National Aeronautics and Space Administration Jet Propulsion Laboratory
National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Tropospheric Emission Spectrometer TES STM 2013 TES Data User Session Vivienne Payne, John Worden, Susan Kulawik, Ming Luo, Robert Herman, and the TES science Team Jet Propulsion Laboratory/California Institute of Technology Copyright 2013 California Institute of Technology. Government sponsorship acknowledged.
Tropospheric Emission Spectrometer National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology TES Nadir-View Radiances CH 3 OH CO 2 H 2 O NH 3 HCOOH N 2 O PAN O 3 OCS HDO CO CH 4 TES measures spectrally resolved radiance at 0. 06 cm-1 spectral resolution from 650 – 2300 cm-1 over a 5 x 8 km footprint There are many different chemical constituents that are active in this region important for hydrology, climate, pollution, and other processes. 2
National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Tropospheric Emission Spectrometer Overview of TES products V 005 (fully processed dataset): – O 3, CO, H 2 O and HDO, CO 2, CH 4, NH 3, Temperature – Cloud optical depth, Cloud top pressure V 006 (starting spring, 2013, complete dataset in 2014): HCOOH, CH 3 OH (Karen Cady-Pereira) TES + OMI O 3 (Dejian Fu) TES + MLS CO (Ming Luo) Prototyping: PAN (Vivienne Payne), OCS (Le Kuai) Contact Information: Ozone and HDO (John Worden: john. worden@jpl. nasa. gov) CH 4 and N 2 O (Vivienne Payne: Vivienne. H. Payne@jpl. nasa. gov) TATM and H 2 O (Robert Herman: Robert. Herman@jpl. nasa. gov) CO (Ming Luo: Ming. luo@jpl. nasa. gov) NH 3 (Karen Cady-Pereira: kcadyper@aer. com) CO 2 (Susan Kulawik: susan. kulawik@jpl. nasa. gov) (not at meeting)
National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Core Product Useful Range Level 1 B Radiances Temperature O 3 CO N/A Tropospheric Emission Spectrometer TES Nadir Data Products Estimated Bias & Accuracy * comparisons with SHIS and AIRS: 290 -295 K range: Bias <0. 3 K and Std <0. 3 K. 265 -270 K range: Bias <0. 5 K, and Std ~0. 5 K 10 h. Pa to surface bias <0. 6 K in lower trop, <0. 5 K in upper trop and stratosphere Stddev 1. 5 K in lower trop, 1 K in upper trop and stratosphere 10 h. Pa to surface Nadir: (nadir) 3 -10 ppb high bias for nadir in 10 to 300 h. Pa troposphere (limb) 7 -16 ppb upper limit rms with expected value for individual profile expected to be much smaller 100 h. Pa to surface Vertical Res. Validation papers N/A Shephard et al. , 2007; Connor et al. , 2011 1 km in lower trop; ~3 km at the tropopause (100 h. Pa) 4 -6 km in nadir TES validation document 5 -10% global averaged low bias 6 km in nadir (15 -20% rms) compared to MOPITT. Slightly lower in midlat and slightly higher in tropics compared to in-situ data with 10 -20% variability. Worden et al. , 2007; Nassar et al. , 2008; Richards et al. , 2008; Osterman et al. , 2008 Boxe et al. , 2010 Luo et al. , 2007 a, b; Lopez et al. , 2008; Ho et al. , 2009
National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Tropospheric Emission Spectrometer TES R 12 Nadir Data Products Core Product Useful Range Estimated Bias & Accuracy * Vertical Res. H 2 O 200 h. Pa to surface Lower troposphere (moist): Bias: <5%, Std: , ~20 % Upper troposphere (dry) Bias: ~15%, Std: ~40%* *Important: TES statistics are NOT weighted by layer amounts 2 km in lower Shephard et al. , trop. 2008 ~4 km in the Worden et al. , 2012 upper trop. (200 h. Pa); HDO 400 h. Pa to 850 HDO/H 2 O biased 5% high by 5% h. Pa with a total expected error of 1. 5% CH 4 700 h. Pa up to tropoopause (peak 500 h. Pa) Sea Surface N/A Temperatur e Cloud Top Pres. Cloud Eff. optical depth N/A 20 to 900 h. Pa 6 km Validation papers Worden et al. , 2006; Worden et al. , 2013 Worden et al. , 2012 Wecht et al. , 2012 1% high bias with N 2 O correction 1 -2% Stddev N/A Compared to AMSR-E: 0. 15 -0. 3 K low bias (night) 0. 2 -0. 4 K low bias (day). 0. 5 -0. 8 K Std Dev both night and day 30 -200 h. Pa depending on radiance noise, mean bias 50 h. Pa limited sensitivity at optical depths less than 0. 2 N/A TES validation documents N/A Eldering et al. , 2008
