Now showing items 1-20 of 21

    • 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 ...
    • Atmospheric Correction of Satellite Ocean-Color Imagery During the PACE Era 

      Frouin, Robert J.; Franz, Bryan A.; Ibrahim, Amir; Knobelspiesse, Kirk D.; Ahmad, Ziauddin; Cairns, Brian; Chowdhary, Jacek; Dierssen, Heidi M.; Tan, Jing; Dubovik, Oleg; Huang, Xin; Davis, Anthony B.; Kalashnikova, Olga; Thompson, David R.; Remer, Lorraine Ann; Boss, Emmanuel; Coddington, Odele; Deschamps, Pierre-Yves; Gao, Bo-Cai; Gross, Lydwine; Hasekamp, Otto; Omar, Ali; Pelletier, Bruno; Ramon, Didier; Steinmetz, François; Zhai, Peng-wang (Frontiers, 2019-07-26)
      The Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) mission will carry into space the Ocean Color Instrument (OCI), a spectrometer measuring at 5 nm spectral resolution in the ultraviolet (UV) to near infrared (NIR) with ...
    • CAFE: a new, improved non-resonant laser-induced fluorescence instrument for airborne in situ measurement of formaldehyde 

      Clair, Jason M. St.; Swanson, Andrew K.; Bailey, Steven A.; Hanisco, Thomas F. (Copernicus Publications, 2019-08-30)
      NASA Compact Airborne Formaldehyde Experiment (CAFE) is a nonresonant laser-induced fluorescence instrument for airborne in situ measurement of formaldehyde (HCHO). The instrument is described here with highlighted improvements ...
    • Characterization of smoke and dust episode over West Africa: comparison of MERRA-2 modeling with multiwavelength Mie–Raman lidar observations 

      Veselovskii, Igor; Goloub, Philippe; Podvin, Thierry; Tanre, Didier; da Silva, Arlindo; C (European Geosciences Union, 2018)
      Observations of multiwavelength Mie–Raman lidar taken during the SHADOW field campaign are used to analyze a smoke–dust episode over West Africa on 24–27 December 2015. For the case considered, the dust layer extended from ...
    • 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) ...
    • 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 ...
    • 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 ...
    • Going Beyond Standard Ocean Color Observations: Lidar and Polarimetry 

      Jamet, Cédric; Ibrahim, Amir; Ahmad, Ziauddin; Angelini, Federico; Babin, Marcel; Behrenfeld, Michael J.; Boss, Emmanuel; Cairns, Brian; Churnside, James; Chowdhary, Jacek; Davis, Anthony B.; Dionisi, Davide; Duforêt-Gaurier, Lucile; Franz, Bryan; Frouin, Robert; Gao, Meng; Gray, Deric; Hasekamp, Otto; He, Xianqiang; Hostetler, Chris; Kalashnikova, Olga V.; Knobelspiesse, Kirk; Lacour, Léo; Loisel, Hubert; Martins, Vanderlei; Rehm, Eric; Remer, Lorraine; Sanhaj, Idriss; Stamnes, Knut; Stamnes, Snorre; Victori, Stéphane; Werdel, Jeremy; Zhai, Peng-Wang (2019-05-21)
      Passive ocean color images have provided a sustained synoptic view of the distribution of ocean optical properties and color and biogeochemical parameters for the past 20-plus years. These images have revolutionized our ...
    • Hybrid Causality Analysis of ENSO’s Global Impacts on Climate Variables Based on Data-Driven Analytics and Climate Model Simulation 

      Song, Hua; Tian, Jing; Huang, Jingfeng; Guo, Pei; Zhang, Zhibo; Wang, Jianwu (Frontiers, 2019-09-18)
      Numerous studies have indicated that El Niño and the southern oscillation (ENSO) could have determinant impacts on remote weather and climate using the conventional correlation-based methods, which however, cannot identify ...
    • Impact of the ARSET Program on Use of Remote-Sensing Data 

      Prados, Ana I.; Carleton-Hug, Annelise; Gupta, Pawan; Mehta, Amita; Blevins, Brock; Schmidt, Cynthia; Barbato, David G.; McCullum, Amber Jean; Hook, Elizabeth; Podest, Erika; Follette-Cook, Melanie; Hudson-Odoi, Selwyn; Kinsey, Tom (MDPI, 2019-06-04)
      We show that training activities conducted through the National Aeronautics and Space Administration (NASA)’s Applied Remote-Sensing Training (ARSET) program led to a significant increase in remote-sensing data use for ...
    • kCARTA : A fast pseudo line-by-line radiative transfer algorithm with analytic Jacobians, fluxes, Non-Local Thermodynamic Equilibrium and scattering for the infrared 

