ASDC | TRACE-A_Merge_Data

TRACE-A Level 3

Entry Title: TRACE-A Merge Data

Entry ID: TRACE-A_Merge_Data_1

Aerosols

Description

TRACE-A_Merge_Data is merge data files created from 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/Merge_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:

HYDROGEN PEROXIDE > OXYGEN COMPOUNDS
CFC-11 > CHLOROFLUOROCARBONS > HALOCARBONS AND HALOGENS
STATIC PRESSURE
ATMOSPHERIC PRESSURE MEASUREMENTS
STATIC TEMPERATURE > SURFACE TEMPERATURE
ATMOSPHERIC NITRIC ACID > NITROGEN COMPOUNDS
FLIGHT LEVEL WINDS > UPPER LEVEL WINDS
TRACE GASES/TRACE SPECIES
AIRSPEED/GROUND SPEED
WIND SPEED > SURFACE WINDS
CARBON TETRACHLORIDE > HALOCARBONS AND HALOGENS
SATURATION VAPOR PRESSURE > WATER VAPOR INDICATORS
METHANE > CARBON AND HYDROCARBON COMPOUNDS
NITROGEN OXIDES > NITROGEN COMPOUNDS
ATMOSPHERIC CARBON DIOXIDE > CARBON AND HYDROCARBON COMPOUNDS
FORMALDEHYDE > CARBON AND HYDROCARBON COMPOUNDS
RELATIVE HUMIDITY > HUMIDITY > WATER VAPOR INDICATORS
WIND DIRECTION > SURFACE WINDS
ETHANE > CARBON AND HYDROCARBON COMPOUNDS
ATMOSPHERIC CARBON MONOXIDE > CARBON AND HYDROCARBON COMPOUNDS
ATMOSPHERIC OZONE > OXYGEN COMPOUNDS
AEROSOL SIZE DISTRIBUTION > AEROSOL PARTICLE PROPERTIES
CFC-12 > CHLOROFLUOROCARBONS > HALOCARBONS AND HALOGENS
NITROUS OXIDE > NITROGEN COMPOUNDS

Data Distribution

File Format(s):

GTE

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Spatial Information

Spatial Coverage: (S: -59.98, N: 43.575), (W: -180, E: 58.68)
Spatial Coverage Type: Horizontal Vertical
Coordinate System: Cartesian
Granule Spatial Representation: Cartesian

Locations

WESTERN HEMISPHERE SOUTHERN HEMISPHERE BRAZIL SOUTH ATLANTIC OCEAN TROPOSPHERE

Temporal Information

Temporal Coverage: 1990-03-13 - 1992-11-02

Platforms

Models

Data Analysis

Metadata Dates

Created on 2023-12-07

Last updated on 2024-08-23