GPM GV

GHRC published the GPM Ground Validation Two-Dimensional Video Disdrometer (2DVD) IFloodS dataset. This data was collected during the GPM Ground Validation Iowa Flood Studies (IFloodS) Field Experiment April through June 2013 in northeastern Iowa. The daily tar files contain ASCII data with information for raindrop size distribution and hydrometeors.

Global Hydrology Resource Center (GHRC) has published the dataset GPM Ground Validation Met One Rain Gauge Pairs IFloodS. Twenty-five tipping bucket rain gauge pairs were deployed during the Global Precipitation Measurement (GPM) Ground Validation (GV) Iowa Flood Studies (IFloodS) mission, which took place in Iowa during April-June 2013. Along with the disdrometers these rain gauges provided an additional means for directly measuring rainfall during the campaign. Two different models of these rain gauges, which are manufactured by MetOne Instruments, Inc., were used. The Model 380 gauges have a 30.5 cm diameter catchment funnel and a resolution of 0.2 mm of liquid water for each tip. The Model 370 gauges have a 20.3 cm diameter catchment funnel and a resolution of 0.01 inches.

GHRC has updated the GPM Ground Validation Met One Rain Gauge Pairs IFloodS dataset, which now has a more extended set of gauge files and also now includes “gmin” files that are interpolated to provide a one-minute rain rate. These data were collected from twenty-five tipping bucket rain gauge pairs deployed during the Global Precipitation Measurement (GPM) Ground Validation (GV) Iowa Flood Studies (IFloodS) mission occurring in Iowa during April-June 2013. Along with the disdrometers these rain gauges provided an additional means for directly measuring rainfall during the campaign. The Model 380 Precipitation Gauge, which is manufactured by MetOne Instruments, Inc., was used. The Model 380 gauges have a 30.5 cm diameter catchment funnel and a resolution of 0.2 mm of liquid water for each tip. The dataset guide is also now available.

GHRC published two GPM Ground Validation guides for its GCPEx campaign datasets:  the GPM Ground Validation Dual Polarized C-Band Doppler Radar King City GCPEx  and the GPM Ground Validation Advanced Microwave Radiometer Rain Identification (ADMIRARI) GCPEx.    The GPM  Cold-season Precipitation Experiment (GCPEx) took place in Ontario, Canada from  January  through March 2012.  The Dual Polarized C-Band Doppler Radar King City dataset has special RHI and sector scans of several dual polarization parameters created by the C-Band radar. Additionally, specially configured CARE-centric composites were also generated. Standard WKR IRIS volume and PPI scans, along with corresponding standard PPI imagery, are also included. The Advanced Microwave Radiometer Rain Identification (ADMIRARI)   dataset measures brightness temperatures at three frequencies (10.7, 21.0 and 36.5 GHz) and at two polarized planes (H & V). The ADMIRARI is a scanning radiometer like its auxiliary active instruments, i.e., Micro rain radar and cloud lidar which provide reflectivity profiles and cloud base altitude at the same scanning angle as the radiometer. The radiometer retrieval typically provides rain/cloud liquid water path (LWP) and integrated water vapor, and for low water content cases it provides the total LWP and integrated water vapor. Reference: http://www2.meteo.uni-bonn.de/admirari.

GHRC has updated the composite guide for GPM Ground Validation Two-Dimensional Video Disdrometer (2DVD) to include the Iowa Flood Studies (IFloodS) Field Experiment campaign information, data format and citation. The guide also covers the following experiments:Light Precipitation Evaluation Experiment (LPVEx), Midlatitude Continental Convective Clouds Experiment (MC3E) and GPM Cold-season Precipitation Experiment (GCPEx).

GHRC has published the guide for the GPM Ground Validation Environment Canada Snow Depth Surveys GCPEx dataset including dataset specific citation and DOI. The dataset was manually collected during the GPM Cold-season Precipitation Experiment (GCPEx) which occurred in Ontario, Canada, January 20, 2012 through February 27, 2012 across four sites (CARE, Steamshow, Huronia Airport, and Skydive-Jump). Snow depth, water equivalent and density transects were surveyed weekly at each of the GCPEx sites in order to provide baseline information on the distribution of snow on the ground. Pairs of bulk density and snow water equivalent measurements were made every 25 m along the same transect using an ESC-30 (30 cm2 cross sectional area) snow corer. Snow depth measurements were made every 50 cm along a 100 m transect using a GPS equipped snow depth probe.

GHRC has published the GPM Ground Validation Dual-frequency Dual-polarized Dopper Radar (D3R) guide for two missions: Iowa Flood Studies (IFloodS) and the GPM Cold Season Precipitation Experiment (GCPEx). The D3R is a fully polarimetric, scanning weather radar system operating at the nominal frequencies of 13.91 GHz and 35.56 GHz covering a maximum range of 30 km. The Doppler velocity, radar reflectivity, and spectrum width are provided in the data in the netCDF format. Browse images are also available in .png format.

GHRC has updated the GPM Ground Validation UND Citation Cloud Microphysics MC3E dataset with corrections of the vertical wind component and liquid water content files for data obtained while flying in ice crystals and mixed phase atmospheric conditions. These measurements were made from a suite of in situ instruments located on the University of North Dakota (UND) Cessna Citation aircraft, an airborne platform for the MC3E campaign.

GHRC published six GPM Ground Validation NEXRAD MC3E radar datasets. These data were collected from April 22, 2011 to June 6, 2011 for the Midlatitude Continental Convective Clouds Experiment (MC3E) which took place in central Oklahoma. Radar sites include KGLD, KICT, KINX, KTLX, KTWX, KVNX. The Next Generation Weather Radar system (NEXRAD) comprises 159 Weather Surveillance Radar-1988 Doppler (WSR-88D) sites throughout the United States and select overseas locations. The GPM Ground Validation NEXRAD MC3E data files are available as tarred binary files.

GHRC has published the GPM Ground Validation NEXRAD IFloodS datasets collected from four sites during March 29, 2013 to June 18, 2013 for the GPM Iowa Flood Studies (IFloodS) which occurred in eastern Iowa. The Next Generation Weather Radar system (NEXRAD) comprises more than 159 Weather Surveillance Radar-1988 Doppler (WSR-88D) sites throughout the United States and select overseas locations. The GPM Ground Validation NEXRAD IFloodS data files are available as Level 2 binary files, and provide radar reflectivity. More information including the Citation and DOIs can be found in their Guide.