      Machado, Sergio DeSouza; Strow, L. Larrabee; Motteler, Howard; Hannon, Scott (EGU, 2019-08-09)
      A fast pseudo-monochromatic radiative transfer package using a Singular Value Decomposition (SVD) compressed atmospheric optical depth database has been developed, primarily for use with hyperspectral sounding instruments. ...
    • A method for quantifying near range point source induced O₃ titration events using Co-located Lidar and Pandora measurements 

      Gronoff, Guillaume; Robinson, Joseph; Berkoff, Timothy; Swap, Robert; Farris, Betsy; Schroeder, Jeremy; Halliday, Hannah S.; Knepp, Travis; Spinei, Elena; Carrion, William; Adcock, Edward E.; Johns, Zachary; Allen, Danette; Pippin, Margaret (Elsevier Ltd., 2019-02-19)
      A ground-based tropospheric O3 lidar with unique vertical near-range capabilities was deployed in support of the larger OWLETS 2017 campaign on the Chesapeake Bay Bridge Tunnel, at the mouth of the Chesapeake Bay. It was ...
    • 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. ...
    • An Overview of Low‐Level Jet Winds and Corresponding Mixed Layer Depths During PECAN 

      Carroll, Brian J.; Demoz, Belay B.; Delgado, Ruben (American Geophysical Union, 2019-08-09)
      Thirty southerly low‐level jet (LLJ) events were observed during the Plains Elevated Convection at Night (PECAN) field campaign in the Great Plains region of the United States during summer 2015. Here we present Doppler ...
    • 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 ...
    • 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 ...
    • Retrieval of aerosol properties and water-leaving reflectance from multi-angular polarimetric measurements over coastal waters 

      Gao, Meng; Zhai, Peng-Wang; Franz, Bryan; Hu, Yongxiang; Knobelspiesse, Kirk; Werdell, P. Jeremy; Amir, Ibrahim; Xu, Feng; Cairns, Brian (The Optical Society, 2018)
      Ocean color remote sensing is an important tool to monitor water quality and biogeochemical conditions of ocean. Atmospheric correction, which obtains water-leaving radiance from the total radiance measured by satellite-borne ...
    • Retrieving Aerosol Characteristics From the PACE Mission, Part 1: Ocean Color Instrument 

      Remer, Lorraine A.; Davis, Anthony B.; Mattoo, Shana; Levy, Robert C.; Kalashnikova, Olga V.; Coddington, Odele; Chowdhary, Jacek; Knobelspiesse, Kirk; Xu, Xiaoguang; Ahmad, Ziauddin; Boss, Emmanuel; Cairns, Brian; Dierssen, Heidi M.; Diner, David J.; Franz, Bryan; Frouin, Robert; Gao, Bo-Cai; Ibrahim, Amir; Martins, J. Vanderlei; Omar, Ali H.; Torres, Omar; Xu, Feng; Zhai, Peng-Wang (Frontiers Media S.A, 2019-07-23)
      NASA’s Plankton, Aerosol, Clouds, ocean Ecosystem (PACE) satellite mission is scheduled to launch in 2022, with the Ocean Color Instrument (OCI) on board. For the first time reflected sunlight from the Earth across a broad ...
    • Retrieving Aerosol Characteristics From the PACE Mission, Part 2: Multi-Angle and Polarimetry 

      Remer, Lorraine A.; Knobelspiesse, Kirk; Zhai, Pengwang; Xu, Feng; Kalashnikova, Olga V.; Chowdhary, Jacek; Hasekamp, Otto; Dubovik, Oleg; Wu, Lianghai; Ahmad, Ziauddin; Boss, Emmanuel; Cairns, Brian; Coddington, Odele; Davis, Anthony B.; Dierssen, Heidi M.; Diner, David J.; Franz, Bryan; Frouin, Robert; Gao, Bo-Cai; Ibrahim, Amir; Levy, Robert C.; Martins, J. Vanderlei; Omar, Ali H.; Torres, Omar (Frontiers Media S.A., 2019-07-23)
      The Plankton, Aerosol, Clouds, ocean Ecosystem (PACE) mission presents new opportunities and new challenges in applying observations of two complementary multi-angle polarimeters for the space-based retrieval of global ...
    • Satellite-detected Ocean Ecosystem Response to Volcanic Eruptionsin the Subarctic Northeast Pacific Ocean 

      Westberry, Toby, K.; Shi, Yingxi R.; Yu, H.; Behrenfeld, Michael J.; Remer, L. A. (American Geophysical Union, 2019-09-16)
      Volcanic eruptions in the Aleutian archipelago during the summer of 2008 deposited large quantities of iron-laden ash to the Subarctic North Pacific Ocean. The surface ocean ecosystem response has been previously ...