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GPM Ground Validation Pluvio Precipitation Gauge GCPEx Table of Contents
The Pluvio precipitation gauge uses the balance principle to measure liquid, solid, or mixed precipitation. The Pluvio gauge, designed by OTT Hydromet in Kempten, Germany, provides continuous monitoring of precipitation accumulation and intensity. The Pluvio precipitation data for this campaign was collected during the GPM Cold-season Precipitation Experiment (GCPEx) which was held in Ontario, Canada. This data set consists of measurements collected with the Pluvio2 model 200 and model 400. The data was collected at five sites from December 2011 to February 2012. The data consists of ASCII files that contain information on the accumulation and intensity of precipitation within one minute and one hour intervals. CampaignThe GPM Cold-season Precipitation Experiment (GCPEx) occurred in Ontario, Canada during the winter season of 2011-2012. GCPEx addressed shortcomings in the GPM snowfall retrieval algorithm by collecting microphysical properties, associated remote sensing observations, and coordinated model simulations of precipitating snow. These data sets were collected to aid in the achievement of the over arching goal of GCPEx which is to characterize the ability of multi-frequency active and passive microwave sensors to detect and estimate falling snow. During GCPEx, the Pluvio2 200 gauge and the Pluvio2 400 gauge were installed at five sites in Ontario. The site name and location of the instruments are:
There was no Pluvio 200 gauge deployed at the
Bob Morton site during GCPEx. Data was collected from 8 December 2011 to
29 February 2012. Further details on GCPEx are available at http://gpm.nsstc.nasa.gov/gcpex. Information on the Global Precipitation Measurement (GPM) mission is available at http://pmm.nasa.gov/GPM.
Additional campagin collections containing Pluvio data can be found at http://ghrc.nsstc.nasa.gov. The Pluvio2 is a weighing precipitation gauge produced by OTT Hydromet. The Pluvio2 continuously monitors liquid, solid, and mixed precipitation accumulation. The Pluvio2 also features a temperature sensor that monitors environmental temperatures. The temperature, along with other factors that affect precipitation results, are factored into an algorithm that adjusts the precipitation data accordingly. To provide the best possible data, the load cell and sensor electronics are hermetically sealed against the environment. Further information on the Pluvio2 gauge can be found at http://www.ott.com/web/ott_de.nsf/id/pa_ott_pluvio%C2%B2_prod_eng.html. For GCPEx, both the Pluvio2 model 200 and model 400 were used to collect precipitation data. The Pluvio 200 has a 200 cm2 orifice which was heated and the Pluvio 400 has a 400 cm2 orifice which was not heated. InvestigatorsWalter A. Petersen Patrick Gatlin The Pluvio2 data set is contained within daily tar archives. The daily archive is named with the following convention:
where,
and consists of ASCII encoded files containing information on the amount of precipitation. The following files are found within the daily tar archive:
Additional Pluvio data sets, not contained within a daily tar archive but with a similar file naming convention, provide a summary of the precipitation events for the entire campaign. The additional data set is named with the following convention: Data Format The Pluvio2 data sets consist of ASCII text files with a file extension of .txt. More detailed information on the Data Format and Data Levels of the Pluvio2 data can be found in the Data Forma0t document. CitationOur data sets are provided through the NASA Earth Science Data and Information System (ESDIS) Project and the Global Hydrology Resource Center (GHRC) Distributed Active Archive Center (DAAC). GHRC DAAC is one of NASA's Earth Observing System Data and Information System (EOSDIS) data centers that are part of the ESDIS project. ESDIS data are not copyrighted; however, in the event that you publish our data or results derived by using our data, we request that you include an acknowledgment within the text of the article and a citation on your reference list. Examples for general acknowledgments, data set citation in a reference listing, and crediting online web images and information can be found at: http://ghrc.nsstc.nasa.gov/uso/citation.html To order these data or for further information, please contact:
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