ASDC | CPEXAW-HALO_DC8

CPEX-AW Level 2

Entry Title: CPEX-AW HALO Aerosol and Water Vapor Profiles and Images

Entry ID: CPEXAW-HALO_DC8_1

Aerosols Clouds

Description

CPEXAW-HALO_DC8 is the High Altitude Lidar Observatory (HALO) image and h5 data files collected during the Convective Processes Experiment - Aerosols & Winds (CPEX-AW) onboard the DC-8 aircraft. Data collection for this product is complete.

The Convective Processes Experiment – Aerosols & Winds (CPEX-AW) campaign was a joint effort between the US National Aeronautics and Space Administration (NASA) and the European Space Agency (ESA) with the primary goal of conducting a post-launch calibration and validation activities of the Atmospheric Dynamics Mission-Aeolus (ADM-AEOLUS) Earth observation wind Lidar satellite in St. Croix. CPEX-AW is a follow-on to the Convective Processes Experiment (CPEX) field campaign which took place in the summer of 2017. In addition to joint calibration/validation of ADM-AEOLUS, CPEX-AW studied the dynamics related to the Saharan Air Layer, African Easterly Waves and Jets, Tropical Easterly Jet, and deep convection in the InterTropical Convergence Zone (ITCZ). CPEX-AW science goals include:

• Better understanding interactions of convective cloud systems and tropospheric winds as part of the joint NASA-ESA Aeolus Cal/Val effort over the tropical Atlantic;

• Observing the vertical structure and variability of the marine boundary layer in relation to initiation and lifecycle of the convective cloud systems, convective processes (e.g., cold pools), and environmental conditions within and across the ITCZ;

• Investigating how the African easterly waves and dry air and dust associated with Sahara Air Layer control the convectively suppressed and active periods of the ITCZ;

• Investigating interactions of wind, aerosol, clouds, and precipitation and effects on long range dust transport and air quality over the western Atlantic.

In order to successfully achieve the objectives of the campaign, NASA deployed its DC-8 aircraft equipped with an Airborne Third Generation Precipitation Radar (APR-3), Doppler Aerosol WiNd Lidar (DAWN), High Altitude Lidar Observatory (HALO), High Altitude Monolithic Microwave Integrated Circuit (MMIC) Sounding Radiometer (HAMSR), and dropsondes. This campaign aims to provide useful material to atmospheric scientists, meteorologists, lidar experts, air quality experts, professors, and students. The Atmospheric Science Data Center (ASDC) archives the dropsonde, HALO, and DAWN data products for CPEX-AW. For additional datasets please visit the Global Hydrometeorology Resource Center (GHRC).

DOI

10.5067/ASDC/SUBORBITAL/CPEXAW-HALO_DC8_1

Citation Styles for this Dataset

Resources and Documentation

Earthdata Forum

PROJECT HOME PAGE

CPEX-AW Project Overview

CPEX-AW Data Access on Earthdata

VIEW RELATED INFORMATION

DATA CITATION GUIDELINES

How to Cite ASDC Data

GENERAL DOCUMENTATION

CPEX-AW Support Documentation Page
Earth Observatory Overview of the HALO Airborne Sensor
HALO Instrument Overview Presentation

PUBLICATIONS

Airborne Lidar Observations of Water Vapor Profiles and Planetary Boundary Layer Heights - Prospects for Future SmallSat Missions

Airborne Lidar Observations of Water Vapor Profiles and Planetary Boundary Layer Heights with the NASA High Altitude Lidar Observatory (HALO)

Airborne Lidar Observations of Water Vapor, Methane, and Aerosol/Cloud Profiles with the High Altitude Lidar Observatory

Differential absorption lidar measurements of water vapor by the High Altitude Lidar Observatory (HALO): retrieval framework and first results

From GCMD Science Keywords:

ALTITUDE
AEROSOL OPTICAL DEPTH/THICKNESS
LIDAR DEPOLARIZATION RATIO
RELATIVE HUMIDITY > HUMIDITY > WATER VAPOR INDICATORS
AEROSOLS
ATMOSPHERIC WATER VAPOR
AEROSOL BACKSCATTER
LIDAR BACKSCATTER
CLOUD PROPERTIES
ATMOSPHERIC PRESSURE
AEROSOL EXTINCTION
WATER VAPOR PROFILES
SPECIFIC HUMIDITY > HUMIDITY > WATER VAPOR INDICATORS
ANGSTROM EXPONENT > AEROSOL OPTICAL DEPTH/THICKNESS
ATMOSPHERIC TEMPERATURE
AEROSOL PARTICLE PROPERTIES
WATER VAPOR MIXING RATIO PROFILES > WATER VAPOR PROFILES
CLOUD TOP HEIGHT > CLOUD PROPERTIES

Aerosol Backscatter
Aerosol Extinction
Aerosol Optical Depth/Thickness
Aerosol Particle Properties
Angstrom Exponents
Planetary Boundary Layer Height
Water Vapor Mixing Ratio Profiles

Data Distribution

File Format(s):

HDF5 , PNG

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Spatial Information

Spatial Coverage: (S: 11.86, N: 34.24), (W: -80.78, E: -45.64)
Spatial Coverage Type: Horizontal Vertical
Coordinate System: Cartesian
Granule Spatial Representation: Cartesian

Locations

CARIBBEAN SEA CARIBBEAN VIRGIN ISLANDS

Temporal Information

Temporal Coverage: 2021-08-20 - 2021-09-04

Platforms

Jet

NASA DC-8

NASA Douglas DC-8

HALO

High Altitude Lidar Observatory

Metadata Dates

Created on 2022-03-22

Last updated on 2024-09-10