HCMM satellite takes Earth's temperature


  • Anonymous


NASA's Heat Capacity Mapping Mission (HCMM) experimental satellite should be making snow measurements easier this winter. Although snowfield areas have been monitored for a number of years by Landsat and other satellites, HCMM's improved temperature measurements will be a great help in calculating the time and rate of snowmelt.

HCMM's unique day-night measurement sequence permits readings of temperature ranges associated with solar heating during the day and with radiative cooling at night. Its heat capacity mapping radiometer uses two channels to acquire visible and nearinfrared images in the daytime and thermal infrared images in both day and night cycles.