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  • Atmospheric correction over the ocean for hyperspectral radiometers using multi-angle polarimetric retrievals 

    Hannadige, Neranga K.; Zhai, Peng-Wang; Gao, Meng; Franz, Bryan A.; Hu, Yongxiang; Knobelspiesse, Kirk; Werdell, P. Jeremy; Ibrahim, Amir; Cairns, Brian; Hasekamp, Otto P. (OSA Publishing, 2021)
    We developed a fast and accurate polynomial based atmospheric correction (POLYAC) algorithm for hyperspectral radiometric measurements, which parameterizes the atmospheric path radiances using aerosol properties retrieved ...
  • A Climate Hyperspectral Infrared Radiance Product (CHIRP) Combining the AIRS and CrIS Satellite Sounding Record 

    Strow, L. Larrabee; Hepplewhite, Chris; Motteler, Howard; Buczkowski, Steven; DeSouza-Machado, Sergio (MDPI, 2021-01-26)
    A Climate Hyperspectral Infrared Radiance Product (CHIRP) is introduced combining data from the Atmospheric Infrared Sounder (AIRS) on NASA’s EOS-AQUA platform, the Cross-Track Infrared Sounder (CrIS) sounder on NASA’s ...
  • Contribution of the world's main dust source regions to the global cycle of desert dust 

    Kok, Jasper F.; Adebiyi, Adeyemi A.; Albani, Samuel; Balkanski, Yves; Checa-Garcia, Ramiro; Chin, Mian; Colarco, Peter R.; Hamilton, Douglas S.; Huang, Yue; Ito, Akinori; Klose, Martina; Li, Longlei; Mahowald, Natalie M.; Miller, Ron L.; Obiso, Vincenzo; García-Pando, Carlos Pérez; Rocha-Lima, Adriana; Wan, Jessica S. (Copernicus Publications, 2021-01-18)
    Even though desert dust is the most abundant aerosol by mass in Earth's atmosphere, the relative contributions of the world’s major dust source regions to the global dust cycle remain poorly constrained. This problem hinders ...
  • Black Power in Washington, D.C., 1961-1998 

    Musgrove, George Derek; Tolosa, Kirubel; Boot, Lee; Black Power organization; United Planning Organization
    In late 1967, Stokely Carmichael, the nation’s foremost Black Power advocate, surveyed the landscape of U.S. politics looking for a place where concerted black organizing could have its deepest impact. He chose Washington, D.C.
  • MARBLEIZED OIL FROM THE GULF OF MEXICO 

    MOREN, LISA
    How can we respond to the ever growing, ever multiplying ecological tragedies without sinking into a quagmire of negativity and fear about the present and the future? Lisa Moren performs a brave and important art of inquiry ...
  • Kate Millett, Sculptor: The First 38 Years 

    O'dell, Kathy; Millett, Kate; Berger, Maurice (Fine Arts Gallery, University of Maryland Baltimore County, 1997)
    Kate Millett (1934-2017) is widely known as a feminist scholar and activist. Indeed, she became one of the key initiators of the second round of 20th Century feminism when her doctoral dissertation-turned-book, titled ...
  • Application of the Monte Carlo method in modeling dusty gas, dust in plasma, and energetic ions in planetary, magnetospheric, and heliospheric environments. 

    Tenishev, Valeriy; Shou, Yinsi; Borovikov, Dmitry; Lee, Yuni; Fougere, Nicolas; Michael, Adam; Combi, Michael R. (AGU Pubication, 2021-01-13)
    Typical planetary and planetary satellite exospheres are in non‐equilibrium conditions, which means that a distribution function that describes these environments is far from Maxwellian. It is even more true when considering ...
  • Determining Planetary Boundary Layer Height by Micro-pulse Lidar with Validation by UAV Measurements 

    Wang, Yueh-Chen; Wang, Sheng-Hsiang; Lewis, Jasper R.; Chang, Shuenn-Chin; Griffith, Stephen M. (Aerosol and Air Quality Research, 2020-12-31)
    Planetary boundary layer height (PBLH) is often used to characterize the structure of the lower atmosphere. Aerosol lidar, a ground-based remote sensing method, provides the vertical distribution of aerosol at a high ...
  • AeroCom phase III multi-model evaluation of the aerosol life cycle and optical properties using ground- and space-based remote sensing as well as surface in situ observations 

