATED CATALOG
Theme_Keyword: Hydrology
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > GREAT LAKES
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > ALABAMA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > ARIZONA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > ARKANSAS
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > CALIFORNIA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > COLORADO
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > CONNECTICUT
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > DELAWARE
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > DISTRICT OF COLUMBIA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > FLORIDA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > GEORGIA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > IDAHO
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > ILLINOIS
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > INDIANA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > IOWA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > KANSAS
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > KENTUCKY
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > LOUISIANA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MAINE
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MARYLAND
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MASSACHUSETTS
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MICHIGAN
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MINNESOTA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MISSISSIPPI
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MISSOURI
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MONTANA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NEBRASKA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NEVADA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NEW HAMPSHIRE
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NEW JERSEY
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NEW MEXICO
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NEW YORK
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NORTH CAROLINA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NORTH DAKOTA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > OHIO
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > OKLAHOMA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > OREGON
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > PENNSYLVANIA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > RHODE ISLAND
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > SOUTH CAROLINA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > SOUTH DAKOTA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > TENNESSEE
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > TEXAS
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > UTAH
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > VERMONT
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > VIRGINIA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > WASHINGTON
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > WEST VIRGINIA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > WISCONSIN
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > WYOMING
Temporal:
Temporal_Keyword_Thesaurus: GCMD
Temporal_Keyword: Hourly
Access_Constraints: None
Use_Constraints:
None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GES DISC HELP DESK SUPPORT GROUP
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Goddard Earth Sciences Data and Information Services Center
Address: Code 610.2
Address: NASA Goddard Space Flight Center
City: Greenbelt
State_or_Province: MD
Postal_Code: 20771
Country: USA
Contact_Voice_Telephone: 301-614-5224
Contact_Facsimile_Telephone: 301-614-5268
Contact_Electronic_Mail_Address: gsfc-help-disc@lists.nasa.gov
Browse_Graphic:
Browse_Graphic_File_Name: http://hydro1.sci.gsfc.nasa.gov/data/browse/NLDAS/NLDAS_FORA0125_H.002/2007/NLDAS_FORA0125_H.002_apcpsfc.A20070701.1800.gif
Browse_Graphic_File_Description:
NLDAS-2 Primary Forcing Hourly 0.125 degree \ Precipitation Hourly Total at 18Z on July 01, 2007 [kg/m^2]
Browse_Graphic_File_Type: GIF
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The data are provisional and subject to change as model improvements are implemented and new input data sets become available.
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.125 degree
Longitude_Resolution: 0.125 degree
Geographic_Coordinate_Units: Decimal degrees
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NASA/GSFC/SED/ESD/GCDC/GESDISC > Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA
Contact_Person: GES DISC HELP DESK SUPPORT GROUP
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Goddard Earth Sciences Data and Information Services Center
Address: Code 610.2
Address: NASA Goddard Space Flight Center
City: Greenbelt
State_or_Province: MD
Postal_Code: 20771
Country: USA
Contact_Voice_Telephone: 301-614-5224
Contact_Facsimile_Telephone: 301-614-5268
Contact_Electronic_Mail_Address: gsfc-help-disc@lists.nasa.gov
Resource_Description: GES_DISC_NLDAS_FORA0125_H_V002
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: GRIB
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://disc.gsfc.nasa.gov/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
ftp://hydro1.sci.gsfc.nasa.gov/data/s4pa/NLDAS/NLD...
Access_Instructions:
Access the data via FTP.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://mirador.gsfc.nasa.gov/cgi-bin/mirador/homep...
Access_Instructions:
Mirador (from Spanish, a place providing a wide view) is a Google-based data archive search interface that allows searching, browsing, and retrieving of Earth science data at NASA GES DISC.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://disc.gsfc.nasa.gov/SSW/#keywords=NLDAS_FORA...
Access_Instructions:
Use the Simple Subset Wizard (SSW) to submit subset requests for hundreds of data sets across multiple data centers from a single unified interface.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://reverb.echo.nasa.gov/reverb/#utf8=%E2%9C%93...
Access_Instructions:
Search and retrieve data with Reverb ECHO
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://gdata1.sci.gsfc.nasa.gov/daac-bin/G3/gui.cg...
Access_Instructions:
The GES-DISC Interactive Online Visualization ANd aNalysis Interface (Giovanni) is a web-based tool that allows users to analyze gridded data interactively online without having to download any data.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://hydro1.sci.gsfc.nasa.gov/dods/NLDAS_FORA012...
Access_Instructions:
The GrADS Data Server (GDS, formerly known as GrADS-DODS Server) is another form of OPeNDAP that provides subsetting and some analysis services across the internet.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://disc.sci.gsfc.nasa.gov/hydrology/grib_tabs/...
Access_Instructions:
The GRIBTAB file contains a list of variables, along with the GRIB Product Definition Section (PDS) ID, variable short name, long names, and unit.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
ftp://hydro1.sci.gsfc.nasa.gov/data/gds/NLDAS/NLDA...
Access_Instructions:
The Grid Analysis and Display System (GrADS) data descriptor file contains a complete description of the binary data as well as instructions for GrADS on where to find the data and how to read it.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
ftp://hydro1.sci.gsfc.nasa.gov/data/s4pa/NLDAS/REA...
Access_Instructions:
README document
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://ldas.gsfc.nasa.gov/nldas/
Access_Instructions:
NLDAS Project Web Site
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://disc.sci.gsfc.nasa.gov/recipes/?q=recipe-co...
Access_Instructions:
GES DISC Services Cookbook main page
Fees: No Fee
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Metadata_Reference_Information:
Metadata_Date: 20090603
Metadata_Review_Date: 20160120
Metadata_Future_Review_Date: 20150430
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: HUALAN RUI
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Goddard Earth Sciences Data and Information Services Center
Address: Code 610.2
Address: NASA Goddard Space Flight Center
City: Greenbelt
State_or_Province: MD
Postal_Code: 20771
Country: USA
Contact_Voice_Telephone: 301-614-5200
Contact_Facsimile_Telephone: 301-614-5268
Contact_Electronic_Mail_Address: Hualan.Rui@nasa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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