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Influence of the prescribed solar spectrum on calculations of atmospheric temperature

Wenyi Zhong, Scott M. Osprey, Lesley J. Gray, Joanna D. Haigh
2008 Geophysical Research Letters  
The effects of the changes in the spectrum, and the broad-band scheme, on the temperatures simulated by a middle atmosphere GCM are investigated.  ...  1] Significant differences in heating rates are found when two solar irradiance spectra are used in a line-by-line radiative transfer code.  ...  This work was supported by the UK Natural Environment Research Council consortium project SOLCLI.  ... 
doi:10.1029/2008gl035993 fatcat:uxwwyyldufgxvi4ywr3u224uxi

Information in the Reflected Light Spectra of Widely Separated Giant Exoplanets [article]

Renyu Hu
2019 arXiv   pre-print
This newly identified phenomenon causes a strong sensitivity of the cloud top pressure on the internal heat flux.  ...  Using the model, we find that the mixing ratio of methane and the cloud top pressure of a giant exoplanet can be uniquely determined from a single observation of its reflected light spectrum at wavelengths  ...  The spectra between 600 and 1000 nm contain information on the compositions and cloud structures in the atmospheres of giant planets in the Solar System.  ... 
arXiv:1911.06274v1 fatcat:mnsyhure2vg4fl2ax5al4m2xyu

Retrieval of land surface albedo from satellite observations: a simulation study

Shunlin Liang, A. Strahler, C. Walthall
1998 IGARSS '98. Sensing and Managing the Environment. 1998 IEEE International Geoscience and Remote Sensing. Symposium Proceedings. (Cat. No.98CH36174)  
A new approach of predicting broadband surface inherent albedos from MODIS or MISR top of atmosphere (TOA) narrowband albedos using a neural network is proposed.  ...  In this paper the authors separate the apparent surface albedo from the inherent surface albedo, which is independent of atmospheric conditions, based on extensive radiative transfer simulations under  ...  Frank Evans for providing the SHDOM code and other generous assistance. The authors are also grateful to Dr. J. Salisbury for providing surface spectra measurement data, and Drs.  ... 
doi:10.1109/igarss.1998.691379 fatcat:cgwv6lhhc5e7dmcfn4ps2te7kq

Retrieval of Land Surface Albedo from Satellite Observations: A Simulation Study

Shunlin Liang, Alan H. Strahler, Charles Walthall
1999 Journal of applied meteorology (1988)  
A new approach of predicting broadband surface inherent albedos from MODIS or MISR top of atmosphere (TOA) narrowband albedos using a neural network is proposed.  ...  In this paper the authors separate the apparent surface albedo from the inherent surface albedo, which is independent of atmospheric conditions, based on extensive radiative transfer simulations under  ...  Frank Evans for providing the SHDOM code and other generous assistance. The authors are also grateful to Dr. J. Salisbury for providing surface spectra measurement data, and Drs.  ... 
doi:10.1175/1520-0450(1999)038<0712:rolsaf>2.0.co;2 fatcat:r5zamyezonfjlhhadmzs4db2mu

Detection of water stress in orchard trees with a high-resolution spectrometer through chlorophyll fluorescence in-filling of the O/sub 2/-A band

O. Perez-Priego, P.J. Zarco-Tejada, J.R. Miller, G. Sepulcre-Canto, E. Fereres
2005 IEEE Transactions on Geoscience and Remote Sensing  
Spectral measurements of downwelling irradiance and upwelling crown radiance were conducted with the narrow-band spectrometer, enabling the canopy reflectance to be obtained at subnanometer spectral resolution  ...  and permitting the evaluation of the fluorescence in-filling effects on reflectance in trees under water stress conditions.  ...  Calculation of reflectance in the (e), (f), red edge spectral region from (a), (b) irradiance and (c), (d) vegetation radiance spectra.  ... 
doi:10.1109/tgrs.2005.857906 fatcat:qyads3w64ncvlhskbwkkgq2eli

