Now showing items 1-20 of 50

    • Impact of aerosol non-sphericity on the satellite remote sensing of CO₂ 

      Chen, Xi; Wang, Jun; Yang, Dongxu; Xu, Xiaoguang; Yang, Ping; Dubovik, Oleg; Liu, Yi; Mishchenko, Michael; Spurr, Robert
      Existing algorithms for satellite remote sensing of CO₂ assume that all atmospheric aerosol particles are spherical. This assumption, however, is only valid for the atmosphere in the absence of dust particles that are ...
    • Recent global warming as confirmed by AIRS 

      Susskind, J.; Schmidt, G. A.; Lee, J. N.; Iredell, L. (IOP Publishing Ltd, 2019-04-17)
      This paper presents Atmospheric Infra-Red Sounder (AIRS) surface skin temperature anomalies for the period 2003 through 2017, and compares them to station-based analyses of surface air temperature anomalies (principally ...
    • An Automated Detection Methodology for Dry Well-Mixed Layers 

      Nicholls, Stephen D.; Mohr, Karen I. (American Meteorological Society, 2019-04-25)
      The intense surface heating over arid land surfaces produces dry well-mixed layers (WML) via dry convection. These layers are characterized by nearly constant potential temperature and low, nearly constant water vapor ...
    • The ILRS: approaching 20 years and planning for the future 

      Pearlman, Michael R.; Noll, Carey E.; Pavlis, Erricos C.; Lemoine, Frank G.; Combrink, Ludwig; Degnan, John J.; Kirchner, Georg; Schreiber, Ulrich (Springer Nature Switzerland AG., 2019-03-19)
      The International Laser Ranging Service (ILRS) was established by the International Association of Geodesy (IAG) in 1998 to support programs in geodesy, geophysics, fundamental constants and lunar research, and to provide ...
    • The Ozone Water–Land Environmental Transition Study 

      Sullivan, John T.; Berkoff, Timothy; Gronoff, Guillaume; Knepp, Travis; Pippin, Margaret; Allen, Danette; Twigg, Laurence; Swap, Robert; Tzortziou, Maria; Thompson, Anne M.; Stauffer, Ryan M.; Wolfe, Glenn M.; Flynn, James; Pusede, Sally E.; Judd, Laura M.; Moore, William; Baker, Barry D.; Al-Saadi, Jay; Mcgee, Thomas J. (American Meteorological Society, 2019-03-14)
      Coastal regions have historically represented a significant challenge for air quality investigations because of water–land boundary transition characteristics and a paucity of measurements available over water. Prior studies ...
    • Deep space observations of sun glint over oceans 

      Varnai, Tamas; Marshak, Alexander; Kostinski, Alexander (American Geophysical Union, 2018-07-09)
      Every hour or two, the Earth Polychromatic Imaging Camera (EPIC) onboard the DSCOVR satellite provides unique full-color images of the sunlit side of the Earth from the L1 Lagrangian point, which is four times farther the ...
    • Evaluation of Terra-MODIS C6 and C6.1 Aerosol Products against Beijing, XiangHe, and Xinglong AERONET Sites in China during 2004-2014 

      Bilal, Muhammad; Nazeer, Majid; Nichol, Janet; Qiu, Zhongfeng; Wang, Lunche; Bleiweiss, Max P.; Shen, Xiaojing; Campbell, James R.; Lolli, Simone (MDPI, 2019-02-27)
      In this study, Terra-MODIS (Moderate Resolution Imaging Spectroradiometer) Collections 6 and 6.1 (C6 & C6.1) aerosol optical depth (AOD) retrievals with the recommended high-quality flag (QF = 3) were retrieved from ...
    • Diurnal and Seasonal Variations in Chlorophyll Fluorescence Associated with Photosynthesis at Leaf and Canopy Scales 

      Campbell, Petya K. E.; Huemmrich, Karl F.; Middleton, Elizabeth M.; Ward, Lauren A.; Julitta, Tommaso; Daughtry, Craig S. T.; Burkart, Andreas; Russ, Andrew L.; Kustas, William P. (MDPI, 2019-02-27)
      There is a critical need for sensitive remote sensing approaches to monitor the parameters governing photosynthesis, at the temporal scales relevant to their natural dynamics. The photochemical reflectance index (PRI) and ...
    • Laser geodetic satellites: a high-accuracy scientific tool 

