Advanced Vertical Atmospheric Profiling System Dropsondes (AVAPS) IMPACTS V1

The Advanced Vertical Atmospheric Profiling System (AVAPS) IMPACTS dataset consists of vertical atmospheric profile measurements collected by the Advanced Vertical Atmospheric Profiling System (AVAPS) dropsondes released from the NASA P-3 aircraft during the Investigation of Microphysics and Precipitation for Atlantic Coast-Threatening Snowstorms (IMPACTS) field campaign. IMPACTS was a three-year sequence of winter season deployments conducted to study snowstorms over the U.S Atlantic Coast (2020-2023). The campaign aimed to (1) Provide observations critical to understanding the mechanisms of snowband formation, organization, and evolution; (2) Examine how the microphysical characteristics and likely growth mechanisms of snow particles vary across snowbands; and (3) Improve snowfall remote sensing interpretation and modeling to significantly advance prediction capabilities. AVAPS uses a Global Positioning System (GPS) dropsonde to measure atmospheric state parameters (temperature, humidity, wind speed/direction, pressure) and location in 3-dimensional space during the dropsonde’s descent. The AVAPS dataset files are available from January 12, 2020 through February 25, 2022 in ASCII-ict format.

Data and Resources

Additional Info

Field Value
Maintainer undefined
Last Updated July 17, 2025, 17:01 (UTC)
Created March 31, 2025, 23:46 (UTC)
accessLevel public
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citation Thornhill, Kenneth L and Claire Robinson.2022. Advanced Vertical Atmospheric Profiling System Dropsondes (AVAPS) IMPACTS [indicate subset used]. Dataset available online from the NASA Global Hydrometeorology Resource Center DAAC, Huntsville, Alabama, U.S.A. DOI: http://dx.doi.org/10.5067/IMPACTS/AVAPS/DATA101
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harvest_source_id 61638e72-b36c-4866-9d28-551a3062f158
harvest_source_title DNG Legacy Data
identifier C2004708338-GHRC_DAAC
issued 2022-03-23
landingPage https://doi.org/10.5067/IMPACTS/AVAPS/DATA101
language {en-US}
metadata_type geospatial
modified 2023-01-26
programCode {026:001}
publisher NASA/MSFC/GHRC
resource-type Dataset
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source_schema_version 1.1
spatial -77.8148 33.5415 -65.44 44.1677
temporal 2020-01-12T21:04:13Z/2022-02-25T18:43:40Z
theme {IMPACTS,geospatial}