National Oceanic and Atmospheric Administration, United States Department of Commerce

Search - JPSS_NGRN


Data Description

    JPSS VIIRS Products (Non-Granule) (JPSS_NGRN) - Visible Infrared Imaging Radiometer Suite (VIIRS) sensor data records and intermediate products from the Joint Polar Satellite System (JPSS) have been used to generate these VIIRS Level 3 non-granule products. The products were developed by the NOAA/NESDIS Center for Satellite Application and Research (STAR) and were produced within a near real-time environment at the NOAA/NESDIS Office of Satellite and Product Operations (OSPO). The VIIRS Polar Winds cover the Arctic and Antarctic from 65 degrees latitude poleward. Tropospheric winds are measured by tracking the motion of cloud features in the overlapping region of three successive orbits. A triplet of images is used to facilitate consistency checking and quality control. Wind products include wind speed, direction, and height at high latitudes. The VIIRS Green Vegetation Fraction (GVF) dataset is used as an input to land surface models to provide a better characterization of the earth surface. NESDIS will evaluate the vegetation environmental data records, compare VIIRS composites to the legacy baseline for consistency, implement algorithm enhancements, and tailor the products for use by NWP models and continuity requirements. The VIIRS Vegetation Health Products (VHP) algorithm provides weekly estimates of the Vegetation Condition Index (VCI), Temperature Condition Index (TCI) and Vegetation Health Index (VHI). These indices are designed to characterize moisture (VCI), thermal (TCI) and total vegetation health (VHI) conditions in response to weather impacts. The VHP algorithm requires a smoothed Normalized Difference Vegetation Index (NDVI) and Brightness Temperature (BT) from VIIRS. A 15-week time series smoothing technique is used. Data in the middle of the time series present the best result, and so the data of the 7th week (prior) is the final product. VIIRS-based products provide mission continuity from the AVHRR on NOAA and MetOp series satellites. These archived products are distributed in the netCDF-4 file format with metadata attributes included. Please expand "Details - Metadata, Documentation" section below for more details. Individual product (Datatype) description, documentation, and possible bulk access options are available under the "Product Details" link.

Details - Metadata, Documentation

Notes


Temporal

(maximum range is 366 days)

Start Date
(format: YYYY-MM-DD)

Start DateStart Time (UTC)
(format: HH:MM:SS)

End Date
(format: YYYY-MM-DD)
End DateStart to EndEnd Time (UTC)
(format: HH:MM:SS)
Specify the range of the times for: Each Day Or The Entire Range Of Days

Advanced Search

Datatype
VIIRS Green Vegetation Fraction
VIIRS Polar Winds Daily Level 3 Northern Hemisphere
VIIRS Polar Winds Daily Level 3 Southern Hemisphere
VIIRS Smoothed Normalized Difference Vegetation Index
VIIRS Vegetation Health and Drought Products
VIIRS Global Vegetation Indices (Bi-Weekly) EDR
VIIRS Global Vegetation Indices (Daily) EDR
VIIRS Global Vegetation Indices (Weekly) EDR
VIIRS Regional Vegetation Indices (Bi-Weekly) EDR
VIIRS Regional Vegetation Indices (Daily) EDR
VIIRS Regional Vegetation Indices (Weekly) EDR


Satellite



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