The antenna on the top of the trailer is a Micro Rain Radar (MRR). Note the large double fencing around additional instruments behind the trailer. The double fencing reduces errors due to blowing snow. Photo taken 7 February 2012.
The sensor reacts by applying voltage to maintain the equal temperatures. The voltage is then converted to Watts (a measure of the power taken to evaporate the precipitation). This power is divided by the heat needed to evaporate one gram of water, thus providing the total grams of water falling on the hot plate. Photo taken 7 February 2012.
Note the metal “double fencing” around the instrument. This reduces inaccuracies in the measurements due to blowing snow. Photo taken 7 February 2012.
Note the low snow amounts on the ground. Sensors left to right are: ADMIRARI (radiometer; U. Bonn), D3R (radar; NASA), DPR (radar; U. Koln). [This dual-precipitation radar (DRR) is not the same as to be on the GPM spacecraft.]
