This data set contains a series of land surface parameters simulated from the Noah land-surface model (LSM) 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 monthly. The file format is WMO GRIB-1. The NLDAS-2 monthly Noah model data were generated from the NLDAS-2 ... hourly Noah model data, as monthly accumulation for rainfall, snowfall, subsurface runoff, surface runoff, total evapotranspiration, and snow melt, and monthly average for other variables. Monthly period of each month is from 00Z at start of the month to 23:59Z at end of the month, except the first month (Jan 1979) that starts from 00Z 02 Jan 1979. Also for the first month (Jan 1979), because the variables listed as instantaneous in the README file (http://hydro1.sci.gsfc.nasa.gov/data/s4pa/NLDAS/README.NLDAS2.pdf) do not have valid data exactly on 00Z 02 Jan 1979, and this one hour is not included in the average for this month only.
Details about the NLDAS-2 configuration of the Noah LSM can be found in Xia et al. (2012).
The NLDAS-2 Noah monthly data contain fifty-two 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_NOA...) shows a list of parameters for this data set, along with their Product Definition Section (PDS) IDs and units.
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.
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.
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.
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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.
Betts, A., F. Chen, K. Mitchell, and Z. Janjic (1997), Assessment of the land surface and boundary layer models in two operational versions of the NCEP Eta model using FIFE data, Mon. Weather Rev., 125, 2896-2916, doi:10.1175/1520-0493(1997)125<2896:AOTLSA>2.0.CO;2.
Chen, F., Z. Janjic, and K. Mitchell (1997), Impact of atmospheric surface-layer parameterizations in the new land-surface scheme of the NCEP mesoscale Eta model, Boundary Layer Meteorol., 85, 391-421, doi:10.1023/A:1000531001463.
Ek, M. B., K. E. Mitchell, Y. Lin, E. Rodgers, P. Grunman, V. Koren, G. Gayno, and J. D. Tarpley (2003), Implementation of Noah land surface model advances in the National Centers for Environmental Prediction operational mesoscale Eta model, J. Geophys. Res., 108(D22), 8851, doi:10.1029/2002JD003296.
Koren, V., J. Schaake, K. E. Mitchell, Q. Duan, F. Chen, and J. Baker (1999), A paramerization of snowpack and frozen ground intended for NCEP weather and climate models, J. Geophys. Res., 104, 19569-19585, doi:10.1029/1999JD900232.
Livneh, B., Y. Xia, M. B. Ek, K. E. Mitchell, and D. Lettenmaier (2010), Noah LSM snow model diagnostics and enhancements, J. Hydrometeorol., 11, 721-738, doi:10.1175/2009JHM1174.1.
Wei, H., Y. Xia, K. E. Mitchell, and M. B. Ek (2011), Improvement of Noah land surface model for warm season processes: Evaluation of water and energy flux simulation, Hydrol. Processes, doi:10.1002/hyp.9214.