Remote Measurement Of Aerosol Optical Properties Using The Noaa Poes Avhrr And Goes Imager During Tarfox
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Remote Measurement Of Aerosol Optical Properties Using The Noaa Poes Avhrr And Goes Imager During Tarfox
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Author : Brian B. Brown
language : en
Publisher:
Release Date : 1997-06-01
Remote Measurement Of Aerosol Optical Properties Using The Noaa Poes Avhrr And Goes Imager During Tarfox written by Brian B. Brown and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997-06-01 with categories.
A radiative transfer algorithm in the solar wavelengths for the NOAA POES AVHRR and GOES Imager is proposed for the cloud-free, marine atmosphere. The algorithm combines linearized, single-scattering theory with an estimate of bi-directional surface reflectance. Phase functions are parameterized using an aerosol distribution model and the ratio of radiance values measured in channels 1 and 2 of the AVHRR. Retrieved satellite aerosol optical depth is compared to airborne sunphotometer data and derived values from particle size distributions collected during the Tropospheric Aerosol Radiative Forcing Observational Experiment (TARFOX) in July 1996. Error in the satellite derived values from the AVHRR originates in error in modeling aerosol size distributions, corresponding phase function parameterization and treatment of specular surface reflectance. Extension of the algorithm to the GOES Imager provided results consistent with the AVHRR.
Remote Measurement Of Aerosol Optical Properties Using The Noaa Poes Avhrr During Ace 1 Tarfox And Ace 2
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Author : Peter J. Smith
language : en
Publisher:
Release Date : 1998-12-01
Remote Measurement Of Aerosol Optical Properties Using The Noaa Poes Avhrr During Ace 1 Tarfox And Ace 2 written by Peter J. Smith and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-12-01 with categories.
A radiative transfer algorithm in the solar wavelengths for the NOAA POES AVHRR is presented for the cloud-free, marine atmosphere. This algorithm combines linearized, single-scattering theory with an estimate of bi-directional surface reflectance. Phase functions are parameterized using an aerosol distribution model and the ratio of radiance values measured in channels 1 and 2 of the AVHRR. Automated cloud screening and sun glint removal is included. Retrieved satellite aerosol optical depth (AOD) is compared to surface measured sunphotometer AOD collected during the International Global Atmospheric Chemistry (IGAC) Project's Second Aerosol Characterization Experiment (ACE-2) from June 16 to July 25, 1997. The comparison data set has a correlation coefficient of 0.88 with a standard error of 0.02 at both channel 1 and 2 wavelengths. Regional aerosol properties are examined with an emphasis on the differences between the ACE-1, TARFOX and ACE-2 regions. ACE-1 and ACE-2 regions have strong modes at AOD at around 0.1, but ACE-2 tails toward higher values consistent with urban and dust aerosol intrusion. The TARFOX region has a noticeable mode at AOD around 0.2, but has significant spread of AOD values consistent with the varied aerosol constituents in that area.
Curricula In The Atmospheric Oceanic Hydrologic And Related Sciences
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Author :
language : en
Publisher:
Release Date : 1998
Curricula In The Atmospheric Oceanic Hydrologic And Related Sciences written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Geophysics categories.
Aerosol Optical Depth Analysis With Noaa Goes And Poes In The Western Atlantic
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Author : Arunas P. Kuciauskas
language : en
Publisher:
Release Date : 2002-06-01
Aerosol Optical Depth Analysis With Noaa Goes And Poes In The Western Atlantic written by Arunas P. Kuciauskas and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002-06-01 with categories.
An aerosol optical depth retrieval algorithm in the visible wavelengths for the NOAA POES AVHRR and GOES-8 visible imager is presented for the cloud free, marine atmosphere. The algorithm combines linearized single- scatter theory with an estimate of surface reflectance. Phase functions are parameterized using an aerosol size distribution model and the ratio of radiance values measured in channels 1 and 2 of the AVHRR. Retrieved satellite aerosol optical depth (AOD) is compared to three land-based sun photometer stations located on islands in the western Atlantic during July and September, 2001. GOES-8 channel 1 (visible wavelength) radiance values were initially calibrated using techniques developed by Rao. Additional connections to the channel 1 GOES- 8 radiances were made by applying a linear offset factor obtained during the experimental time period through comparison with AVHRR radiances. The results for the GOES -derived AOD compare favorably to the AERONET-measured AOD values. For both NOAA and GOES data, the comparison dataset has a correlation coefficient of 0.67 with a standard error of 0.07. For higher AOD cases (d = 0. 25), the general trend was for the satellite-derived AOD values to underestimate AERONET-observed conditions. During these higher conditions, the scattering phase function pattern contained within the algorithm deviated from the expected pattern, especially between 1400 1800. Overall, the more accurate calculations of AOD occurred over scatter angles between 140 deg - 150 deg and 170 deg - 180 deg.
