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... > Instruments > Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Spectrometers > CLAES

Preferred term

CLAES  

Definition

  • The Space Shuttle Discovery carrying UARS was launched on September 12, 1991 from Kennedy Space Flight Center. UARS was released to orbit on September 15, 1991, and the Cryogenic Limb Array Etalon Spectrometer (CLAES) began scientific observations of the earth's upper atmosphere October 1, 1991. The CLAES experiment measures temperature profiles, and concentrations of ozone, methane, water vapor, nitrogen oxides, and other important species, including CFCs, in the stratosphere. CLAES also maps the horizontal and vertical distributions of aerosols in the stratosphere. These measurements are analyzed to better understand the photochemical, radiative, and dynamical processes taking place in the ozone layer. CLAES measures ozone (O3) and the following stratospheric gases: 1) Source Species * Nitrous oxide (N2O)-produced in soils and oceans * Fluorocarbon-11 (CFCl3)-refrigerants, foaming agents * Fluorocarbon-12 (CF2Cl2)-refrigerants, foaming agents * Methane (CH4)-biogenic processes * Water vapor (H2O) 2) Ozone-Destructive Species * Nitric oxide (NO) * Nitrogen dioxide (NO2) 3) Reservoir and Sink Species * Nitric acid (HNO3) * Chlorine nitrate (ClONO2) * Dinitrogen pentoxide (N2O5) * Hydrogen cloride (HCl) Carbon Dioxide (CO2) emissions are measured and used to deduce temperature and pressure. Aerosol absorption coefficients are also derived. CLAES Science Objectives ------------------------ CLAES produced a 19-month global database showing the vertical distributions of important ozone-layer gases in the stratosphere and their variation with time of day, season, latitude, and longitude. With the other UARS instruments, these data are contributing to a better understanding of the processes that control ozone depletion in the middle and northern latitudes, including volcanic effects, as well as the seasonal development and breakup of the Antarctic ozone hole. IDN_Node: USA/NASA Group: Instrument_Details Entry_ID: CLAES Group: Instrument_Identification Instrument_Category: Earth Remote Sensing Instruments Instrument_Class: Passive Remote Sensing Instrument_Type: Spectrometers/Radiometers Instrument_Subtype: Spectrometers Short_Name: CLAES Long_Name: Cryogenic Limb Array Etalon Spectrometer End_Group Group: Instrument_Associated_Sensors Short_Name: CLAES End_Group Group: Associated_Platforms Short_Name: UARS End_Group Group: Spectral_Frequency_Information Wavelength_Keyword: Infrared > Reflected Spectral_Frequency_Coverage_Range: 3.5 μm to 12.9 μm End_Group Online_Resource: http://disc.sci.gsfc.nasa.gov/UARS/documents/claes Creation_Date: 2007-05-10 Group: Instrument_Logistics Data_Rate: 1300 measurement sets per day Instrument_Start_Date: 1991-10-01 Instrument_Stop_Date: 1993-05-05 Instrument_Owner: NASA End_Group End_Group (en)

Broader concept

Change note

  • 2016-01-08 13:40:33.0 [epneff] updated URLs update Definition (The Space Shuttle Discovery carrying UARS was launched on September 12, 1991 from Kennedy Space Flight Center. UARS was released to orbit on September 15, 1991, and the Cryogenic Limb Array Etalon Spectrometer (CLAES) began scientific observations of the earth's upper atmosphere October 1, 1991. The CLAES experiment measures temperature profiles, and concentrations of ozone, methane, water vapor, nitrogen oxides, and other important species, including CFCs, in the stratosphere. CLAES also maps the horizontal and vertical distributions of aerosols in the stratosphere. These measurements are analyzed to better understand the photochemical, radiative, and dynamical processes taking place in the ozone layer. CLAES measures ozone (O3) and the following stratospheric gases: 1) Source Species * Nitrous oxide (N2O)-produced in soils and oceans * Fluorocarbon-11 (CFCl3)-refrigerants, foaming agents * Fluorocarbon-12 (CF2Cl2)-refrigerants, foaming agents * Methane (CH4)-biogenic processes * Water vapor (H2O) 2) Ozone-Destructive Species * Nitric oxide (NO) * Nitrogen dioxide (NO2) 3) Reservoir and Sink Species * Nitric acid (HNO3) * Chlorine nitrate (ClONO2) * Dinitrogen pentoxide (N2O5) * Hydrogen cloride (HCl) Carbon Dioxide (CO2) emissions are measured and used to deduce temperature and pressure. Aerosol absorption coefficients are also derived. CLAES Science Objectives ------------------------ CLAES produced a 19-month global database showing the vertical distributions of important ozone-layer gases in the stratosphere and their variation with time of day, season, latitude, and longitude. With the other UARS instruments, these data are contributing to a better understanding of the processes that control ozone depletion in the middle and northern latitudes, including volcanic effects, as well as the seasonal development and breakup of the Antarctic ozone hole. IDN_Node: USA/NASA Group: Instrument_Details Entry_ID: CLAES Group: Instrument_Identification Instrument_Category: Earth Remote Sensing Instruments Instrument_Class: Passive Remote Sensing Instrument_Type: Spectrometers/Radiometers Instrument_Subtype: Spectrometers Short_Name: CLAES Long_Name: Cryogenic Limb Array Etalon Spectrometer End_Group Group: Instrument_Associated_Sensors Short_Name: CLAES End_Group Group: Associated_Platforms Short_Name: UARS End_Group Group: Spectral_Frequency_Information Wavelength_Keyword: Infrared > Reflected Spectral_Frequency_Coverage_Range: 3.5 μm to 12.9 μm End_Group Online_Resource: http://disc.sci.gsfc.nasa.gov/UARS/documents/claes Creation_Date: 2007-05-10 Group: Instrument_Logistics Data_Rate: 1300 measurement sets per day Instrument_Start_Date: 1991-10-01 Instrument_Stop_Date: 1993-05-05 Instrument_Owner: NASA End_Group End_Group);

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https://gcmd.earthdata.nasa.gov/kms/concept/4456d205-404e-48c0-8fe8-5e3eaf5ecfea

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