Filling in of Fraunhofer lines by plant fluorescence: Simulations for a nadir-viewing satellite-borne instrument

Christopher E. Sioris, Grégory Bazalgette Courrèges-Lacoste, Marc-Philippe Stoll
2003 Journal of Geophysical Research  
1] Solar-excited plant fluorescence in the red/near-infrared is known to fill Fraunhofer lines at ground level.  ...  Thus, similarly to RRS, plant fluorescence can be remotely sensed from an orbiting spectrometer, and may impact the retrieval of atmospheric trace gases such as water vapor by high-resolution spectroscopy  ...  The authors would like to acknowledge I. Moya (Université de Paris-Sud) for providing the fluorescence irradiance data from the Goulas thesis and C.  ... 
doi:10.1029/2001jd001321 fatcat:jzzfp2vttjdovgdoznopwabaea

Reflectance-based calibration of SeaWiFS II Conversion to radiance

Robert A. Barnes, Edward F. Zalewski
2003 Applied Optics  
measurements by knowledge of the solar irradiance.  ...  Finally, this process requires changes of 4% or less for the reflectance calibration coefficients to provide consistency among the radiance calibration, the reflectance calibration, and the solar irradiance  ...  state of the art in solar irradiance spectra, and it is the preferred model for the radiance calculations in Sections 4 -7.  ... 
doi:10.1364/ao.42.001648 pmid:12665095 fatcat:nwxzwvz4hvag7oy3gw2ra44t3u

Note on rotational-Raman scattering in the O2 A- and B-bands

A. Vasilkov, J. Joiner, R. Spurr
2013 Atmospheric Measurement Techniques  
</strong> Quantifying the impact of rotational-Raman scattering (RRS) on the O<sub>2</sub> A- and B-bands is important as these bands can be used for cloud and aerosol characterization for trace-gas retrievals  ...  We show that the filling-in effects of RRS are relatively small, but not negligible, in these O<sub>2</sub> absorption bands, particularly for high-spectral-resolution instruments.  ...  Funding for this work was provided by the NASA Carbon Cycle Science program (NNH10DA001N) managed by Diane E. Wickland and Richard Eckman. Edited by: D. Loyola  ... 
doi:10.5194/amt-6-981-2013 fatcat:z4p5wpl6njf6bou5jq5xdbkl2i

Lunar eclipse theory revisited: Scattered sunlight in both the quiescent and the volcanically perturbed atmosphere

A. García Muñoz, E. Pallé
2011 Journal of Quantitative Spectroscopy and Radiative Transfer  
The classical theory of lunar eclipses is built on the premise that the sunlight scattered by the gases and particles in the atmosphere contributes negligibly to the brightness of the eclipsed Moon.  ...  Spectra of the sunlight that reaches the shadowed Moon during the eclipse are presented to illustrate the distinct contributions from both components.  ...  Acknowledgment The calculation of the scattering phase functions is based on the Mie-theory code developed by Mishchenko [28, 29] .  ... 
doi:10.1016/j.jqsrt.2011.03.017 fatcat:yurh46bnonbyjhxxyzvwsz4hne

Characterization and correction of Global Ozone Monitoring Experiment 2 ultraviolet measurements and application to ozone profile retrievals

Zhaonan Cai, Yi Liu, Xiong Liu, Kelly Chance, Caroline R. Nowlan, Ruediger Lang, Rosemary Munro, Raid Suleiman
2012 Journal of Geophysical Research  
1] We present an assessment study of the Global Ozone Monitoring Experiment 2 (GOME-2) reflectance for the wavelength range 270-350 nm by comparing measurements with simulations calculated using the vector  ...  Temporal analysis indicates that reflectance degradation began at the beginning of the mission; the reflectance degrades by 15% around 290 nm and by 2.2% around 325 nm from 2007 through 2009.  ...  This study was supported by the National Science Foundation of China under grant 41075014 and the Public Meteorology Special Foundation of MOST (grant GYHY201106045).  ... 
doi:10.1029/2011jd017096 fatcat:hkqzddlxezam3b3p5a5wsottk4

