Variations in Subpixel Fire Properties with Season and Land Cover in Southern Africa

Earth Interactions

Ted C.Eckmann¹ 

关键词: Fire temperature;    MODIS;    Southern Africa;   

DOI  :  10.1175/2010EI328.1

学科分类：地球科学(综合)

来源: American Geophysical Union

【 摘 要 】

Abstract Some of the most widely used datasets for monitoring the world’s fires come from the Moderate Resolution Imaging Spectroradiometer (MODIS) sensors aboard NASA’s Terra and Aqua satellites. For virtually all remote sensing systems, including MODIS, pixels that contain fires comprise a mix of burning and nonburning components, each with sizes and temperatures that vary between pixels. Current remote sensing products provide little information about these subpixel components, severely limiting estimates of the gas and aerosol emissions and ecological impacts from the world’s fires. This study shows how multiple endmember spectral mixture analysis (MESMA) can estimate subpixel fire sizes and temperatures from MODIS and can overcome many limitations of existing methods for characterizing fire intensities from remotely sensed data, such as the fire radiative power (FRP) approach. This study used MESMA to estimate subpixel fire sizes and temperatures for MODIS scenes in southern Africa, analyzed how thes...

【 授权许可】

Unknown