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Atmospheric Chemistry of Combustion Emissions Near the Tropopause
Atmospheric Composition
- 3
- view all deployment datesDeployments
1999-09-03 1999-10-08 1999-03-25 1999-04-24 2000-09-01 2000-09-15 - 3
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- Data Products
The Campaign
The Atmospheric Chemistry of Combustion Emissions Near the Tropopause (ACCENT) was a multi-agency field investigation focused on the atmospheric chemistry effects caused by aircraft and rocket emissions. ACCENT included three deployments based in Houston, Texas, during the boreal spring and fall from 1999 to 2000. The NASA WB-57 aircraft was equipped with multiple instruments to measure aerosols and trace gases in the upper troposphere and lower stratosphere. ACCENT was supported by NASA’s Atmospheric Effects of Aircraft Program (AEAP) and the United States Air Force’s Rocket Impacts on Stratospheric Ozone (RISO) program.
ACCENT-II
1999-03-25 — 2000-09-15
Southern United States
boreal fall, boreal spring
N: 40°N
S: 20°N
W: 120°W
E: 80°W
no campaign DOI available
- ESPO Data Archive for ACCENT
- EOS Article on the ACCENT Campaign
Additional Notes
Repositories
other NASA repository not formally considered a DAAC by ESDS
AIRCRAFT EMISSIONS
ROCKET EMISSIONS
COMBUSTION EMISSIONS
OZONE
OZONE CHEMISTRY
METHANE
AEROSOLS
TRACE GASES
UPPER ATMOSPHERIC CHEMISTRY
ATMOSPHERIC CHEMISTRY
UPPER TROPOSPHERE
LOWER STRATOSPHERE
Slide 1 of 6
Campaign Field Sites
Stationary
68 Campaigns · 162 Instruments
The Composition and Photodissociative Flux Measurement (CPFM) is an in situ airborne spectroradiometer used for the measurement of direct and scattered solar irradiance. It is based on a holographic, diffraction grating, and a 1024-element photodiode array detector. It measures the solar flux on a horizontal surface and the limb and apparent brightness below the flight level. CPFM operates in the 300-770 nm wavelength range. CPFM has also been used for ground-based measurements.
Earth Science > Atmosphere > Atmospheric Radiation > Solar Irradiance
Earth Science > Atmosphere > Atmospheric Radiation
Campaign Balloons
81 Campaigns · 23 Instruments
Radiosondes are a balloon-borne instrument package used to collect profile measurements of pressure, temperature, humidity, and winds. These sensors are connected to a radio transmitter that sends the measurements to a ground receiver typically operating in the 400-406 MHz range. They typically provide measurements at 1-6 seconds, depending on the type and manufacturer of the radiosonde. Radiosondes are used for weather forecasting, ground truth satellite data, atmospheric research, and input for weather prediction models.
Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Profiles
Earth Science > Atmosphere > Atmospheric Winds > Wind Profiles
Earth Science > Atmosphere > Atmospheric Temperature
Earth Science > Atmosphere > Atmospheric Water Vapor
Earth Science > Atmosphere > Atmospheric Pressure
Earth Science > Atmosphere > Atmospheric Temperature > Upper Air Temperature > Vertical Profiles
Earth Science > Atmosphere > Atmospheric Pressure > Atmospheric Pressure Measurements
Earth Science > Atmosphere > Atmospheric Temperature > Upper Air Temperature
Earth Science > Atmosphere > Atmospheric Winds
The NOAA Frost Point Hygrometer (FPH) is a balloon-borne sensor that collects profile measurements of atmospheric water vapor. It employs the chilled-mirror principle to determine the frost or dew point temperature up to 28 km in the atmosphere. FPH takes measurements with a vertical resolution of 5-10 m and a temporal resolution of 1-2 seconds.
Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Profiles
Earth Science > Atmosphere > Atmospheric Water Vapor
Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Dew Point Temperature
NASA WB-57
16 Campaigns · 80 Instruments
The Microwave Temperature Profiler (MTP) is an airborne microwave radiometer developed by the Jet Propulsion Laboratory and later modified by NCAR. It measures brightness temperature from oxygen molecules at 56.363 GHz, 57.612 GHz, and 58.363 GHz. These measurements are converted into air temperature through a statistical retrieval process. It samples across 10 viewing angles and has a vertical resolution of 150 m near the aircraft. MTP provides profiles every 17 seconds with about 4 km of horizontal spacing.
