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MACPEX WB-57 Aircraft In-situ Cloud Data

Metadata Updated: December 7, 2023

MACPEX_Cloud_AircraftInSitu_WB57_Data is the in-situ cloud data collection during the Mid-latitude Airborne Cirrus Properties Experiment (MACPEX). Data was collected by the Small Ice Detector (SID), Video Ice Particle Sampler (VIPS), High Volume Precipitation Spectrometer (HVPS), and the 2D-S Stereo Probe (2DS). Data collection for this product is complete.

The MACPEX mission was an airborne field campaign that deployed from March 18th to April 26th, 2011. MACPEX sought to investigate cirrus cloud properties and the processes that affect their impact on radiation. The campaign conducted science flights using the NASA WB-57 aircraft based out of Ellington Airfield, Texas. Science flights were focused on the central North America vicinity, with an emphasis over the Southern Great Plains atmospheric observatory (established by the Department of Energy’s (DoE) Atmospheric Radiation Measurement (ARM) user facility) site in Oklahoma. MACPEX was a joint effort between NASA, the NOAA Earth System Research Laboratory (ESRL), the National Center for Atmospheric Research (NCAR), and several U.S. universities.

The WB-57 contained a comprehensive instrument payload for detailed in-situ measurements that were targeted to answer MACPEX’s four major science questions. The first science question that MACPEX explored was how prevalent the smaller crystals are in cirrus clouds, and how important they are for extinction, radiative forcing, and radiative heating. MACPEX also sought to understand how cirrus microphysical properties (particle size distribution, ice crystal habit, extinction, ice water content) are related to the dynamical forcing driving cloud formation. Researchers also investigated how cirrus microphysical properties are related to aerosol loading and composition, including the abundance of heterogeneous ice nuclei. Lastly, this campaign examined how cirrus microphysical properties evolve through the lifecycles of the clouds, and the role radiatively driven dynamical motions play.

In addition to the in-situ measurements, four flights were coordinated to validate the NASA EOS/A-Train satellite observations. NOAA also launched balloon sondes and ozonesondes, which were used to acquire data about the frost point and water vapor in the atmosphere. The balloon sondes and ozonesondes also acquired pressure, temperature, and humidity data, as well as measurements regarding the ozone in the atmosphere.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date December 1, 2022
Metadata Updated Date December 7, 2023

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date December 1, 2022
Metadata Updated Date December 7, 2023
Identifier C2222100016-LARC_ASDC
Data First Published 2021-11-26
Language en-US
Data Last Modified 2022-04-11
Category MACPEX, geospatial
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Citation 2022-02-15. Archived by National Aeronautics and Space Administration, U.S. Government, NASA/LARC/SD/ASDC.
Harvest Object Id 37512a4b-53f9-4f99-9e03-beb245dac73b
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL
Metadata Type geospatial
Old Spatial <?xml version="1.0" encoding="UTF-8"?><gml:Polygon xmlns:gml="" srsName="EPSG:9825"><gml:outerBoundaryIs><gml:LinearRing><gml:posList>15.0 -107.0 15.0 -80.0 45.0 -80.0 45.0 -107.0 15.0 -107.0</gml:posList></gml:LinearRing></gml:outerBoundaryIs><gml:innerBoundaryIs></gml:innerBoundaryIs></gml:Polygon>
Program Code 026:001
Source Datajson Identifier True
Source Hash 4c22c48215977fb545cdd6589bf24bd40d4343afed2d29d5c2fdf3151711aec8
Source Schema Version 1.1
Temporal 2011-03-18T00:00:00Z/2011-04-27T23:59:59.999Z

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