The Moderate Resolution Imaging Spectrometer (MODIS) daily 1 km level 3 hotspot/fire products over East Asia and Asian Russia used in this study were from the Fire Information for Resource Management System (FIRMS), which was developed by the University of Maryland with funds from NASA (http://maps.geog.umd. edu). Fire Information for Resource Management System (FIRMS) integrates remote sensing and Geographic Information System (GIS) technologies to deliver near real‐time global Moderate Resolution Imaging Spectrometer (MODIS) hotspot/fire information to international users and support fire managers around the world by the MODIS Rapid Response System [Davies et al., 2009].