ASDC | TRACE-A_AircraftRemoteSensing_DC8_DIAL_Data

TRACE-A Level 2

Entry Title: TRACE-A DC-8 Remotely Sensed Differential Absorption Lidar (DIAL) Data

Entry ID: TRACE-A_AircraftRemoteSensing_DC8_DIAL_Data_1

Aerosols Tropospheric Composition

Description

TRACE-A_AircraftRemoteSensing_DC8_DIAL_Data is the remotely sensed Differential Absorption Lidar (DIAL) data collected onboard the DC-8 aircraft during the Transport and Atmospheric Chemistry near the Equator - Atlantic (TRACE-A) suborbital campaign. Data collection for this product is complete.

The TRACE-A mission was a part of NASA’s Global Tropospheric Experiment (GTE) – an assemblage of missions conducted from 1983-2001 with various research goals and objectives. TRACE-A was conducted in the Atlantic from September 21 to October 24, 1992. TRACE-A had the objective of determining the cause and source of the high concentrations of ozone that accumulated over the Atlantic Ocean between southern Africa and South America from August to October. NASA partnered with the Brazilian Space Agency (INPE) to accomplish this goal.

The NASA DC-8 aircraft and ozonesondes were utilized during TRACE-A to collect the necessary data. The DC-8 was equipped with 19 instruments. A few instruments on the DC-8 include the Differential Absorption Lidar (DIAL), the Laser-Induced Fluorescence, the O3-NO Ethylene/Forward Scattering Spectrometer, the Modified Licor, and the DACOM IR Laser Spectrometer. The DIAL was responsible for a variety of measurements, which include Nadir IR aerosols, Nadir UV aerosols, Zenith IR aerosols, Zenith VS aerosols, ozone, and ozone column. The Laser-Induced Fluorescence instrument collected measurements on NxOy in the atmosphere. Measurements of ozone were recorded by the O3-NO Ethylene/Forward Scattering Spectrometer while the Modified Licor recorded CO2. Finally, the DACOM IR Laser Spectrometer gathered an assortment of data points, including CO, O3, N2O, CH4, and CO2. Ozonesondes played a role in data collection for TRACE-A along with the DC-8 aircraft. The sondes were dropped from the DC-8 aircraft in order to gather data on ozone, temperature, and atmospheric pressure.

DOI

10.5067/ASDC/SUBORBITAL/TRACE-A/AircraftRemoteSensing_DC8_DIAL_Data_1

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GENERAL DOCUMENTATION

GTE Data Format

PUBLICATIONS

NASA GTE TRACE A Experiment (September-October 1992): Overview

From GCMD Science Keywords:

ATMOSPHERIC OZONE > OXYGEN COMPOUNDS
AEROSOLS
TROPOSPHERIC OZONE
OZONE PROFILES > ATMOSPHERIC OZONE > OXYGEN COMPOUNDS
LIDAR BACKSCATTER

Data Distribution

File Format(s):

.tra

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Spatial Information

Spatial Coverage: (S: -37.99, N: 35.7), (W: -119.98, E: 39.56)
Spatial Coverage Type: Horizontal Vertical
Coordinate System: Cartesian
Granule Spatial Representation: Cartesian

Locations

WESTERN HEMISPHERE SOUTHERN HEMISPHERE SOUTH ATLANTIC OCEAN BRAZIL TROPOSPHERE

Temporal Information

Temporal Coverage: 1992-09-22 - 1992-10-28

Platforms

Jet

NASA DC-8

NASA Douglas DC-8

DIAL

Differential Absorption Lidar

Metadata Dates

Created on 2023-12-07

Last updated on 2024-04-18