[ncl-talk] NDVI from Advanced Very High-Resolution Radiometer (AVHRR)

[Setareh Rahimi]

Dear all,

I need to calculate the monthly anomaly of the Normalized Difference
Vegetation Index (NDVI), from Advanced Very High-Resolution Radiometer
(AVHRR) sensor. I have downloaded AVHRR data (1986-2021) from the link
below:
https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ncdc:C01558/html
I first tried to prepare a script to combine all the data, and then
calculate the monthly average from daily data ( the link provides daily
data). After having monthly data I tried to figure out anomalies (the
script has been attached). But NCL stopped and returned nothing to me. I
just wonder what is wrong. Please kindly advise me on this issue.
Best wishes,


-- 
S.Rahimi
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