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Instrument

WISPER
Water Isotope System for Precipitation and Entrainment Research

The Water Isotope System for Precipitation and Entrainment Research (WISPER) is an in situ airborne instrument that measures condensed water content and water vapor. It consists of two inlets, with the primary inlet being a counterflow virtual impactor (CVI) that collects air samples. Picarro cavity ringdown laser spectrometers (CRDS) measure condensed water and water vapor within the air samples. WISPER can also provide water vapor isotopic abundances. It has a typical sampling frequency of 1 second.

WISPER instrument on the NASA P-3
NASA's DC-8 flying laboratory passes Antarctica's tallest peak, Mount Vinson, on Oct. 22, 2012, during a flight over the continent to measure changes in the massive ice sheet and sea ice. Credit: NASA/Michael Studinger (Photography courtesy NASA Images)

Instrument Details

Spectrometer/Radiometer
Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Water Vapor
Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators
Earth Science > Atmosphere > Atmospheric Water Vapor
Troposphere
1 s
Point
N/A
Currently unavailable

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