ASDC | ACTIVATE_Merge_Data

ACTIVATE Level 3

Entry Title: ACTIVATE Falcon Aircraft Merge Data Files

Entry ID: ACTIVATE_Merge_Data_1

Aerosols Clouds

Description

ACTIVATE_Merge_Data is the pre-generated merge data files created from data collected onboard the HU-25 Falcon aircraft during the ACTIVATE project. ACTIVATE was a 5-year NASA Earth-Venture Sub-Orbital (EVS-3) field campaign. Marine boundary layer clouds play a critical role in Earth’s energy balance and water cycle. These clouds cover more than 45% of the ocean surface and exert a net cooling effect. The Aerosol Cloud meTeorology Interactions oVer the western Atlantic Experiment (ACTIVATE) project was a five-year project that provides important globally-relevant data about changes in marine boundary layer cloud systems, atmospheric aerosols and multiple feedbacks that warm or cool the climate. ACTIVATE studied the atmosphere over the western North Atlantic and sampled its broad range of aerosol, cloud and meteorological conditions using two aircraft, the UC-12 King Air and HU-25 Falcon. The UC-12 King Air was primarily used for remote sensing measurements while the HU-25 Falcon will contain a comprehensive instrument payload for detailed in-situ measurements of aerosol, cloud properties, and atmospheric state. A few trace gas measurements were also onboard the HU-25 Falcon for the measurements of pollution traces, which will contribute to airmass classification analysis. A total of 150 coordinated flights over the western North Atlantic occurred through 6 deployments from 2020-2022. The ACTIVATE science observing strategy intensively targets the shallow cumulus cloud regime and aims to collect sufficient statistics over a broad range of aerosol and weather conditions which enables robust characterization of aerosol-cloud-meteorology interactions. This strategy was implemented by two nominal flight patterns: Statistical Survey and Process Study. The statistical survey pattern involves close coordination between the remote sensing and in-situ aircraft to conduct near coincident sampling at and below cloud base as well as above and within cloud top. The process study pattern involves extensive vertical profiling to characterize the target cloud and surrounding aerosol and meteorological conditions.

Marine boundary layer clouds play a critical role in Earth’s energy balance and water cycle. These clouds cover more than 45% of the ocean surface and exert a net cooling effect. The Aerosol Cloud meTeorology Interactions oVer the western Atlantic Experiment (ACTIVATE) project is a five-year project (January 2019-December 2023) that will provide important globally-relevant data about changes in marine boundary layer cloud systems, atmospheric aerosols and multiple feedbacks that warm or cool the climate. ACTIVATE studies the atmosphere over the western North Atlantic and samples its broad range of aerosol, cloud and meteorological conditions using two aircraft, the UC-12 King Air and HU-25 Falcon. The UC-12 King Air will primarily be used for remote sensing measurements while the HU-25 Falcon will contain a comprehensive instrument payload for detailed in-situ measurements of aerosol, cloud properties, and atmospheric state. A few trace gas measurements will also be onboard the HU-25 Falcon for the measurements of pollution traces, which will contribute to airmass classification analysis. A total of 150 coordinated flights over the western North Atlantic are planned through 6 deployments from 2020-2022. The ACTIVATE science observing strategy intensively targets the shallow cumulus cloud regime and aims to collect sufficient statistics over a broad range of aerosol and weather conditions which enables robust characterization of aerosol-cloud-meteorology interactions. This strategy is implemented by two nominal flight patterns: Statistical Survey and Process Study. The statistical survey pattern involves close coordination between the remote sensing and in-situ aircraft to conduct near coincident sampling at and below cloud base as well as above and within cloud top. The process study pattern involves extensive vertical profiling to characterize the target cloud and surrounding aerosol and meteorological conditions.

DOI

10.5067/ASDC/SUBORBITAL/ACTIVATE_Merge_Data_1

Citation Styles for this Dataset

Resources and Documentation

Earthdata Forum

PROJECT HOME PAGE

ACTIVATE Project Home Page

ACTIVATE NASA LaRC Airborne Science Data for Atmospheric Composition Project Home Page

VIEW RELATED INFORMATION

DATA CITATION POLICY

Creative Commons License
How to cite ASDC data

GENERAL DOCUMENTATION

MICRO ARTICLE

ASDC Microarticle “Advancing Aerosol-Cloud-Meteorology Knowledge through ACTIVATE”

PUBLICATIONS

Nasa.gov Feature “ACTIVATE Makes a Careful Return to Flight”

Nasa.gov Feature “NASA Embarks on Five U.S. Expeditions Targeting Air, Land, and Sea”

Nasa.gov Feature “Probing the Hazy Mysteries of Marine Clouds”

Spatially coordinated airborne data and complementary products for aerosol, gas, cloud, and meteorological studies: the NASA ACTIVATE dataset

From GCMD Science Keywords:

CLOUD DROPLET DISTRIBUTION
CLOUDS
AEROSOLS

Data Distribution

File Format(s):

ICARTT

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Spatial Information

Spatial Coverage: (S: 25, N: 50), (W: -85, E: -58.5)
Spatial Coverage Type: Horizontal Vertical
Coordinate System: Cartesian
Granule Spatial Representation: Cartesian

Locations

UNITED STATES OF AMERICA NORTH AMERICA NORTHERN HEMISPHERE WESTERN HEMISPHERE ATLANTIC OCEAN NORTH ATLANTIC OCEAN BERMUDA TROPOSPHERE

Temporal Information

Temporal Coverage: 2020-02-14 - 2022-06-30

Platforms

Jet

HU-25A

Dassault HU-25A Guardian

AMS

AEROSOL MASS SPECTROMETER

LASER SPECTROMETER

CPC

Cloud Particle Counter

TSI-3563 Neph

TSI-3563 Nephelometer

PSAP

3-Wavelength Particle Soot Absorption Photometer Manufactured by Radiance Research

SMPS

Scanning Mobility Particle Sizer

CAS

Cloud and Aerosol Spectrometer

CDP

Cloud Droplet Probe

FCDP

FAST CLOUD DROPLET PROBE (FCDP)

2DS

2D-STEREO PARTICLE PROBE (2DS)

GAS SENSORS

DLH

Diode Laser Hygrometer developed by NASA LaRC

CRDS

Cavity Ring-Down Spectroscopy

Applanix

Applanix POSAV

GPS

Global Positioning System

HYGROMETERS

PRESSURE TRANSDUCERS

PITOT-STATIC SYSTEM

Metadata Dates

Created on 2021-05-12

Last updated on 2024-04-23