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GPM Ground Validation Autonomous Parsivel Unit (APU) LPVEx

Entry ID: gpmpalpvex

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Summary

Abstract: The Global Precipitation Measurement Ground Validation Experiment is the ground-based component of the GPM mission which also includes satellite data. The GPM mission is to study global rain, snow and ice to better understand our climate, weather, and hydrometeorological processes. The ground instruments include disdrometers and rain gauges. The satellite data will extend TRMM's observations of ... precipitation to higher latitudes with more frequent sampling. GPM will be capable of measuring rain rates as small as a hundredth of an inch per hour to as large as 4 inches an hour. GPM will be able to estimate the various sizes of precipitation particles, and will also discriminate between snow and rain. GPM will seek to achieve these measurements with a 3-hour average revisit time over 80% of the globe, and the data will be available to users within 3 hours of observation time.

The Light Precipitation Evaluation Experiment (LPVEx) took place in September and October 2010 in the Gulf of Finland to characterize the ability of CloudSat, the Global Precipitation Mission (GPM) Dual-frequency Precipitation Radar (DPR), and existing/planned passive microwave (PMW) sensors such as the GPM microwave imager (GMI) to detect light rain and evaluate their estimates of rainfall intensity in high latitude, shallow freezing level environments. The experiment leveraged in situ microphysical property measurements, coordinated remote sensing observations, and cloud resolving model simulations of high latitude precipitation systems to conduct a comprehensive evaluation of precipitation algorithms for current and future satellite platforms. The campaign will use these measurements to better understand the process of light rainfall formation at high latitudes and augment the currently limited database of light rainfall microphysical properties that form the critical assumptions at the root of satellite retrieval algorithm.

The Autonomous Parsivel Unit (APU) is an optical disdrometer based on single particle extinction that measures particle size and fall velocity. This APU consists of the Parsivel, which was developed by OTT in Germany, and its support systems, which were designed and built by the University of Alabama in Huntsville.

This dataset provides rainfall data for the Global Precipitation Measurement (GPM) Misson Ground Validation Experiment collected at four sites in Finland: Harmaja, Emasalo, and Jarvenpaa, and the Gulf of Finland(Aranda) during the Light Precipitation Validation Experiment, September-October 2010.

Related URL

Link: GET DATA > ECHO

Description: Refine your granule search with ECHO's next generation Earth Science discovery tool (Reverb) using information from this record.

Geographic Coverage

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Spatial coordinates

N: 60.29

S: 60.06

E: 25.37

W: 25.04

Temporal Coverage

Start Date: 2010-09-15

Stop Date: 2010-10-20

Location Keywords

CONTINENT > EUROPE > NORTHERN EUROPE > SCANDINAVIA > FINLAND

Science Keywords

ATMOSPHERE > PRECIPITATION > DROPLET SIZE

ATMOSPHERE > PRECIPITATION > PRECIPITATION AMOUNT

ATMOSPHERE > PRECIPITATION > PRECIPITATION RATE

ATMOSPHERE > PRECIPITATION > RAIN

ISO Topic Category

CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

Platform

GROUND-BASED OBSERVATIONS

Instrument

DISDROMETERS

APU > Autonomous Parsivel Unit (APU)

Project

EOSDIS > Earth Observing System Data Information System

ESIP > Earth Science Information Partners Program

GPM > Global Precipitation Measurement

CWIC > CEOS WGISS Integrated Catalog

Access Constraints none

Use Constraints none

Ancillary Keywords

EOSDIS

Data Center

Global Hydrology Resource Center, Marshall Space Flight Center, NASA

Data Center URL: http://ghrc.nsstc.nasa.gov/
Dataset ID: gpmpalpvex

Data Center Personnel
Name: GHRC USER SERVICES OFFICE Phone: 256-961-7932 Fax: 256-961-7859 Email: ghrcdaac at itsc.uah.edu Contact Address: GHRC User Services Office Global Hydrology Resource Center (GHRC) 320 Sparkman Drive City: Huntsville Province or State: AL Postal Code: 35805 Country: USA