Earth Science > Spectral/engineering > Microwave > Brightness Temperature
The NOAA Chemical Ionization Mass Spectrometer (NOAA-CIMS) is an in situ airborne spectrometer developed by NOAA. It was designed to provide high-precision measurements of reactive nitrogen and halogen species such as nitric acid, nitric oxide, and bromine chloride in the upper atmosphere. It can also provide measurements of ozone and water vapor concentrations. NOAA-CIMS has a detection limit of 30 pptv and a temporal resolution of 1 second.
Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Water Vapor
Earth Science > Atmosphere > Atmospheric Chemistry > Nitrogen Compounds > Nitric Acid
Earth Science > Atmosphere > Atmospheric Chemistry > Nitrogen Compounds > Nitric Oxide
Earth Science > Atmosphere > Atmospheric Chemistry
Earth Science > Atmosphere > Atmospheric Chemistry > Nitrogen Compounds
Earth Science > Atmosphere > Atmospheric Chemistry > Oxygen Compounds > Ozone
Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens
Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens > Chlorine Nitrate
Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens > Bromine Monoxide
The NOAA Pressure and Temperature (NOAA PT) is an in situ airborne probe that measures atmospheric pressure and temperature. It comprises a digital pressure temperature transducer and slow and fast responding temperature probes. NOAA PT provides measurements of both static and ram pressure and upper air temperature every second. It has an accuracy of 0.5 degrees for temperature and 0.5 mbars for pressure.
Earth Science > Atmosphere > Atmospheric Pressure
Earth Science > Atmosphere > Atmospheric Temperature
Earth Science > Atmosphere > Atmospheric Pressure > Static Pressure
Earth Science > Atmosphere > Atmospheric Temperature > Upper Air Temperature
Generic-Chemistry Related Sensors (Gen-Chemistry) refers to non-specific instruments on a platform used for atmospheric chemistry measurements. These are typically in situ analyzers that measure various chemical compounds such as trace gases, halocarbons, volatile organic compounds, nitrates, aerosols, and other chemical species. Measurements can include mixing ratio, composition, particle size, optical properties, and particle size distribution.
Earth Science > Atmosphere > Atmospheric Chemistry > Trace Gases/trace Species
Earth Science > Atmosphere > Atmospheric Chemistry
Earth Science > Atmosphere > Air Quality > Volatile Organic Compounds
Earth Science > Atmosphere > Aerosols
Earth Science > Atmosphere > Aerosols > Aerosol Particle Properties
Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens
Earth Science > Atmosphere > Air Quality
Earth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds
Generic-Atmospheric State (Gen-AtmsState) refers to non-specific instruments on a platform used for measurements of atmospheric state parameters. These are typically in situ sensors that measure temperature, pressure, humidity, and wind speed/direction. Types of atmospheric state instruments include thermometers, hygrometers, barometers, and anemometers.
Earth Science > Atmosphere > Atmospheric Water Vapor
Earth Science > Atmosphere > Atmospheric Pressure
Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Humidity
Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Air Temperature
Earth Science > Atmosphere > Atmospheric Winds > Upper Level Winds > Wind Direction
Earth Science > Atmosphere > Atmospheric Winds > Upper Level Winds > Wind Speed
Earth Science > Atmosphere > Atmospheric Pressure > Atmospheric Pressure Measurements
Earth Science > Atmosphere > Atmospheric Winds > Surface Winds > Wind Direction
Earth Science > Atmosphere > Atmospheric Temperature
Earth Science > Atmosphere > Atmospheric Winds > Surface Winds > Wind Speed
Earth Science > Atmosphere > Atmospheric Winds
The Lightweight Airborne Chromatograph Experiment (LACE) is an in situ balloon-borne, three-channel gas chromatograph. It was designed to operate on the Observations of the Middle Stratosphere (OMS) balloon gondola. It provides profile measurements of various gas species up to 32 km with a vertical resolution of 300 m. LACE measures halon-1211, chlorofluorocarbons, nitrous oxide, and sulfur hexafluoride every 70 seconds. It measures methyl chloroform, carbon tetrachloride, hydrogen, methane, and carbon monoxide every 140 seconds.
Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens > Carbon Tetrachloride
Earth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds > Methane
Earth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds > Carbon Monoxide
Earth Science > Atmosphere > Atmospheric Chemistry > Nitrogen Compounds > Nitrous Oxide
Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens > Chlorofluorocarbons
Earth Science > Atmosphere > Atmospheric Chemistry > Hydrogen Compounds > Molecular Hydrogen
Earth Science > Atmosphere > Atmospheric Chemistry
Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens
The NOAA CH4 is an in situ airborne near-infrared tunable diode laser (TDL) absorption spectrometer. The laser is tuned to the methane (CH4) absorption line at 1.653 μm and measures the intensity of the transmitted radiation. The CH4 concentration is then determined using the Beer-Lambert law. NOAA CH4 scans continuously over the CH4 absorption at a rate of 0.25 to 0.5 kHz and has a typical integration time of 2 seconds.
Earth Science > Atmosphere > Atmospheric Chemistry
Earth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds > Methane
The Multiple-Angle Aerosol Spectrometer Probe (MASP) is an in situ airborne spectrometer. It measures the light intensity of scatter aerosol particles at 780 nm wavelength across multiple angles to determine particle size and concentration. It can detect particles within the 0.3 to 20 micron size range. MASP typically has a time resolution of 10 seconds.
Earth Science > Atmosphere > Clouds > Cloud Microphysics > Particle Size Distribution
Earth Science > Atmosphere > Aerosols
Earth Science > Atmosphere > Aerosols > Aerosol Extinction
Earth Science > Atmosphere > Aerosols > Aerosol Particle Properties
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.
Earth Science > Atmosphere > Atmospheric Chemistry > Trace Gases/trace Species
Earth Science > Atmosphere > Atmospheric Chemistry
The Focused Cavity Aerosol Spectrometer (FCAS) is an in situ airborne optical particle counter developed by Particle Measuring Systems, Inc. FCAS detects light scattered by individual aerosol particles to determine their size distribution. It can detect aerosol particles ranging from 0.06 to 2 μm in size and operate at altitudes up to 20 km. Typically, FCAS provides measurements every 10 seconds.
Earth Science > Atmosphere > Aerosols
Earth Science > Atmosphere > Aerosols > Aerosol Particle Properties
The Particle Analysis by Laser Mass Spectrometry (PALMS) is a laser ionization mass spectrometer operated by NOAA. PALMS provides in situ measurements of aerosol particles and their chemical composition by using a UV laser pulse (193 nm) to generate ions. These ions are then analyzed with a time-of-flight mass spectrometer to produce the mass spectrum of each particle, which can be used to classify individual aerosol particles. PALMS has an aerosol size range of 0.2 to 3 microns and typically collects data at about 1 to 10 Hz. It can be used for either airborne or laboratory aerosol measurements.
Earth Science > Atmosphere > Aerosols > Chemical Composition
Earth Science > Atmosphere > Aerosols
The Whole Air Sampler (WAS) is an airborne in-situ instrument that collects air samples for analyzing trace gases, such as nonmethane hydrocarbons (NMHCs), halocarbons, alkyl nitrates, and various sulfur compounds found in the troposphere. Air samples collected by the WAS are then analyzed using gas chromatography and mass spectrometry to identify the gases present. The WAS collects samples every minute, allowing scientists to get a clear picture of the environment's chemical composition as research aircraft pass through.
Earth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds > Non-methane Hydrocarbons/volatile Organic Compounds
Earth Science > Atmosphere > Atmospheric Chemistry > Sulfur Compounds > Dimethyl Sulfide
Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens > Halocarbons
Earth Science > Atmosphere > Atmospheric Chemistry > Sulfur Compounds > Carbonyl Sulfide
Earth Science > Atmosphere > Aerosols > Nitrate Particles
Earth Science > Atmosphere > Atmospheric Chemistry > Trace Gases/trace Species
Earth Science > Atmosphere > Atmospheric Chemistry
Earth Science > Atmosphere > Atmospheric Chemistry > Sulfur Compounds
Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens
Earth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds
The Condensation Nuclei Counter (CNC) is optical method for
counting atmospheric aerosol particles.
