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Instrument

TDLAS
Tunable Diode Laser Absorption Spectrometer

A Tunable Diode Laser Absorption Spectrometer (TDLAS) is an in situ optical spectrometer used either on aircraft or on the ground. TDLAS detects the wavelength-dependent absorption of light to measure the concentrations of various trace gases. It can also identify the gas species' temperature, pressure, velocity, and mass flux when applicable. TDLAS typically has a time resolution of 1 second.

NASA's DC-8 flying laboratory passes Antarctica's tallest peak, Mount Vinson, on Oct. 22, 2012, during a flight over the continent to measure changes in the massive ice sheet and sea ice. Credit: NASA/Michael Studinger (Photography courtesy NASA Images)

Overview

Instrument Details

Optical/Photon
Earth Science > Atmosphere > Atmospheric Chemistry > Trace Gases/trace Species
Earth Science > Atmosphere > Atmospheric Chemistry
Troposphere
1 s
Point
N/A
https://doi.org/10.1029/2002JD002872External Link

Instrument Operation

IPHEx

Integrated Precipitation and Hydrology Experiment

2014
Southern Appalachians, including portions of North Carolina, South Carolina, Tennessee, Georgia
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1 Deployment
· 47 Data Products
RADEX

Radar Definition Experiment

2014—2015
Southeastern United States, North Carolina (NC); Olympic Peninsula, Washington (WA) State
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2 Deployments
· 30 Data Products
CRYSTAL-FACE logo converted to .png
CRYSTAL-FACE

Cirrus Regional Study of Tropical Anvils and Cirrus Layers Florida Area Cirrus Experiment

2002
Southern Florida
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1 Deployment
· 1 Data Product
INTEX-NA

Intercontinental Chemical Transport Experiment - North America

2004—2006
North America, Gulf of Mexico, North Pacific Ocean, North Atlantic Ocean
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2 Deployments
· 21 Data Products
NAMMA

NASA African Monsoon Multidisciplinary Analyses

2006
Cape Verde Islands, Atlantic Ocean
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1 Deployment
· 23 Data Products
ARCTAS

Arctic Research of the Composition of the Troposphere from Aircraft and Satellites

2008
Alaska, Western Canada, California
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3 Deployments
· 27 Data Products
TRACE

Transport and Atmospheric Chemistry near the Equator

1992—2001
Brazil, Southern Africa, Tropical Atlantic, Central & Western Regions of the Pacific Ocean Basin
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2 Deployments
· 0 Data Products
PEM

Pacific Exploratory Mission

1991—1999
Pacific Ocean
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4 Deployments
· 0 Data Products
MILAGRO

Megacity Initiative: Local and Global Research Observations

2006
Mexico City Metropolitan Area
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1 Deployment
· 0 Data Products
CITE

Global Tropospheric Experiment - Chemical Instrument Test and Evaluation

1983—1989
Wallops Island, Hawaii, Central Pacific, California, Eastern Pacific Ocean, North Atlantic
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5 Deployments
· 0 Data Products
BOREAS

Boreal Ecosystem-Atmosphere Study

1994—1996
Boreal forests of central Canada
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2 Deployments
· 303 Data Products
PAC2001

Pacific 2001 Air Quality Study

2001
Lower Fraser Valley, British Columbia, Canada
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1 Deployment
· 8 Data Products
MILAGRO

Megacity Initiative: Local and Global Research Observations

2006
Mexico City Metropolitan Area
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1 Deployment
· 0 Data Products
PEM

Pacific Exploratory Mission

1991—1999
Pacific Ocean
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4 Deployments
· 0 Data Products
TRACE

Transport and Atmospheric Chemistry near the Equator

1992—2001
Brazil, Southern Africa, Tropical Atlantic, Central & Western Regions of the Pacific Ocean Basin
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2 Deployments
· 0 Data Products
INTEX-NA

Intercontinental Chemical Transport Experiment - North America

2004—2006
North America, Gulf of Mexico, North Pacific Ocean, North Atlantic Ocean
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2 Deployments
· 21 Data Products
MILAGRO

Megacity Initiative: Local and Global Research Observations

2006
Mexico City Metropolitan Area
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1 Deployment
· 0 Data Products
ACCENT

Atmospheric Chemistry of Combustion Emissions Near the Tropopause

1999—2000
Southern United States
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3 Deployments
· 0 Data Products

Data Products

Filter data products from this instrument by specific campaigns, platforms, or formats.

Campaigns
CAMPAIGNS
Platforms
PLATFORMS
http://dx.doi.org/10.5067/NAMMA/CVI/DATA201External Link
Douglas DC-8
10.3334/ORNLDAAC/514External Link
Douglas DC-8
Douglas DC-8