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CALIPSO Night Validation Flights High Spectral Resolution Lidar (HSRL-2) Data

Metadata Updated: December 6, 2023

The CALIPSO Night Validation Flights (CALIPSO-NVF) airborne deployment was conducted in August 2022 out of Bermuda. The goal was to conduct a series of nighttime underflights of the CALIPSO satellite with the NASA Langley High Spectral Resolution Lidar (HSRL-2). Airborne measurements from the NASA Langley HSRL-2 instrument are essential for verifying the calibration accuracy of the CALIPSO lidar and for acquiring information on aerosol optical properties used for its aerosol profile retrievals. By flying under the CALIPSO ground track, HSRL-2 provides an independent measurement of lidar attenuated backscatter with a higher signal-to-noise ratio. To obtain this important validation dataset, the HSRL-2 was flown on board the LaRC B-200 King Air as CALIPSO passed within range of the aircraft. The western Atlantic Ocean was selected for CALIPSO-NVF to allow unobstructed, 45-minute flights along the satellite ground track. Five nighttime underflights were executed in total – four in cloud-free skies on August 7, 10, 12, and 17th, yielding ideal data from both instruments for calibration validation. The fifth flight on August 18th targeted measurements beneath cirrus to assess the accuracy of CALIPSO aerosol retrievals through high clouds at night, an important but previously unexplored validation target. Total research flight time was 17.7 hours, sampling 2,200 km along the CALIPSO ground track.

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 April 27, 2023
Metadata Updated Date December 6, 2023

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date April 27, 2023
Metadata Updated Date December 6, 2023
Identifier C2647128668-LARC_ASDC
Data First Published 2022-08-07
Language en-US
Data Last Modified 2023-02-07
Category CALIPSO-NVF, geospatial
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Citation 2023-03-24. Archived by National Aeronautics and Space Administration, U.S. Government, NASA/LARC/SD/ASDC.
Harvest Object Id ac661455-b81d-4cd6-80a5-8f28bd3ec57f
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>25.0 -69.3 25.0 -58.9 38.0 -58.9 38.0 -69.3 25.0 -69.3</gml:posList></gml:LinearRing></gml:outerBoundaryIs><gml:innerBoundaryIs></gml:innerBoundaryIs></gml:Polygon>
Program Code 026:001
Source Datajson Identifier True
Source Hash a37b39836a0e4accd6c373c364449187737b9c6f67ffc4707b7b221e6606467b
Source Schema Version 1.1
Temporal 2022-08-06T00:00:00Z/2022-08-19T00:00:00Z

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