Earth Science > >
The NOAA Dual-Beam UV-Absorption Ozone Photometer (NOAA-O3) is an in situ optical balloon-borne and airborne instrument that measures ozone concentrations in the troposphere and lower stratosphere. It operates at a wavelength of 254 nm, enabling it to calculate ozone number density due to the precise ozone absorption cross section at that wavelength. It has a sampling rate of 2 Hz and a horizontal resolution of 100 to 200 meters during typical research flights.
Earth Science > Atmosphere > Air Quality > Tropospheric Ozone
Earth Science > Atmosphere > Atmospheric Chemistry > Oxygen Compounds > Ozone
Earth Science > Atmosphere > Air Quality
Earth Science > Atmosphere > Atmospheric Chemistry
The Nucleation-mode Aerosol Size Spectrometer (NMASS) is an airborne, in situ spectrometer used to measure particle size distribution and cloud condensation nuclei (CCN). NMASS includes five parallel condensation nucleus counters (CNCs) that sample particles within the 3 to 60 nm diameter range. It can be mounted on various types of aircraft and is ideal for sampling cirrus clouds in the upper atmosphere. NMASS delivers rapid measurements with a temporal resolution of 10 Hz.
Earth Science > Atmosphere > Clouds > Cloud Microphysics > Particle Size Distribution
Earth Science > Atmosphere > Clouds > Cloud Microphysics > Cloud Condensation Nuclei
Earth Science > Atmosphere > Clouds > Cloud Microphysics
Earth Science > Atmosphere > Clouds
Earth Science > Atmosphere > Aerosols
Earth Science > Atmosphere > Aerosols > Aerosol Particle Properties
The JPL Laser Hygrometer (JLH) is an in situ airborne hygrometer developed at the Jet Propulsion Laboratory (JPL). It uses a tunable diode laser operating at 1.37 μm to measure atmospheric water vapor in the upper troposphere and lower stratosphere. JLH has a minimum spatial resolution of 25 meters and a detection range of 1 to 500 ppmv. It typically samples at 1 Hz and can provide measurements with a precision of 0.05 ppmv.
Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Water Vapor
Earth Science > Atmosphere > Atmospheric Water Vapor
The NOAA Frost Point Hygrometer (FPH) is a balloon-borne sensor that collects profile measurements of atmospheric water vapor. It employs the chilled-mirror principle to determine the frost or dew point temperature up to 28 km in the atmosphere. FPH takes measurements with a vertical resolution of 5-10 m and a temporal resolution of 1-2 seconds.
Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Profiles
Earth Science > Atmosphere > Atmospheric Water Vapor
Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Dew Point Temperature
NOx/NOxy is an in situ chemiluminescence instrument that measures nitrogen oxides and ozone in the atmosphere. It offers a spatial resolution better than 100 meters at typical DC-8 research flight speeds. NOx/NOxy can be used on ground-based, airborne, and shipborne platforms, enabling it to support various atmospheric chemistry and air quality studies.
Earth Science > Atmosphere > Atmospheric Chemistry > Nitrogen Compounds > Nitrogen Oxides
Earth Science > Atmosphere > Atmospheric Chemistry > Nitrogen Compounds > Nitrogen Dioxide
Earth Science > Atmosphere > Atmospheric Chemistry > Nitrogen Compounds > Nitric Oxide
Earth Science > Atmosphere > Atmospheric Chemistry > Oxygen Compounds > Ozone
Earth Science > Atmosphere > Atmospheric Chemistry > Nitrogen Compounds
Earth Science > Atmosphere > Atmospheric Chemistry
Earth Science > Atmosphere > Air Quality > Nitrogen Oxides
The PSI Ozone Dual-Beam UV-Absorption Photometer is an in situ airborne photometer manufactured by Physical Sciences, Inc. (PSI). It uses dual-beam absorption at 254 nm to detect ozone concentrations. It operates similarly to the NOAA Ozone photometer but with improved thermal stability, lower power consumption, and smaller flow rate. PSI Ozone has a typical data rate of 1 Hz and a detection sensitivity of 1 ppb at sea level
Earth Science > Atmosphere > Atmospheric Chemistry
Earth Science > Atmosphere > Atmospheric Chemistry > Oxygen Compounds > Ozone
The Non-dispersed Infrared Airborne CO2 Detector (NIRAD) was an in situ airborne spectrometer used to measure carbon dioxide (CO2). It consisted of three systems: a CO2 detector, a power and data acquisition system, and a gas-handling pump. The CO2 detector was first flown in 1999 as part of the CORE+ instrument package. It had a measurement sampling rate of 10 Hz. NIRAD is a retired instrument and was last flown in 2006.