Reference solar irradiance spectra and consequences of their disparities in remote sensing of the ocean colour

P. Shanmugam, Y. H. Ahn
2007 Annales Geophysicae  
The differences in these spectra in absolute terms and in the SeaWiFS and MERIS in-band irradiances and their consequences on the retrieval algorithms of chlorophyll and suspended sediment are analyzed  ...  This study first describes the processes which generally require the application of a solar irradiance spectrum, and then investigates the eight solar irradiance spectra (widely in use within the remote  ...  This research work is a part of the Development of Geostationary Ocean Colour Imager (GOCI) supported by the Ministry of Maritime Affairs and Fisheries (MOMAF) through KORDI contract PM 397-00.  ... 
doi:10.5194/angeo-25-1235-2007 fatcat:e6q6ouuyv5gvho2selw4xz6iua

Ammonia, Water Clouds and Methane Abundances of Giant Exoplanets and Opportunities for Super-Earth Exoplanets [article]

Renyu Hu
2014 arXiv   pre-print
These "cold" exoplanets have atmospheric environments conducive for the formation of water and/or ammonia clouds, like Jupiter in the Solar System.  ...  We study the science return from direct-imaging exoplanet missions, focusing on the exoplanet atmospheric compositions.  ...  reflection spectra of exoplanets contain rich information on the composition, and energetic and dynamic processes of exoplanet atmospheres.  ... 
arXiv:1412.7582v1 fatcat:ssvtyu5vofgk5npf44k4hmeruy

Assessing Band Sensitivity to Atmospheric Radiation Transfer for Space-Based Retrieval of Solar-Induced Chlorophyll Fluorescence

Xinjie Liu, Liangyun Liu
2014 Remote Sensing  
Based on the simulated dataset, we analyzed the sensitivities of five potential Fs retrieval bands (Hα, K I, Fe, O2-A, and O2-B) to different atmospheric transfer parameters, including atmosphere profile  ...  In this study, we first simulated top-of-atmosphere (TOA) radiance using FluorMODgui3.1 and MODTRAN5 code.  ...  Liangyun Liu contributed extensively in the research method and the manuscript revision. Conflicts of Interest The authors declare no conflict of interest.  ... 
doi:10.3390/rs61110656 fatcat:hnpo53mkcnhzda7zasifylhmru

Modeling bistatic spectral measurements of temporally evolving reflected and emitted energy from a distant and receding target

Salvatore J. Cusumano
2011 Journal of Applied Remote Sensing  
The multispectral example emphasizes atmospheric effects using HELEEOS, the interaction of the energy and the test object, the observed reflectance, and subsequent hot spot generated.  ...  A model of a sensor suite located on the surface is included to collect the diffuse reflected in-band laser radiation and the emitted radiance of the hot spot in four separate and spatially offset midwave  ...  The views expressed in this paper are those of the authors and do not necessarily reflect the official policy or position of the Air Force, the Department of Defense or the U.S. Government.  ... 
doi:10.1117/1.3626025 fatcat:hjpdm6ydzvdwrmomskcldw74yy

Analysis of MODIS–MISR calibration differences using surface albedo around AERONET sites and cloud reflectance

A. Lyapustin, Y. Wang, R. Kahn, J. Xiong, A. Ignatov, R. Wolfe, A. Wu, B. Holben, C. Bruegge
2007 Remote Sensing of Environment  
To establish an independent MODIS-MISR calibration link, top-of-atmosphere MODIS and MISR reflectances were regressed against each other over liquid water clouds.  ...  The MISR-MODIS band gain differences for the top-ofatmosphere reflectance estimated with this technique are +6.0% in the Blue, +3.3% in the Green, + 2.7% in the Red, and + 0.8% in the NIR band.  ...  The L1B radiance is calculated from the reflectance using the in-band irradiance which depends on the selected spectral solar irradiance model (SIM).  ... 
doi:10.1016/j.rse.2006.09.028 fatcat:gxug6xtigjg5nbvwj4ln6qgowa
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