1 / 27

A U R A Satellite Mission

A U R A Satellite Mission. T E S. http://aura.gsfc.nasa.gov/images/106949main_aura_sc_blkbg-lg.jpg. What is TES?. Tropospheric Emission Spectrometer Measures simultaneous concentration of gasses in the atmosphere Ozone Carbon Monoxide Water Vapor.

razi
Download Presentation

A U R A Satellite Mission

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. A U R A Satellite Mission T E S http://aura.gsfc.nasa.gov/images/106949main_aura_sc_blkbg-lg.jpg

  2. What is TES? • Tropospheric Emission Spectrometer • Measures simultaneous concentration of gasses in the atmosphere • Ozone • Carbon Monoxide • Water Vapor http://tes.jpl.nasa.gov/images/home_WhatIsTESContent_th276.jpg

  3. Orbit and Coverage • Sun Synchronous Orbit • 438 miles above earth’s surface • Inclination of 98.21 degrees • Nadir Pointing and Limb Pointing http://www.heavens-above.com/orbitdisplay.asp?lat=0&lng=0&alt=0&loc=Unspecified&TZ=CET&satid=28376

  4. TES Measurements • Measure infrared radiances • Surface Temperature • Vertically resolved measure of atmospheric gasses • Ozone • Carbon Monoxide • Water Vapor • Nitric Acid • Special Observations • Air Pollution

  5. TES Functionality • Fourier Transform Infrared Spectrometer (FTIR) • Infrared emissions from gasses • Everything above absolute zero emits infrared energy at a certain wavelength • Makes a scan every 4 or 16 seconds • Spectral Resolution of 0.1cm-1 to .025cm-1 • Used to pinpoint wavelengths • Infrared absorption lines • Determines altitude of substance in atmosphere

  6. TES Functionality http://tes.jpl.nasa.gov/uploadedfiles/instrument_geometries.gif

  7. TES Data http://www.nasa.gov/centers/jpl/images/content/159454main_tes-20060925-browse.jpg

  8. Special Observations • Scheduled only during 9 or 10 orbit gaps • Conducted in 3 modes • Stare • Transect • Step-&-Stare • Depends on requirements

  9. 3 Special Observation Modes • Stare • Volcano monitoring • Biomass Burning • Industrial Accidents • Nadir Mode • Points to a target region of interest • Up to 4 minutes • Has to be in ±45 degrees in nadir direction

  10. 3 Special Observation Modes http://tes.jpl.nasa.gov/visualization/SCIENCE_PLOTS/R11/PNG_Files/run10269/run_10269_curtain_ret_O3.png

  11. 3 Special Observation Modes • Transect • Regional Pollution studies • Nadir Mode • Point at a set of contiguous areas • Covers up to 850 km http://tes.jpl.nasa.gov/images/transect_mode.gif

  12. 3 Special Observation Modes • Step-&-Stare • Nadir mode • Points in nadir for 4 seconds • Moves 39 km in orbit • Point again, move 35 km

  13. Step-&-Stare http://www.sjaa.net/eph/0812/tes_o3-co-transects.jpg

  14. Applications of TES • Determine atmospheric temperature and humidity profile • Local Surface Temperature • Local Surface reflectance and admittance

  15. Calibration • Sensitivity • Changes from time to time • Use average kernel for calibration • Degrees of Freedom

  16. A U R A Satellite Mission O M I

  17. What is OMI? • Ozone Monitoring Instrument http://www.dutchspace.nl/uploadedImages/Products_and_Services/Instruments/OMI/OMI_OPTICAL_BENCH_DM.JPG

  18. OMI Parameters

  19. OMI Heritage • OMI ESA Predecessors • GOME • SCIAMACHY • Introduced concept of measuring in full spectrum UV/VIS/near-IR wavelength with high spectral resolution • Allows retrieval of several trace gasses from same measurement http://envisat.esa.int/instruments/tour-index/hardware_img/x_Fmint01.jpg http://www.iup.uni-bremen.de/doas/images/gome2/gome-2_instrument.png

  20. OMI Heritage • American predecessor of OMI • NASA’s TOMS • Total Ozone Mapping Spectrometer • Used only 8 wavelength bands • Obtained ozone column • Had very small ground pixel size • 50 km x 50 km • Combo with daily global coverage http://suzaku.eorc.jaxa.jp/GLI2/adeos/Project/Toms.html

  21. OMI Advantage • Combines advantages of GOME SCIAMACHY and TOMS • Measures complete spectrum of UV/VIS/IR wavelengths • Range of high resolution • 13 km x 24 km and daily global coverage

  22. OMI Functionality • Nadir viewing imagery spectrometer • Uses hyperspectral viewing • Push broom like mode • Observes solar backscatter from atmosphere and surface • Uses wavelengths 270-500nm • 114 degree viewing angle • Allows 2600 km swath (Global Coverage) • Daily Global Average

  23. OMI Functionality • Global mode • Pixel size of 13 km x 24 km • Zoom Mode • Spatial resolution reduced • 13 km x 12 km • Enables OMI to look between clouds • Good for receiving tropospheric information • Does not allow for global coverage

  24. OMI Data Products http://www.volcano.si.edu/volcanoes/region08/ivm_arc/anatahan/3004ana1.jpg

  25. OMI Data Products http://toms.gsfc.nasa.gov/

  26. OMI Data Products www.knmi.nl/~veefkind/images.html

  27. References • NASA, . (2009). Ozone monitoring instrument. Retrieved from NASA,. (2009). Omi: ozone monitoring instrument. Retrieved from http://www.nasa.gov/mission_pages/aura/spacecraft/omi.html • KNMI, . (2008, December 16). Omi instrument summary. Retrieved from http://www.knmi.nl/omi/research/instrument/index.php • Jet Propulsion Laboratory, . (2009). Tropospheric emission spectrometer: orbit and coverage. Retrieved from http://tes.jpl.nasa.gov/instrument/orbitcoverage/ • Jet Propulsion Laboratory, . (2009). Tropospheric emission spectrometer: orbit and coverage. Retrieved from http://tes.jpl.nasa.gov/instrument/specialobservations/ • NASA, . (2009). What is Tes?. Retrieved from http://tes.jpl.nasa.gov/mission/whatistes/ • NASA, . (2009). Nasa instruments. Retrieved from http://aura.gsfc.nasa.gov/instruments/tes.html • NASA, (2009) Total Ozone Mapping Spectrometer. Ozone Processing Team. Retreivedfrom http://toms.gsfc.nasa.gov/

More Related