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  • 1
    Call number: AWI A10-18-91567
    In: AIP conference proceedings, Vol. 1531
    Type of Medium: Monograph available for loan
    Pages: XXV, 970 S. , Ill., graph. Darst., Kt.
    ISBN: 9780735411555 , 9781629936963 (Print on Demand)
    Series Statement: AIP conference proceedings 1531
    Language: English
    Note: Table of Contents: Preface: Radiation Processes in the Atmosphere and Ocean / Robert F. Cahalan. - Acknowledgments. - PLENARY SESSION. - UNION-HISTORICAL PERSPECTIVES AND CURRENT TOPICS IN RADIATION PROCESSES IN THE ATMOSPHERE AND OCEAN / Conveners: R. F. Cahalan, W. Schmutz, B. J. Sohn, and J. Fischer. - 125 years of radiative transfer: Enduring triumphs and persisting misconceptions / Michael I. Mishchenko. - Active remote sensing of cloud microphysics / Hajime Okamoto. - MIPAS: 10 years of spectroscopic measurements for investigating atmospheric composition / Herbert Fischer. - Status of high spectral resolution IR for advancing atmospheric state characterization and climate trend benchmarking: A period of both opportunity realized and squandered / Henry Revercomb, Fred Best, Robert Knuteson, David Tobin, Joe Taylor, and Jon Gero. - Growing up MODIS: Towards a mature aerosol climate data record / Robert C. Levy. - Radiative transfer and regional climate change / Kuo-Nan Liou. - Ocean optics: The next frontier / George W. Kattawar. - PARALLEL SESSIONS. - RADIATIVE TRANSFER THEORY AND MODELING / Conveners: B. Mayer, A. Marshak, and J.-L. Widlowski. - Oral Presentations. - New approach for radiative transfer in sea ice and its application for sea ice satellite remote sensing / E. P. Zege, A. V. Malinka, I. L. Katsev, A. S. Prikhach, and G. Heygster. - The line-by-line and polarized Monte Carlo atmospheric radiative transfer model / B. A. Fomin and V. A. Falaleeva. - Hyperspectral retrieval of surface reflectances: A new scheme / Jean-Claude Thelen and Stephan Havemann. - Accelerations of the discrete ordinate method for nadir viewing geometries / Dmitry Efremenko, Adrian Doicu, Diego Loyola, and Thomas Trautmann. - The simulation of radar and coherent backscattering with the Monte Carlo model MYSTIC / Christian Pause, Robert Buras, Claudia Emde, and Bernhard Mayer. - The visibility of airborne volcanic ash from the flight deck of an aircraft - The effect of clouds in the field of view / Daniel Sauer, Josef Gasteiger, Claudia Emde, Robert Buras, Bernhard Mayer, and Bernadett Weinzierl. - Results of processing airborne NASA and Russian cloud data / Irina Melnikova, Jefwa M. Genya, and Charles K. Gatebe. - 3D radiative processes in satellite measurements of aerosol properties / Tamás Várnai, Alexander Marshak, Weidong Yang, and Guoyong Wen. - Assessment of cloud heterogeneities effects on brightness temperatures simulated with a 3D Monte Carlo code in the thermal infrared / Thomas Fauchez, Céline Cornet, Frédéric Szczap, and Philippe Dubuisson. - Parametric 3D atmospheric reconstruction in highly variable terrain with recycled Monte Carlo paths and an adapted Bayesian inference engine / Ian Langmore, Anthony B. Davis, Guillaume Bal, and Youssef M. Marzouk. - Remote sensing of particle size profiles from cloud sides: Observables and retrievals in a 3D environment / Florian Ewald, Tobias Zinner, and Bernhard Mayer. - Poster Presentations. - Characterization of cloud microphysical parameters using airborne measurements by the research scanning polarimeter / Mikhail D. Alexandrov, Brian Cairns, Michael I. Mishchenko, Andrew S. Ackerman, and Claudia Emde. - Solution of the radiative transfer equation by eliminating the anisotropic part within the method of synthetic iteration / Vladimir P. Budak and Oleg V. Shagalov. - The phase matrix truncation impact on polarized radiance / M. Compiègne, L. C-Labonnote, and P. Dubuisson. - Evaluation of cloud heterogeneity effects on total and polarized visible radiances as measured by POLDER/PARASOL and consequences for retrieved cloud properties / C. Cornet, F. Szczap, L. C.