1 Estimation of Gas Flaring Volumes Using NASA MODIS Fire Detection Products Christopher D. Elvidge NOAA National Geophysical Data Center 325 Broadway, Boulder, Colorado 80305 USA Kimberly E. Baugh Daniel Ziskin Sharolyn Anderson Tilottoma Ghosh Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder, Colorado 80303 USA December 30, 2010 Revised February 8, 2011