Earth Science > Atmosphere > Atmospheric Chemistry
Earth Science > Atmosphere > Atmospheric Chemistry > Trace Gases/trace Species
Earth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds > Carbon Dioxide
The Multiple Axis Resonance Fluorescence Chemical Conversion Detector for ClO and BrO (ClO/BrO) is an in situ airborne analyzer operated by Harvard University. It provides measurements of chlorine monoxide (ClO) and bromine monoxide (BrO) in the upper troposphere and lower stratosphere. ClO and BrO are converted to chlorine (Cl) and bromine (Br) through the addition of nitric oxide (NO) in the sample air. Cl and Br concentrations are detected through resonance scattering in the vacuum ultraviolet (119 nm) to determine ClO and BrO concentrations. ClO/BrO has a detection limit greater than 1 pptv.
Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens > Chlorine Monoxide
Earth Science > Atmosphere > Atmospheric Chemistry
Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens > Bromine Monoxide
Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens
The Composition and Photodissociative Flux Measurement (CPFM) is an in situ airborne spectroradiometer used for the measurement of direct and scattered solar irradiance. It is based on a holographic, diffraction grating, and a 1024-element photodiode array detector. It measures the solar flux on a horizontal surface and the limb and apparent brightness below the flight level. CPFM operates in the 300-770 nm wavelength range. CPFM has also been used for ground-based measurements.
Earth Science > Atmosphere > Atmospheric Radiation > Solar Irradiance
Earth Science > Atmosphere > Atmospheric Radiation
NASA WB-57
16 Campaigns · 80 Instruments
The Microwave Temperature Profiler (MTP) is an airborne microwave radiometer developed by the Jet Propulsion Laboratory and later modified by NCAR. It measures brightness temperature from oxygen molecules at 56.363 GHz, 57.612 GHz, and 58.363 GHz. These measurements are converted into air temperature through a statistical retrieval process. It samples across 10 viewing angles and has a vertical resolution of 150 m near the aircraft. MTP provides profiles every 17 seconds with about 4 km of horizontal spacing.
Earth Science > Spectral/engineering > Microwave > Brightness Temperature
The NOAA Pressure and Temperature (NOAA PT) is an in situ airborne probe that measures atmospheric pressure and temperature. It comprises a digital pressure temperature transducer and slow and fast responding temperature probes. NOAA PT provides measurements of both static and ram pressure and upper air temperature every second. It has an accuracy of 0.5 degrees for temperature and 0.5 mbars for pressure.
Earth Science > Atmosphere > Atmospheric Pressure
Earth Science > Atmosphere > Atmospheric Temperature
Earth Science > Atmosphere > Atmospheric Pressure > Static Pressure
Earth Science > Atmosphere > Atmospheric Temperature > Upper Air Temperature
Generic-Chemistry Related Sensors (Gen-Chemistry) refers to non-specific instruments on a platform used for atmospheric chemistry measurements. These are typically in situ analyzers that measure various chemical compounds such as trace gases, halocarbons, volatile organic compounds, nitrates, aerosols, and other chemical species. Measurements can include mixing ratio, composition, particle size, optical properties, and particle size distribution.