      Pearlman, M.; Arnold, D.; Davis, M.; Barlier, F.; Biancale, R.; Vasiliev, V.; Ciufolini, I.; Paolozzi, A.; Pavlis, E. C.; Sośnica, K.; Bloßfeld, M. (Springer Nature Switzerland AG., 2019-02-12)
      Satellite Laser Ranging (SLR) began in the mid-1960s on satellites of opportunity with retro-reflectors intended as a part of intercomparison tests of satellite tracking techniques. Shortly thereafter, data from these ...
    • Advancements in the Aerosol Robotic Network (AERONET) Version 3 database – automated near-real-time quality control algorithm with improved cloud screening for Sun photometer aerosol optical depth (AOD) measurements 

      Giles, David M.; Sinyuk, Alexander; Sorokin, Mikhail G.; Schafer, Joel S.; Smirnov, Alexander; Slutsker, Ilya; Eck, Thomas F.; Holben, Brent N.; Lewis, Jasper R.; Campbell, James R.; Welton, Ellsworth J.; Korkin, Sergey V.; Lyapustin, Alexei I. (Copernicus Publications on behalf of the European Geosciences Union, 2019-01-11)
      The Aerosol Robotic Network (AERONET) has provided highly accurate, ground-truth measurements of the aerosol optical depth (AOD) using Cimel Electronique Sun–sky radiometers for more than 25 years. In Version 2 (V2) of the ...
    • Land Surface Reflectances from Geostationary Sensors 

      Wang, Weile; Shuang, Li; Yujie, Wang; Xiong, Jun; Hashimoto, Hirofumi; Ganguly, Sangram; Lyapustin, Alexei; Nemani, Ramakrishna R. (NASA OCIO, 2018-12-10)
      GEONEX is a processing pipeline that produces a suite of satellite land surface products using data streams from the latest geostationary (GEO) sensors including the GOES016/ABI and the Himawari-8/AHI. The suite, created ...
    • Comparison of Global and Continental Land Cover Products for Selected Study Areas in South Central and Eastern European Region 

      Manakos, Ioannis; Tomaszewska, Monika; Gkinis, Ioannis; Brovkina, Olga; Filchev, Lachezar; Genc, Levent; Gitas, Ioannis Z.; Halabuk, Andrej; Inalpulat, Melis; Irimescu, Anisoara; Jelev, Georgi; Karantzalos, Konstantinos; Katagis, Thomas; Mesaroš, Minučer; Mihailescu, Denis; Nita, Mihai; Rusnak, Tomas; Stych, Premysl; Zemek, Frantisek; Albrechtová, Jana; Campbell, Petya (MDPI, 2018-12-06)
      Land cover is one of the key terrestrial variables used for monitoring and as input for modelling in support of achieving the United Nations Strategical Development Goals. Global and Continental Land Cover Products (GCLCs) ...
    • MISR Radiance Anomalies Induced by Stratospheric Volcanic Aerosols 

      Wu, Dong L.; Wang, Tao; Várnai, Tamás; Limbacher, James A.; Kahn, Ralph A.; Taha, Ghassan; Lee, Jae N.; Gong, Jie; Yuan, Tianle (MDPI, 2018-11-23)
      The 16-year MISR monthly radiances are analyzed in this study, showing significant enhancements of anisotropic scattering at high latitudes after several major volcanic eruptions with injection heights greater than 14 km. ...
    • Improving cloud optical property retrievals for partly cloudy pixels using coincident higher‐resolution single band measurements: A feasibility study using ASTER observations 

      Werner, F.; Zhang, Z.; Wind, G.; Miller, D.J.; Platnick, S.; Girolamo, L. Di (American Geophysical Union, 2018-10-09)
      Clear‐sky contamination is a challenging and long‐lasting problem for cloud optical thickness (τ) and effective droplet radius (rₑ𝒻𝒻) retrievals using passive satellite sensors. This study explores the feasibility of ...
    • Satellite- and ground-based CO total column observations over 2010 Russian fires: accuracy of top-down estimates based on thermal IR satellite data 

