ASDC | AirSHARP_Aerosol_AircraftInSitu_CIRPAS-TO_Data

AirSHARP Level 2

Entry Title: AirSHARP CIRPAS Twin Otter In-Situ Aerosol Data

Entry ID: AirSHARP_Aerosol_AircraftInSitu_CIRPAS-TO_Data_1

Aerosols

Description

AirSHARP_Aerosol_AircraftInSitu_CIRPAS-TO_Data is the in-situ aerosol data collected onboard the Twin Otter aircraft flying the CIRPAS suite of instruments during the Airborne aSsessment of Hyperspectral Aerosol optical depth and water-leaving Reflectance (AirSHARP) campaign. Data from the Spectrometers for Sky-Scanning, Sun-Tracking Atmospheric Research (4STAR) instrument is featured in this collection. Data collection for this product is complete.

NASA’s Airborne aSsessment of Hyperspectral Aerosol optical depth and water-leaving Reflectance (AirSHARP) observed the atmosphere and ocean for validating the Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) satellite’s Ocean Color Instrument (OCI). During October 2024 and May 2025, AirSHARP conducted simultaneous airborne and seaborne campaigns to collect data under different environmental conditions, validating as much of OCI’s range as possible. Over the two deployments, 14 flights were conducted utilizing the NPS CIRPAS Twin Otter Aircraft. The aircraft was equipped with facility instruments measuring meteorological and navigation parameters, along with the Spectrometer for sky-scanning sun Tracking Atmospheric Research B (4STAR-B) instrument. Additional radiometer package, C-AIR (Coastal Airborne In-Situ Radiometers), for sampling the water leaving radiances and remote sensing reflectances of the Monterey Bay were on board the Twin Otter during AirSHARP, with its data archived in the SeaBass archive (https://seabass.gsfc.nasa.gov/experiment/PVST_AIRSHARP). The overarching goal of both AirSHARP deployments was to assess hyperspectral aerosol optical depth and water-leaving reflectance products for PACE OCI and polarimeter validation.

Resources and Documentation

Earthdata Forum

PROJECT HOME PAGE

PACE-PAX Project Home Page

PACE-PAX Home Page

PACE-PAX ESPO Home Page

VIEW RELATED INFORMATION

DATA CITATION GUIDELINES

How to Cite ASDC Data

GENERAL DOCUMENTATION

Airborne Measurements of Ocean Color and Aerosols for Validation of NASA’s PACE Satellite

PUBLICATIONS

PACE-PAX White Paper

By Air and by Sea: Validating NASA’s PACE Ocean Color Instrument

From GCMD Science Keywords:

ANGSTROM EXPONENT > AEROSOL OPTICAL DEPTH/THICKNESS
ABSORBING AEROSOL OPTICAL DEPTH/THICKNESS > AEROSOL OPTICAL DEPTH/THICKNESS

Data Distribution

Spatial Information

Spatial Coverage: (S: 36.42, N: 36.97), (W: -122.43, E: -121.38)
Spatial Coverage Type: Horizontal Vertical
Coordinate System: Cartesian
Granule Spatial Representation: Cartesian

Locations

NORTHERN HEMISPHERE WESTERN HEMISPHERE TROPOSPHERE SAN JOSE

Temporal Information

Temporal Coverage: 2024-10-07 - 2025-05-21

Platforms

Propeller

TWIN OTTER CIRPAS NPS

4STAR

Spectrometers for Sky-Scanning, Sun-Tracking Atmospheric Research

Metadata Dates

Created on 2026-04-07