A statistical Method to Correct Radiometric Data Measured by AVHRR Onboard the National Oceanic and Atmospheric Administration (NOAA) Polar Orbiting Environmental Satellites (POES)

Authors

Md Zahidur Rahman, CUNY La Guardia Community CollegeFollow
Leonid Roytman, CUNY City CollegeFollow
Abdelhamid Kadik, CUNY La Guardia Community CollegeFollow

Document Type

Article

Publication Date

5-16-2011

Abstract

This paper apply an statistical technique to correct radiometric data measured by Advanced Very High Resolution Radiometers(AVHRR) onboard the National Oceanic and Atmospheric Administration (NOAA) Polar Orbiting Environmental Satellites(POES). This paper study Normalized Difference Vegetation Index (NDVI) stability in the NOAA/NESDIS Global Vegetation Index (GVI) data for the period 1982-2003. AVHRR weekly data for the five NOAA afternoon satellites NOAA-7, NOAA-9, NOAA-11, NOAA-14, and NOAA-16 are used for the China dataset, for it includes a wide variety or different ecosystems represented globally. GVI has found wide use for studying and monitoring land surface, atmosphere, and recently for analyzing climate and environmental changes. Unfortunately the POES AVHRR data, though informative, can not be directly used in climate change studies because of the orbital drift in the NOAA satellites over these satellites' life time. This orbital drift introduces errors in AVHRR data sets for some satellites. To correct this error of satellite data, this paper implements Empirical Distribution Function (EDF) which is a statistical technique to generate error free long-term time-series for GVI data sets. We can use the same methodology globally to create vegetation index to improve the climatology.

Comments

This article originally appeared in Proceedings of SPIE, available at doi:10.1117/12.882919