Aerosol Optical Depth Analysis With Noaa Goes And Poes In The Western Atlantic
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Author :
language : en
Publisher:
Release Date : 2006
Aerosol Optical Depth Analysis With Noaa Goes And Poes In The Western Atlantic written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
An aerosol optical depth retrieval algorithm in the visible wavelengths for the NOAA POES AVHRR and GOES-8 visible imager is presented for the cloud free, marine atmosphere. The algorithm combines linearized single-scatter theory with an estimate of surface reflectance. Phase functions are parameterized using an aerosol size distribution model and the ratio of radiance values measured in channels 1 and 2 of the AVHRR. Retrieved satellite aerosol optical depth (AOD) is compared to three land-based sun photometer stations located on islands in the western Atlantic during July and September, 2001. GOES-8 channel 1 (visible wavelength) radiance values were initially calibrated using techniques developed by Rao and Zhang (1999). Additional corrections to the channel 1 GOES-8 radiances were made by applying a linear offset factor obtained during the experimental time period through comparison with AVHRR radiances. The results for the GOES-derived AOD compare favorably to the Aerosol Robotic NETwork (AERONET) AOD values. For both NOAA and GOES data, the comparison dataset has a correlation coefficient of 0.67 with a standard error of 0.7. During dusty conditions with corresponding higher AOD levels greater than or equal to 0.25, the general trend was for the satellite-derived AOD values to underestimate AERONET AOD values. Within these conditions, the scattering phase function pattern deviated from the expected pattern, especially between the scattering angles of 140 degrees to 180 degrees. Overall, the more accurate calculations of AOD occurred over scatter angles between 140 degrees to 150 degrees and 170 degrees to 180 degrees.
Propagation And Imaging Through The Atmosphere
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Author :
language : en
Publisher:
Release Date : 1997
Propagation And Imaging Through The Atmosphere written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Aerosols categories.
Retrieval Of Aerosol Optical Depth From Noaa Avhrr
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Author : Adrian Berthold Hauser
language : en
Publisher:
Release Date : 2004
Retrieval Of Aerosol Optical Depth From Noaa Avhrr written by Adrian Berthold Hauser and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.
Measurements Of Aerosol Optical Properties Over The Ocean Using Sunphotometry And Lidar
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Author : Ellsworth Judd Welton
language : en
Publisher:
Release Date : 1998
Measurements Of Aerosol Optical Properties Over The Ocean Using Sunphotometry And Lidar written by Ellsworth Judd Welton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Aerosols categories.
Combining Remote Sensing And In Situ Aerosol Measurements For The Determination Of Aerosol Optical Properties And Radiative Effects
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Author : Jens Redemann
language : en
Publisher:
Release Date : 1999
Combining Remote Sensing And In Situ Aerosol Measurements For The Determination Of Aerosol Optical Properties And Radiative Effects written by Jens Redemann and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
Two Column Aerosol Project Tcap
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Author :
language : en
Publisher:
Release Date : 2016
Two Column Aerosol Project Tcap written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
The National Oceanic and Atmospheric Administration (NOAA) is preparing for the launch of the Geostationary Operational Environmental Satellite R-Series (GOES-R) satellite in 2015. This satellite will feature higher time (5-minute versus 30-minute sampling) and spatial resolution (0.5 km vs 1 km in the visible channel) than current GOES instruments provide. NOAA's National Environmental Satellite Data and Information Service has funded the Global Monitoring Division at the Earth System Research Laboratory to provide ground-based validation data for many of the new and old products the new GOES instruments will retrieve specifically related to radiation at the surface and aerosol and its extensive and intensive properties in the column. The Two-Column Aerosol Project (TCAP) had an emphasis on aerosol; therefore, we asked to be involved in this campaign to de-bug our new instrumentation and to provide a new capability that the U.S. Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Climate Research Facility's Mobile Facilities (AMF) did not possess, namely surface albedo measurement out to 1625 nm. This gave us a chance to test remote operation of our new multi-filter rotating shadowband radiometer/multi-filter radiometer (MFRSR/MFR) combination. We did not deploy standard broadband shortwave and longwave radiation instrumentation because ARM does this as part of every AMF deployment. As it turned out, the ARM standard MFRSR had issues, and we were able to provide the aerosol column data for the first 2 months of the campaign covering the summer flight phase of the deployment. Using these data, we were able to work with personnel at Pacific Northwest National Laboratory (PNNL) to retrieve not only aerosol optical depth (AOD), but single scattering albedo and asymmetry parameter, as well.