National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Tropospheric Emission Spectrometer New Products for V 6 (12/10) Core Product Useful Range Estimated Bias & Accuracy * ~30% Vertical Res. Validation papers Ammonia Lower troposphere / PBL ~3 km Beer et al. , GRL 2007; Shephard et al. , 2011 CO 2 Middle Troposphere (peak 500 h. Pa) 6 ppm single observation monthly average precision 1. 2 ppm N/A Kulawik et al. , ACP 2010 Kulawik et al. , ACPD 2013 Worden et al. , Nature Geo 2008; Ozone Infrared Radiation Forcing Kernels For calculating instantaneous ozone radiative forcing N/A CH 3 OH Lower troposphere N/A OMI + TES O 3 Lower troposphere through top of the atmosphere MLS + TES CO Surface to mesosphere, with improvements over TES/MLS in UTLS surface to 700 h. Pa: bias 9. 71%, prec. 26. 06%; 700 -100 h. Pa: bias 6. 45%, precision 11. 72% similar to TES in trop and MLS in strat/meso 4 -5 km similar to TES in trop and MLS in strat/meso Cady-Pereira et al. , 2012 Fu et al. , 2013 (in ACP by 3/28/2013) Lu et al. , 2013 (TES + MLS CO, in preparation)
National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Tropospheric Emission Spectrometer TES Nadir Observations TES Footprint 5 x 8 km Global Survey footprints ~180 km apart Every 2 days Step & Stare footprints ~45 km apart Special observation Stare 0 km apart Special observation Transect footprints ~12 km apart Special observation
National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Tropospheric Emission Spectrometer Visualization of TES Special Observations http: //tesweb. jpl. nasa. gov/visualization/ -> Level 2 and Level 3 -> monthly plots Does TES see that big Indonesian fire in Oct, 2006? ? 8
National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Tropospheric Emission Spectrometer Visualization of TES time trends http: //tesweb. jpl. nasa. gov/visualization/ -> Level 2 and Level 3 -> Time Trends When does the CO signal peak? ? What is ozone doing? 9
National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Tropospheric Emission Spectrometer TES data calendar http: //tesweb. jpl. nasa. gov/datacalendar/ -> 2006 Runs 5047, 5055, 5066, 5077, 5088, 5095, . . . What data did TES take during that time? 10
National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Tropospheric Emission Spectrometer Getting data from the ASDC ftp: //l 4 ftl 01. larc. nasa. gov/TES/TL 2 CON. 005/ etc. . . Download all *. he 5 files How do I get the data? (1) 11
National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Tropospheric Emission Spectrometer TES subsetter: http: //asdc. larc. nasa. gov/search/tes/ User registration (to send you link to data via email) Select fields, locations, times HDF files are subsetted to your request, link set via email How do I get the data? (2) 12
National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Tropospheric Emission Spectrometer TES lite products: http: //tes. jpl. nasa. gov/data/ ->Lite Products • Scripts to download all data, or select a few months • Data grouped into files by month, no averaging • Results on a subset of pressures (different for each product) How do I get the data? (or. . . 3)
National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Tropospheric Emission Spectrometer Getting started TES documents web page: http: //tes. jpl. nasa. gov/documents/ Lite products user’s guide: http: //avdc. gsfc. nasa. gov/index. php? site=635564035&id=10 TES Quick Start Guide: versions out of date but useful overview http: //tes. jpl. nasa. gov/uploadedfiles/TESQuick. Start. Guide. htm TES Data User’s Guide v 5. 0: http: //tes. jpl. nasa. gov/uploadedfiles/TES_L 2_Data_Users_Guide-3. pdf Examples of how to use TES data http: //tes. jpl. nasa. gov/uploadedfiles/Kulawik. Example. Use. TESdata. pdf L 2 Data Readers (in IDL) available at the Langley ASDC How do I use the data?
