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Improvements of Synergetic Aerosol Retrieval for Envisat : Volume 8, Issue 24 (18/12/2008)

By Holzer-popp, T.

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Book Id: WPLBN0003979860
Format Type: PDF Article :
File Size: Pages 22
Reproduction Date: 2015

Title: Improvements of Synergetic Aerosol Retrieval for Envisat : Volume 8, Issue 24 (18/12/2008)  
Author: Holzer-popp, T.
Volume: Vol. 8, Issue 24
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2008
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Breitkreuz, H., Schroedter-Homscheidt, M., Martynenko, D., Holzer-Popp, T., & Klüser, L. (2008). Improvements of Synergetic Aerosol Retrieval for Envisat : Volume 8, Issue 24 (18/12/2008). Retrieved from http://ebooklibrary.org/


Description
Description: German Aerospace Center (DLR), German Remote Sensing Data Center (DFD), Oberpfaffenhofen, Germany. The synergetic aerosol retrieval method SYNAER (Holzer-Popp et al., 2002a) has been extended to the use of ENVISAT measurements. It exploits the complementary information of a radiometer and a spectrometer onboard one satellite platform to extract aerosol optical depth (AOD) and speciation (as a choice from a representative set of pre-defined mixtures of water-soluble, soot, mineral dust, and sea salt components). SYNAER consists of two retrieval steps. In the first step the radiometer is used for accurate cloud screening, and subsequently to quantify the aerosol optical depth (AOD) at 550 nm and spectral surface brightness through a dark field technique for different pre-defined aerosol mixtures. In the second step the spectrometer is applied to choose the most plausible aerosol mixture through a least square fit of the measured spectrum with simulated spectra using the mixture-dependent values of AOD and surface brightness retrieved in the first step. This method was developed and a first case study evaluation against few (15) multi-spectral ground-based AERONET sun photometer observations was conducted with a sensor pair (ATSR-2 and GOME) onboard ERS-2. Due to instrumental limitations the coverage of SYNAER/ERS-2 is very sparse. Therefore, SYNAER was transferred to similar sensors AATSR and SCIAMACHY onboard ENVISAT. While transferring to the new sensor pair significant improvements in the methodology were made based on a thorough evaluation of the methodology: (1) an update of the aerosol model, (2) improved cloud detection in the tropics and sub tropics, and (3) an enhanced dark field albedo characterization. This paper describes these improvements in detail and assesses their combined impact on the results. After a brief assessment of atmospheric noise impact on comparisons of pixel and station measurements a validation against ground-based measurements establishes error bars for the SYNAER/ENVISAT method version 2.0. A theoretical analysis of the information content with regard to aerosol composition (second retrieval step) is presented to quantify the potential and limitations of this new capability provided by the SYNAER method. Building on this analysis, first seasonal and monthly composition results calculated by applying SYNAER version 2.0 to AATSR and SCIAMACHY are shown to demonstrate the potential of the approach. An inter-comparison to earlier results of SYNAER version 1.0 is made for both the validation and the example datasets.

