Evaluating the effect of soil moisture, surface temperature, and humidity variations on MODIS-derived NDVI values

Author

Al-Shehhi, Maryam R. ; Saffarini, Rasha ; Farhat, Ali ; Al-Meqbali, Nada K. ; Ghedira, Hosni

Author_Institution

Masdar Inst. of Sci. & Technol., Abu Dhabi, United Arab Emirates

fYear

2011

fDate

24-29 July 2011

Firstpage

3160

Lastpage

3163

Abstract

The capability to observe soil moisture frequently and over large regions could significantly enhance our ability to monitor vegetation conditions over time and space. The purpose of this project is to evaluate the effects of soil moisture, temperature, and humidity variations on vegetation conditions in the UAE. Visible and near-infrared channels of MODIS instrument on board of aqua satellite were used in this study. The Normalized Difference Vegetation Index (NDVI) was applied to map the extent of vegetation coverage. It was found in this study that the vegetation areas with NDVI values between 0 and 0.2 have significant correlation with average soil moisture, minimum humidity and maximum temperature and the humidity has the maximum effect on these vegetated areas. However, much lower correlation was found with high NDVI areas.

Keywords

atmospheric humidity; land surface temperature; radiometers; soil; vegetation; vegetation mapping; Aqua satellite; MODIS-derived NDVI values; UAE; humidity variation; normalized difference vegetation index; soil moisture; surface temperature; vegetation condition; vegetation coverage; Clouds; Correlation; Humidity; MODIS; Soil moisture; Vegetation mapping; MODIS; NDVI; humidity; soil moisture; temperature; vegetation;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2011 IEEE International

Conference_Location

Vancouver, BC

ISSN

2153-6996

Print_ISBN

978-1-4577-1003-2

Type

conf

DOI

10.1109/IGARSS.2011.6049889

Filename

6049889