National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Tropospheric Emission Spectrometer Summary of how to get TES Data >>Level 2 products on a common 66 -level pressure grid<< • All versions of TES data available here: - https: //wist. echo. nasa. gov/api/ • Langley ASDC data pool. Current TES data version (v 005) - http: //eosweb. larc. nasa. gov/PRODOCS/tes/table_tes. html - when we start delivering v 006, v 005 may no longer appear here • Lite products (currently at AVDC) new users start here - on a subset of pressures, which varies by product, in netcdf - files group data by month (no averaging is applied) - http: //tesweb. jpl. nasa. gov/data/ follow link to “Lite Products” • TES subsetter tool new users start here - http: //asdc. larc. nasa. gov/search/tes/ - Can specify latitudes, longitudes, dates, and fields to include
National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Start Date/ First Run ID Scans Tropospheric Emission Spectrometer Global Survey Summary Latitude range Sequences TES nadir Profiles/run Along-Track spacing 1152 sequences 80 S – 80 N 1152 ~544 km (72 per orbit) Data gap 3/30/2005 – 5/21/2005 1152 May 21, 2005 sequences 3 Nadir 80 S-80 N 3456 ~182 km Run ID 2931 (72 per orbit) January 10, 1136 2006 sequences 3 Nadir 80 S-80 N 3408 ~182 km Run ID 3239. (71 per orbit) 960 June 6, 2008 sequences 3 Nadir 60 S-80 N 2880 ~182 km Run ID 7370. (60 per orbit) 768 July 30, 2008 sequences 3 Nadir 50 S-70 N 2304 ~182 km Run ID 8187. (48 per orbit) Data gap: 12/22/2009 through 3/3/2010, continuous GS start 4/27/2010 April 27, 2010 512 4 Nadir 30 S-50 N 2048 50 -164 km Run ID 11151 sequences Sep 20, 2004 Run ID 2147 3 Limb/ 2 Nadir (averaged) Regular GS’s stop 7/15/2011 16
National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Tropospheric Emission Spectrometer Example of Using TES data: Comparison to an ozone-sonde Comparisons between TES data and other data must account for variability of sensitivity with altitude and the a priori constraint used to regularize the retrieval Apply TES Averaging Kernel (included in products) and a priori constraint vector to sonde profile to remove effect of vertical resolution and a priori bias on comparison Boxe et al. , ACP 2010 The Averaging Kernel describes the sensitivity of the TES estimate to the true state
National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Tropospheric Emission Spectrometer Suggested Papers see: tes. jpl. nasa. gov/publications Papers on assimilation of TES data into models and estimation of model state parameters Nassar, R. , D. B. A. Jones, S. S. Kulawik, J. R. Worden, K. W. Bowman, R. J. Andres, P. Suntharalingam, J. M. Chen, C. A. M. Brenninkmeijer, T. J. Schuck, T. J. Conway, D. E. Worthy, Inverse modeling of CO 2 sources and sinks using satellite observations of CO 2 from TES and surface flask measurements, Atmospheric Chemistry and Physics, 11, 4263– 4311, 2011, doi: 10. 5194/acp-11 -6029 -2011, June 24, 2011. Parrington, M. , D. B. A. Jones, K. W. Bowman, A. M. Thompson, D. W. Tarasick, J. Merrill, S. J. Oltmans, T. Leblanc, J C. Witte, and D. B. Millet, Impact of the assimilation of ozone from the Tropospheric Emission Spectrometer on surface ozone across North America, Geophys. Res. Lett. , 36, L 04802, doi: 10. 1029/2008 GL 036935, 2009. Kopacz, M. , D. J. Jacob, J. A. Fisher, J. A. Logan, L. Zhang, I. A. Megretskaia, R. M. Yantosca, K. Singh, D. K. Henze, J. P. Burrows, M. Buchwitz, I. Khlystova, W. W. Mc. Millan, J. C. Gille, D. P. Edwards, A. Eldering, V. Thouret, and P. Nedelec, Global estimates of CO sources with high resolution by adjoint inversion of multiple satellite datasets (MOPITT, AIRS, SCIAMACHY, TES), Jones, D. B. A. , K. W. Bowman, J. A. Logan, C. L. Heald, J. Liu, M. Luo, J. Worden, and J. Drummond, The zonal structure of the tropical O 3 and CO as observed by the Tropospheric Emission Spectrometer in November 2004 �Part 1: Inverse modeling of CO emissions, Atmospheric Chemistry and Physics, Volume 9, Number 11, Page(s) 3547 -3562, June 3, 2009.
National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Tropospheric Emission Spectrometer List of publications with TES found here: tes. jpl. nasa. gov/publications
National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Tropospheric Emission Spectrometer Thanks for your attention! Questions? Ozone and HDO (John Worden: john. worden@jpl. nasa. gov) CH 4, N 2 O, PAN (Vivienne Payne: Vivienne. H. Payne@jpl. nasa. gov) TATM and H 2 O (Robert Herman: Robert. Herman@jpl. nasa. gov) CO (Ming Luo: Ming. luo@jpl. nasa. gov) NH 3, HCOOH, CH 3 OH (Karen Cady-Pereira: kcadyper@aer. com) CO 2 (Susan Kulawik: susan. kulawik@jpl. nasa. gov) (not at meeting) OMI/TES Ozone (Dejian Fu: dejian. fu@jpl. nasa. gov) Spectroscopy (Matt Alvarado or Vivienne Payne) IRK (Helen Worden or Kevin Bowman) Lite products (Susan Kulawik)
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