GHRC News
The NASA Global Hydrology Resource Center (GHRC) DAAC published the GPM Ground Validation Two-Dimensional Video Disdrometer (2DVD) C3VP dataset. This dataset consists of snowfall data collected by the Two-Dimensional Video Disdrometer (2DVD) during the Canadian CloudSat/CALIPSO Validation Project (C3VP) field campaign. The campaign took place in southern Canada in support of multiple science missions, including the NASA GPM mission, in order to improve the modeling and remote sensing of winter precipitation. The 2DVD measures precipitation characteristics such as size, shape, and velocity. During C3VP, there was one 2DVD instrument deployed at the Meteorological Service of Canada (MSC) operated Centre for Atmospheric Research Experiments (CARE) facility in Ontario, Canada. The data include diameter, volume, and fall speed information for individual snowflakes. The dataset files are available in ASCII text format from December 2, 2006 through April 9, 2007.
The NASA Global Hydrology Resource Center (GHRC) DAAC published the Pluvio2 Precipitation Gauge instrument micro article. This can observe rain, snow, sleet, and hail. The Pluvio2 is a weighing precipitation gauge that determines both the rate and amount of precipitation by determining its weight. This is done through measuring electrical signals created by the force of the weight of the collection bucket. The instrument includes filter algorithms to reduce the effects of wind, temperature, and evaporation on measurement accuracy. The Pluvio2 has been used for a variety of purposes including precipitation studies, flood monitoring, and instrument calibration. This micro article provides an overview of the Pluvio2 and its applications to support current and future GHRC dataset publications. The micro article is available at: https://ghrc.nsstc.nasa.gov/home/micro-articles/instrument-pluvio%C2%B2-precipitation-gauge