      Yurganov, L. N.; Rakitin, V.; Dzhola, A.; August, T.; Fokeeva, E.; George, M.; Gorchakov, G.; Grechko, E.; Hannon, S.; Karpov, A.; Ott, L.; Semutnikova, E.; Shumsky, R.; Strow, L. (Copernicus Publications on behalf of the European Geosciences Union, 2011-08-04)
      CO total column data are presented from three space sounders and two ground-based spectrometers in Moscow and its suburbs during the forest and peat fires that occurred in Central Russia in July–August 2010. Also presented ...
    • Infrared retrievals of dust using AIRS: Comparisons of optical depths and heights derived for a North African dust storm to other collocated EOS A‐Train and surface observations 

      DeSouza‐Machado, S.G.; Strow, L.L.; Imbiriba, B.; McCann, K.; Hoff, R.M.; Hannon, S.E.; Martins, J.V.; Tanré, D.; Deuzé, J.L.; Ducos, F.; Torres, O. (American Geophysical Union, 2010-08-03)
      [1] AIRS thermal infrared radiance data are used with a fast infrared scattering radiative transfer model to physically retrieve the dust column amount and dust height over both ocean and land. The retrieved optical depths ...
    • Improved agreement of AIRS tropospheric carbon monoxide products with other EOS sensors using optimal estimation retrievals 

      Warner, J. X.; Wei, Z.; Strow, L. L.; Barnet, C.D.; Sparling, L. C.; Diskin, G.; Sachse, G. (Copernicus Publications on behalf of the European Geosciences Union, 2010-10-08)
      We present in this paper an alternative retrieval algorithm for the Atmospheric Infrared Sounder (AIRS) tropospheric Carbon Monoxide (CO) products using the Optimal Estimation (OE) technique, which is different from the ...
    • Hyperspectral Earth Observation from IASI: Five Years of Accomplishments 

      Hilton, Fiona; Armante, Raymond; August, Thomas; Barnet, Chris; Bouchard, Aurelie; Camy-Peyret, Claude; Capelle, Virginie; Clarisse, Lieven; Clerbaux, Cathy; Coheur, Pierre-Francois; Collard, Andrew; Crevoisier, Cyril; Dufour, Gaelle; Edwards, David; Faijan, Francois; Fourrié, Nadia; Gambacorta, Antonia; Goldberg, Mitchell; Guidard, Vincent; Hurtmans, Daniel; Illingworth, Samuel; Jacquinet-Husson, Nicole; Kerzenmacher, Tobias; Klaes, Dieter; Lavanant, Lydie; Masiello, Guido; McNally, Anthony; Matricardi, Marco; Pavelin, Edward; Newman, Stuart; Payan, Sebastien; Péquignot, Eric; Peyridieu, Sophie; Phulpin, Thierry; Remedios, John; Schlüssel, Peter; Serio, Carmine; Strow, Larrabee; Stubenrauch, Claudia; Taylor, Jonathan; Tobin, David; Wolf, Walter; Zhou, Daniel (American Meteorological Society, 2012-03-01)
      The Infrared Atmospheric Sounding Interferometer (IASI) forms the main infrared sounding component of the European Organisation for the Exploitation of Meteorological Satellites's (EUMETSAT's) Meteorological Operation ...
    • Rapid response quality control service for the laser ranging tracking network 

      Otsubo, Toshimichi; Müller, Horst; Pavlis, Erricos C.; Torrence, Mark H.; Thaller, Daniela; Glotov, Vladimir D.; Wang, Xiaoya; Sośnica, Krzysztof; Meyer, Ulrich; Wilkinson, Matthew J. (Springer Berlin Heidelberg, 2018-09-10)
      Quality control systems for satellite laser ranging (SLR) observations have been developed at a number of analysis institutes worldwide, using various software packages of precise orbit determination and data analysis. ...
    • Shortwave direct radiative effects of above-cloud aerosols over global oceans derived from 8 years of CALIOP and MODIS observations 

      Zhang, Zhibo; Meyer, Kerry; Yu, Hongbin; Platnick, Steven; Colarco, Peter; Liu, Zhaoyan; Oreopoulos, Lazaros (Copernicus Publications on behalf of the European Geosciences Union, 2016-03-04)
      In this paper, we studied the frequency of occurrence and shortwave direct radiative effects (DREs) of above-cloud aerosols (ACAs) over global oceans using 8 years (2007–2014) of collocated CALIOP and MODIS observations. ...