-Labonnote, T. Fauchez, F. Parol, F. Thieuleux, J. Riedi, P. Dubuisson, and N. Ferlay. - Retrieval of volcanic ash and ice cloud physical properties together with gas concentration from IASI measurements using the AVL model / S. Kochenova, M. De Mazière, N. Kumps, S. Vandenbussche, and T. Kerzenmacher. - Use of shadowband correction models for predicting direct solar irradiance / M. C. Kotti, A. A. Argiriou, and A. Kazantzidis. - Simulation of airborne radar observations of precipitating systems at various frequency bands / Valentin Louf, Olivier Pujol, and Jérôme Riedi. - Fast radiative transfer model to simulate spectroscopic measurements of outgoing IR radiances in cloudy conditions / Alexey Rublev and Anatoly Trotsenko. - Intercomparison of three microwave/infrared high resolution line-by-line radiative transfer codes / F. Schreier, S. Gimeno Garcia, M. Milz, A. Kottayil, M. Höpfner, T. von Clarmann, and G. Stiller. - Py4CAtS – Python tools for line-by-line modelling of infrared atmospheric radiative transfer / Franz Schreier and Sebastián Gimeno García. - Theory of weak spectral line formation within a plane-parallel atmosphere bounded from below by a reflecting underlying surface / Oleg I. Smokty. - Analytical spatial-angular structure of polarized radiation fields in a uniform atmospheric slab / Oleg I. Smokty. - The mirror symmetry principle for radiation fields in a vertically non-uniform atmospheric slab / Oleg I. Smokty. - A 3D polarized Monte Carlo LIDAR system simulator for studying effects of cirrus inhomogeneities on CALIOP/CALIPSO measurements / F. Szczap, C. Cornet, A. Alqassem, Y. Gour, L. C.-Labonnote, and O. Jourdan. - The significance analysis of FY-2E split window data for "clear region" AMVs derivation / Zhenhui Wang, Yizhe Zhan, Zhiguo Zhang, and Lu Yang. - PARTICLE RADIATIVE PROPERTIES / Conveners: T. Aoki, P. Di Girolamo, and H. Ishimoto. - Oral Presentations. - Retrieval of aerosol microstructure and radiative properties for moderate turbidity under conditions of Western Siberia / Tatiana B. Zhuravleva, Tatiana V. Bedareva, and Mikhail A. Sviridenkov. - Vertical resolved aerosol characterization during the GAMARF campaign: Aerosol size distribution and radiative properties / José Luis Gómez-Amo, Daniela Meloni, Alcide di Sarra, Tatiana DiIorio, Wolfgang Junkermann, Víctor Estellés, Giandomenico Pace, and Jeroni Lorente. - A novel, broadband spectroscopic method to measure the extinction coefficient of aerosols in the near-ultraviolet / Eoin M. Wilson, Jun Chen, Ravi M. Varma, John C. Wenger, and Dean S. Venables. - Aerosol characteristics at the Alpine site of Innsbruck, Austria / Sigrid Wuttke, Axel Kreuter, and Mario Blumthaler. - Comparison of modeled optical properties of Saharan mineral dust aerosols with SAMUM lidar and photometer observations / Josef Gasteiger and Matthias Wiegner. - A self-consistent high- and low-frequency scattering model for cirrus / Anthony J. Baran, Richard Cotton, Stephan Havemann, Laurent C.-Labonnote, and Franco Marenco. - Does scattered radiation undergo bluing within clouds? / I. Melnikova, T. Simakina, A. Vasilyev, C. Gatebe, and C. Varotsos. - Poster Presentations. - Numerical simulation of spectral albedos of glacier surfaces covered with glacial microbes in Northwestern Greenland / Teruo Aoki, Katsuyuki Kuchiki, Masashi Niwano, Sumito Matoba, Jun Uetake, Kazuhiko Masuda, and Hiroshi Ishimoto. - Development of a quality control algorithm for analysis of SKYNET data and an estimation of the single scattering albedo / Makiko Hashimoto and Teruyuki Nakajima. - Optical modeling of irregularly shaped ice particles in convective cirrus / Hiroshi Ishimoto, Kazuhiko Masuda, Yuzo Mano, Narihiro Orikasa, and Akihiro Uchiyama. - Optimizing the ice crystal scattering database for the GCOM-C/SGLI satellite mission / Husi Letu, Takashi Y. Nakajima, Takashi N. Matsui, and Yoshiaki Matsumae. - Synergetic retrieval of atmospheric aerosol from a combination of lidar and radiometer ground-based observations / Anton Lopatin, Oleg Dubovik, Anatoli Chaikovsky, Philippe Goloub, Didier Tanre, Pavel Litvinov, and Tatiana Lapyonok. - Satellite study over Europe to estimate the single scattering albedo and the aerosol opt
    Location: AWI Reading room
    Branch Library: AWI Library
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  • 2
    Publication Date: 2013-08-27
    Print ISSN: 2169-897X
    Electronic ISSN: 2169-8996
    Topics: Geosciences , Physics
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  • 3
    Publication Date: 2013-06-26
    Print ISSN: 2169-897X
    Electronic ISSN: 2169-8996
    Topics: Geosciences , Physics
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  • 4
    Publication Date: 2012-02-01
