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NPP first images for land cover was obtained on 11/21/2011

Data and images displayed on STAR sites are provided for experimental use only and are not official operational NOAA products. More information>>

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STAR - Global Vegetation Health Products

Research on Vegetation : Equatorial Crossing Time (ECT) for NOAA Polar Satellites

The time series of Equitorial Crossing Time (ECT) was plotted for NOAA AVHRR instruments which data may be used for global vegetation monitoring.

Data source:
ECT data of 2009 and before: http://www.osdpd.noaa.gov/PSB/PPP/NAVIGATION/navpage_review.html
ECT data for NOAA-KLMNP: http://www.osdpd.noaa.gov/data/ppp/NAVIGATION/wklyarck.html
http://www.osdpd.noaa.gov/data/ppp/NAVIGATION/wklyarcl.html
http://www.osdpd.noaa.gov/data/ppp/NAVIGATION/wklyarcm.html
http://www.osdpd.noaa.gov/data/ppp/NAVIGATION/wklyarcn.html
http://www.osdpd.noaa.gov/data/ppp/NAVIGATION/wklyarcp.html

We compiled daily ECT dataset from above original data.
This plot is updated weekly.