Summary
Improvements of synergetic aerosol retrieval for ENVISAT

Excerpt
% vor jede Referenz Breitkreuz, H., Schroedter-Homscheidt, M., and Holzer-Popp, T.: A case study to prepare for the utilization of aerosol forecasts in solar energy industries, Sol. Energy, 81, 1377–1385, 2007.; Claquin, T., Schulz, M., and Balkanski, Y. J.: Modelling the mineralogy of atmospheric dust sources, J. Geophys. Res., 104(D18), 22243–22356, 1999.; Deuzé, L., Bréon, F. M., and Devaux, C.: Remote sensing of aerosols over land surfaces from POLDER-ADEOS – 1 polarized measurements, J. Geophys. Res., 106(D5), 4913–4926, 2001.; Dubovik, O., Holben, B., Eck, T. F., Smirnov, A., Kaufman, Y. J., King, M. D., Tanre, D., and Slutsker, I.: Variability of Absorption and Optical Properties of Key Aerosol Types Observed in Worldwide Locations, J. Atmos. Sci., 59, 590–608, 2002.; Dunion, J. P. and Velden, C. S.: The impact of the Saharan Air Layer on Atlantic tropical cyclone activity, Bull. Am. Meteorol. Soc., 90, 353–365, 2004.; Evan, A. T., Heidinger, A. K., and Pavalonis, M. J.: Development of a new over-water Advanced Very High Resolution Radiometer dust detection algorithm, Int. J. Remote. Sens., 27, 3903–3924, 2006.; Hess, M., Koepke, P. , and Schult, I.: Optical properties of aerosols and clouds: The software package OPAC, Bull. Am. Meteorol. Soc., 79(5), 831–844, 1998.; Fan, X., Goloub, P., and Deuzé, J.-L.: Evaluation of PARASOL aerosol retrieval over North East Asia, Remote Sens. Environ., 112(3), 697–707, doi:10.1016/j.rse.2007.06.010, 2007.; Holzer-Popp, T., Schroedter, M., and Gesell, G.: Retrieving aerosol optical depth and type in the boundary layer over land and ocean from simultaneous GOME spectrometer and ATSR-2 radiometer measurements, 1, Method description, J. Geophys. Res., 107(D21), AAC16-1–AAC16-17, 2002a.; Holzer-Popp, T., Schroedter, M., and Gesell, G.: Retrieving aerosol optical depth and type in the boundary layer over land and ocean from simultaneous GOME spectrometer and ATSR-2 radiometer measurements, 2, Case study application and validation, J. Geophys. Res., 107(D24), AAC10-1–AAC10-8, 2002b.; World Climate Program (WCP): A Preliminary Cloudless Standard Atmosphere for Radiation Computation, WCP-112, WMO/TD No. 24, Boulder, 1986.; Holzer-Popp, T. and Schroedter-Homscheidt, M.: Satellite-based background concentration maps of different particle classes in the atmosphere, edited by: Brebbia, C. A., Air Pollution XIII, WIT Press, Southampton, 2004.; Hsu, N. C., Tsay, S.-C., King, M., and Herman, J. R.: Aerosol Properties Over Bright-Reflecting Source Regions, IEEE T. Geosci. Remote, 42(3), 557–569, 2004.; Huang, J., Minnis, P., Lin, B., Wang, T., Yi, Y., Hu, Y., Sun-Mack, S., and Ayers, K.: Possible influences of Asian dust aerosols on cloud properties and radiative forcing observed from MODIS and CERES, Geophys. Res. Lett., 33, L06824, doi:10.1029/2005GL024724, 2006.; Kahn, R. A., Gaitley, B. J., Martonchik, J. V., Diner, D. J., Crean, K. A., and Holben, B.: Multiangle Imaging Spectroradiometer (MISR) global aerosol optical depth validation based on 2 years of coincident Aerosol Robotic Network (AERONET) observations, J. Geophys. Res., 110, D10S04, doi:10.1029/2004JD004706, 2005.; Kaufman, Y. J. and Fraser, R. S.: The effect of smoke particles on clouds and climate forcing, Science, 277, 1636–1639, 1997.; Kaufman, Y. F., Tanré, D., and Remer, L. A.: Operational remote sensing of tropospheric aerosol over land from EOS Moderate Resolution Imaging Spectroradiometer, J. Geophys. Res., 102, 17051–17067, 1997.; Kaufman, Y. J., Tanre, D., and Boucher, O.: A satellite view of aerosols in the climate system, Nature, 419, 215–223, 2002.; Kokhanovsky, A. A., von Hoyningen-Huene, W., and Burrows, J. P.: Atmospheric aerosol load as derived from space, Atmos. Res., 81, 176–185, 2006.; Kokhanovsky, A. A., Bramstedt, K., von Hoyningen-Huene, W., and Burrows, J. P.: The intercomparison of top-of-atmosphere reflectivity measured by MERIS and SCIAMACHY in the spectral range of 443–865 nm, IEEE Trans. Geosci. Rem. Sens.

 

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