Earth Science > Atmosphere > Atmospheric Chemistry > Trace Gases/trace Species
Earth Science > Atmosphere > Atmospheric Chemistry
Earth Science > Atmosphere > Air Quality > Volatile Organic Compounds
Earth Science > Atmosphere > Aerosols
Earth Science > Atmosphere > Aerosols > Aerosol Particle Properties
Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens
Earth Science > Atmosphere > Air Quality
Earth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds
Generic-Atmospheric State (Gen-AtmsState) refers to non-specific instruments on a platform used for measurements of atmospheric state parameters. These are typically in situ sensors that measure temperature, pressure, humidity, and wind speed/direction. Types of atmospheric state instruments include thermometers, hygrometers, barometers, and anemometers.
Earth Science > Atmosphere > Atmospheric Water Vapor
Earth Science > Atmosphere > Atmospheric Pressure
Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Humidity
Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Air Temperature
Earth Science > Atmosphere > Atmospheric Winds > Upper Level Winds > Wind Direction
Earth Science > Atmosphere > Atmospheric Winds > Upper Level Winds > Wind Speed
Earth Science > Atmosphere > Atmospheric Pressure > Atmospheric Pressure Measurements
Earth Science > Atmosphere > Atmospheric Winds > Surface Winds > Wind Direction
Earth Science > Atmosphere > Atmospheric Temperature
Earth Science > Atmosphere > Atmospheric Winds > Surface Winds > Wind Speed
Earth Science > Atmosphere > Atmospheric Winds
The NOAA CH4 is an in situ airborne near-infrared tunable diode laser (TDL) absorption spectrometer. The laser is tuned to the methane (CH4) absorption line at 1.653 μm and measures the intensity of the transmitted radiation. The CH4 concentration is then determined using the Beer-Lambert law. NOAA CH4 scans continuously over the CH4 absorption at a rate of 0.25 to 0.5 kHz and has a typical integration time of 2 seconds.
Earth Science > Atmosphere > Atmospheric Chemistry
Earth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds > Methane
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.
Earth Science > Atmosphere > Atmospheric Chemistry > Trace Gases/trace Species
Earth Science > Atmosphere > Atmospheric Chemistry
The Focused Cavity Aerosol Spectrometer (FCAS) is an in situ airborne optical particle counter developed by Particle Measuring Systems, Inc. FCAS detects light scattered by individual aerosol particles to determine their size distribution. It can detect aerosol particles ranging from 0.06 to 2 μm in size and operate at altitudes up to 20 km. Typically, FCAS provides measurements every 10 seconds.
Earth Science > Atmosphere > Aerosols
Earth Science > Atmosphere > Aerosols > Aerosol Particle Properties
The Whole Air Sampler (WAS) is an airborne in-situ instrument that collects air samples for analyzing trace gases, such as nonmethane hydrocarbons (NMHCs), halocarbons, alkyl nitrates, and various sulfur compounds found in the troposphere. Air samples collected by the WAS are then analyzed using gas chromatography and mass spectrometry to identify the gases present. The WAS collects samples every minute, allowing scientists to get a clear picture of the environment's chemical composition as research aircraft pass through.
Earth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds > Non-methane Hydrocarbons/volatile Organic Compounds
Earth Science > Atmosphere > Atmospheric Chemistry > Sulfur Compounds > Dimethyl Sulfide
Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens > Halocarbons
Earth Science > Atmosphere > Atmospheric Chemistry > Sulfur Compounds > Carbonyl Sulfide
Earth Science > Atmosphere > Aerosols > Nitrate Particles
Earth Science > Atmosphere > Atmospheric Chemistry > Trace Gases/trace Species
Earth Science > Atmosphere > Atmospheric Chemistry
Earth Science > Atmosphere > Atmospheric Chemistry > Sulfur Compounds
Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens
Earth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds
The Condensation Nuclei Counter (CNC) is optical method for
counting atmospheric aerosol particles.
Earth Science > >
The NOAA Dual-Beam UV-Absorption Ozone Photometer (NOAA-O3) is an in situ optical balloon-borne and airborne instrument that measures ozone concentrations in the troposphere and lower stratosphere. It operates at a wavelength of 254 nm, enabling it to calculate ozone number density due to the precise ozone absorption cross section at that wavelength. It has a sampling rate of 2 Hz and a horizontal resolution of 100 to 200 meters during typical research flights.