    Description: Liquid clouds play a profound role in the global radiation budget, but it is difficult to retrieve their vertical profile remotely. Ordinary narrow-field-of-view (FOV) lidars receive a strong return from such clouds, but the information is limited to the first few optical depths. Wide-angle multiple-FOV lidars can isolate radiation that is scattered multiple times before returning to the instrument, often penetrating much deeper into the cloud than does the single-scattered signal. These returns potentially contain information on the vertical profile of the extinction coefficient but are challenging to interpret because of the lack of a fast radiative transfer model for simulating them. This paper describes a variational algorithm that incorporates a fast forward model that is based on the time-dependent two-stream approximation, and its adjoint. Application of the algorithm to simulated data from a hypothetical airborne three-FOV lidar with a maximum footprint width of 600 m suggests that this approach should be able to retrieve the extinction structure down to an optical depth of around 6 and a total optical depth up to at least 35, depending on the maximum lidar FOV. The convergence behavior of Gauss–Newton and quasi-Newton optimization schemes are compared. Results are then presented from an application of the algorithm to observations of stratocumulus by the eight-FOV airborne Cloud Thickness from Off-Beam Lidar Returns (THOR) lidar. It is demonstrated how the averaging kernel can be used to diagnose the effective vertical resolution of the retrieved profile and, therefore, the depth to which information on the vertical structure can be recovered. This work enables more rigorous exploitation of returns from spaceborne lidar and radar that are subject to multiple scattering than was previously possible.
    Print ISSN: 1558-8424
    Electronic ISSN: 1558-8432
    Topics: Geography , Physics
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  • 5
    Publication Date: 2010-04-01
    Print ISSN: 0094-8276
    Electronic ISSN: 1944-8007
    Topics: Geosciences , Physics
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  • 6
    Publication Date: 2018-06-06
    Description: Two scenarios of spectral solar forcing, namely Spectral Irradiance Monitor (SIM)-based out-of-phase variations and conventional in-phase variations, are input to a time-dependent radiative-convective model (RCM), and to the GISS modelE. Both scenarios and models give maximum temperature responses in the upper stratosphere, decreasing to the surface. Upper stratospheric peak-to-peak responses to out-of-phase forcing are approx.0.6 K and approx.0.9 K in RCM and modelE, approx.5 times larger than responses to in-phase forcing. Stratospheric responses are in-phase with TSI and UV variations, and resemble HALOE observed 11-year temperature variations. For in-phase forcing, ocean mixed layer response lags surface air response by approx.2 years, and is approx.0.06 K compared to approx.0.14 K for atmosphere. For out-of-phase forcing, lags are similar, but surface responses are significantly smaller. For both scenarios, modelE surface responses are less than 0.1 K in the tropics, and display similar patterns over oceanic regions, but complex responses over land.
    Keywords: Solar Physics
    Type: Geophysical Research Letters (ISSN 0094-8276); Volume 37
    Format: text
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  • 7
    Publication Date: 2019-07-12
    Description: While liquid clouds playa very important role in the global radiation budget, it's been very difficult to remotely determine their internal cloud structure. Ordinary lidar instruments (similar to radars but using visible light pulses) receive strong signals from such clouds, but the information is limited to a thin layer near the cloud boundary. Multiple field-of-view (FOV) lidars offer some new hope as they are able to isolate photons that were scattered many times by cloud droplets and penetrated deep into a cloud before returning to the instrument. Their data contains new information on cloud structure, although the lack of fast simulation methods made it challenging to interpret the observations. This paper describes a fast new technique that can simulate multiple-FOV lidar signals and can even estimate the way the signals would change in response to changes in cloud properties-an ability that allows quick refinements in our initial guesses of cloud structure. Results for a hypothetical airborne three-FOV lidar suggest that this approach can help determine cloud structure for a deeper layer in clouds, and can reliably determine the optical thickness of even fairly thick liquid clouds. The algorithm is also applied to stratocumulus observations by the 8-FOV airborne "THOR" lidar. These tests demonstrate that the new method can determine the depth to which a lidar provides useful information on vertical cloud structure. This work opens the way to exploit data from spaceborne lidar and radar more rigorously than has been possible up to now.
    Keywords: Meteorology and Climatology
    Type: GSFC.JA.5749.2011
    Format: application/pdf
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