Earth Science > Atmosphere > Air Quality > Tropospheric Ozone
Earth Science > Atmosphere > Atmospheric Chemistry > Oxygen Compounds > Ozone
Earth Science > Atmosphere > Air Quality
Earth Science > Atmosphere > Atmospheric Chemistry
The Nucleation-mode Aerosol Size Spectrometer (NMASS) is an airborne, in situ spectrometer used to measure particle size distribution and cloud condensation nuclei (CCN). NMASS includes five parallel condensation nucleus counters (CNCs) that sample particles within the 3 to 60 nm diameter range. It can be mounted on various types of aircraft and is ideal for sampling cirrus clouds in the upper atmosphere. NMASS delivers rapid measurements with a temporal resolution of 10 Hz.
Earth Science > Atmosphere > Clouds > Cloud Microphysics > Particle Size Distribution
Earth Science > Atmosphere > Clouds > Cloud Microphysics > Cloud Condensation Nuclei
Earth Science > Atmosphere > Clouds > Cloud Microphysics
Earth Science > Atmosphere > Clouds
Earth Science > Atmosphere > Aerosols
Earth Science > Atmosphere > Aerosols > Aerosol Particle Properties
The NOAA Frost Point Hygrometer (FPH) is a balloon-borne sensor that collects profile measurements of atmospheric water vapor. It employs the chilled-mirror principle to determine the frost or dew point temperature up to 28 km in the atmosphere. FPH takes measurements with a vertical resolution of 5-10 m and a temporal resolution of 1-2 seconds.
Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Profiles
Earth Science > Atmosphere > Atmospheric Water Vapor
Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Dew Point Temperature
The PSI Ozone Dual-Beam UV-Absorption Photometer is an in situ airborne photometer manufactured by Physical Sciences, Inc. (PSI). It uses dual-beam absorption at 254 nm to detect ozone concentrations. It operates similarly to the NOAA Ozone photometer but with improved thermal stability, lower power consumption, and smaller flow rate. PSI Ozone has a typical data rate of 1 Hz and a detection sensitivity of 1 ppb at sea level
Earth Science > Atmosphere > Atmospheric Chemistry
Earth Science > Atmosphere > Atmospheric Chemistry > Oxygen Compounds > Ozone
The Non-dispersed Infrared Airborne CO2 Detector (NIRAD) was an in situ airborne spectrometer used to measure carbon dioxide (CO2). It consisted of three systems: a CO2 detector, a power and data acquisition system, and a gas-handling pump. The CO2 detector was first flown in 1999 as part of the CORE+ instrument package. It had a measurement sampling rate of 10 Hz. NIRAD is a retired instrument and was last flown in 2006.
Earth Science > Atmosphere > Atmospheric Chemistry
Earth Science > Atmosphere > Atmospheric Chemistry > Trace Gases/trace Species
Earth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds > Carbon Dioxide
The Multiple Axis Resonance Fluorescence Chemical Conversion Detector for ClO and BrO (ClO/BrO) is an in situ airborne analyzer operated by Harvard University. It provides measurements of chlorine monoxide (ClO) and bromine monoxide (BrO) in the upper troposphere and lower stratosphere. ClO and BrO are converted to chlorine (Cl) and bromine (Br) through the addition of nitric oxide (NO) in the sample air. Cl and Br concentrations are detected through resonance scattering in the vacuum ultraviolet (119 nm) to determine ClO and BrO concentrations. ClO/BrO has a detection limit greater than 1 pptv.
Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens > Chlorine Monoxide
Earth Science > Atmosphere > Atmospheric Chemistry
Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens > Bromine Monoxide
Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens
Campaign Balloons
81 Campaigns · 23 Instruments
Radiosondes are a balloon-borne instrument package used to collect profile measurements of pressure, temperature, humidity, and winds. These sensors are connected to a radio transmitter that sends the measurements to a ground receiver typically operating in the 400-406 MHz range. They typically provide measurements at 1-6 seconds, depending on the type and manufacturer of the radiosonde. Radiosondes are used for weather forecasting, ground truth satellite data, atmospheric research, and input for weather prediction models.
Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Profiles
Earth Science > Atmosphere > Atmospheric Winds > Wind Profiles
Earth Science > Atmosphere > Atmospheric Temperature
Earth Science > Atmosphere > Atmospheric Water Vapor
Earth Science > Atmosphere > Atmospheric Pressure
Earth Science > Atmosphere > Atmospheric Temperature > Upper Air Temperature > Vertical Profiles
Earth Science > Atmosphere > Atmospheric Pressure > Atmospheric Pressure Measurements
Earth Science > Atmosphere > Atmospheric Temperature > Upper Air Temperature
Earth Science > Atmosphere > Atmospheric Winds
NASA WB-57
16 Campaigns · 80 Instruments
The Particle Analysis by Laser Mass Spectrometry (PALMS) is a laser ionization mass spectrometer operated by NOAA. PALMS provides in situ measurements of aerosol particles and their chemical composition by using a UV laser pulse (193 nm) to generate ions. These ions are then analyzed with a time-of-flight mass spectrometer to produce the mass spectrum of each particle, which can be used to classify individual aerosol particles. PALMS has an aerosol size range of 0.2 to 3 microns and typically collects data at about 1 to 10 Hz. It can be used for either airborne or laboratory aerosol measurements.
Earth Science > Atmosphere > Aerosols > Chemical Composition
Earth Science > Atmosphere > Aerosols
Generic-Atmospheric State (Gen-AtmsState) refers to non-specific instruments on a platform used for measurements of atmospheric state parameters. These are typically in situ sensors that measure temperature, pressure, humidity, and wind speed/direction. Types of atmospheric state instruments include thermometers, hygrometers, barometers, and anemometers.
Earth Science > Atmosphere > Atmospheric Water Vapor
Earth Science > Atmosphere > Atmospheric Pressure
Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Humidity
Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Air Temperature
Earth Science > Atmosphere > Atmospheric Winds > Upper Level Winds > Wind Direction
Earth Science > Atmosphere > Atmospheric Winds > Upper Level Winds > Wind Speed
Earth Science > Atmosphere > Atmospheric Pressure > Atmospheric Pressure Measurements
Earth Science > Atmosphere > Atmospheric Winds > Surface Winds > Wind Direction
Earth Science > Atmosphere > Atmospheric Temperature
Earth Science > Atmosphere > Atmospheric Winds > Surface Winds > Wind Speed
Earth Science > Atmosphere > Atmospheric Winds
The NOAA Dual-Beam UV-Absorption Ozone Photometer (NOAA-O3) is an in situ optical balloon-borne and airborne instrument that measures ozone concentrations in the troposphere and lower stratosphere. It operates at a wavelength of 254 nm, enabling it to calculate ozone number density due to the precise ozone absorption cross section at that wavelength. It has a sampling rate of 2 Hz and a horizontal resolution of 100 to 200 meters during typical research flights.
Earth Science > Atmosphere > Air Quality > Tropospheric Ozone
Earth Science > Atmosphere > Atmospheric Chemistry > Oxygen Compounds > Ozone
Earth Science > Atmosphere > Air Quality
Earth Science > Atmosphere > Atmospheric Chemistry
The NOAA Pressure and Temperature (NOAA PT) is an in situ airborne probe that measures atmospheric pressure and temperature. It comprises a digital pressure temperature transducer and slow and fast responding temperature probes. NOAA PT provides measurements of both static and ram pressure and upper air temperature every second. It has an accuracy of 0.5 degrees for temperature and 0.5 mbars for pressure.
Earth Science > Atmosphere > Atmospheric Pressure
Earth Science > Atmosphere > Atmospheric Temperature
Earth Science > Atmosphere > Atmospheric Pressure > Static Pressure
Earth Science > Atmosphere > Atmospheric Temperature > Upper Air Temperature
Events
3 Deployments
3 IOPs
1 Significant Event
NASA, USAF
NASA Atmospheric Effects of Aircraft Program, United States Air Force Rocket Impacts on Stratospheric Ozone Program
Currently unavailable
Randall R. Friedl, Martin N. Ross
Currently unavailable
other NASA repository not formally considered a DAAC by ESDS
NOAA, NSF, USAF
Currently unavailable