    Gliß, Jonas; Mortier, Augustin; Schulz, Michael; Andrews, Elisabeth; Balkanski, Yves; Bauer, Susanne E.; Benedictow, Anna M. K.; Bian, Huisheng; Checa-Garcia, Ramiro; Chin, Mian; Ginoux, Paul; Griesfeller, Jan J.; Heckel, Andreas; Kipling, Zak; Kirkevåg, Alf; Kokkola, Harri; Laj, Paolo; Sager, Philippe Le; Lund, Marianne Tronstad; Myhre, Cathrine Lund; Matsui, Hitoshi; Myhre, Gunnar; Neubauer, David; Noije, Twan van; North, Peter; Olivié, Dirk J. L.; Rémy, Samuel; Sogacheva, Larisa; Takemura, Toshihiko; Tsigaridis, Kostas; Tsyro, Svetlana G. (Copernicus Publications, 2021-01-06)
    Within the framework of the AeroCom (Aerosol Comparisons between Observations and Models) initiative, the state-of-the-art modelling of aerosol optical properties is assessed from 14 global models participating in the phase ...
  • Deciphering Solar Magnetic Activity. II. The Solar Cycle Clock and the Onset of Solar Minimum Conditions 

    Leamon, Robert; McIntosh, Scott; Chapman, Sandra; Watkins, Nicholas; Chatterjee, Subhamoy; Title, Alan
    The Sun's variability is controlled by the progression and interaction of the magnetized systems that form the 22-year magnetic activity cycle (the "Hale Cycle") as they march from their origin at ∼55 degrees latitude to ...
  • The Value of Urban Flood Modeling 

    Rosenzweig, B. R.; Cantis, P. Herreros; Kim, Y.; Cohn, A.; Grove, K.; Brock, J.; Yesuf, J.; Mistry, P.; Welty, C.; McPhearson, T.; Sauer, J.; Chang, H. (AGU Pubication, 2020-12-27)
    Floods are important disturbances to urban socio‐eco‐technical systems and their meteorological drivers are projected to increase through the century due to global climate change. Urban flood models are numerical models ...
  • Centrifugal Equator in Jupiter’s Plasma Sheet 

    Phipps, Phillip; Bagenal, Fran (AGU Pubication, 2020-12-27)
    In Jupiter’s magnetosphere, the structure of the plasma sheet depends on the magnetic field geometry and the centrifugal forces on the plasma. We present a simple formulation for the centrifugal equator, the farthest point ...
  • High-energy emission from a magnetar giant flare in the Sculptor galaxy 

    The Fermi-LAT Collaboration; M. Ajello; et al
    Magnetars are the most highly magnetized neutron stars in the cosmos (with magnetic field 10¹³–10¹⁵ G). Giant flares from magnetars are rare, short-duration (about 0.1 s) bursts of hard X-rays and soft γ rays1,2. Owing to ...
  • Toward racial justice in linguistics:Interdisciplinary insights into theorizing race in the discipline and diversifying the profession 

    Hudley, Anne H. Charity; Mallinson, Christine; Bucholtz, Mary (Project Muse, 2020-12)
    This article builds on the Linguistic Society of America's Statement on Race to argue that linguistics urgently needs an interdisciplinarily informed theoretical engagement with race and racism. To be adequate, a linguistic ...
  • Identification of a Local Sample of Gamma-Ray Bursts Consistent with a Magnetar Giant Flare Origin 

    Burns, E.; Svinkin, D.; Hurley, K.; Wadiasingh, Z.; Negro, M.; Younes, G.; Hamburg, R.; Ridnaia, A.; Cook, D.; Cenko, S. B.; Aloisi, R.; Baring, M.; Briggs, M. S.; Christensen, N.; Frederiks, D.; Goldstein, A.; Hui, C. M.; Kaplan, D. L.; Kasliwal, M. M.; Kocevski, D.; Roberts, O. J.; Savchenko, V.; Tohuvavohu, A.; Veres, P.; Wilson-Hodge, C. A.
    Cosmological Gamma-Ray Bursts (GRBs) are known to arise from distinct progenitor channels: short GRBs mostly from neutron star mergers and long GRBs from a rare type of core-collapse supernova (CCSN) called collapsars. ...
  • AstroPix: Investigating the Potential of Silicon Pixel Sensors in the Future of Gamma-ray Astrophysics 

    Brewer, Isabella; Caputo, Regina; Negro, Michela; Leys, Richard; Kierans, Carolyn; Peric, Ivan; Metcalfe, Jessica; Perkins, Jeremy
    This paper details preliminary photon measurements with the monolithic silicon detector ATLASPix, a pixel detector built and optimized for the CERN experiment ATLAS. The goal of this paper is to determine the promise of ...
  • Investigating γ-ray halos around three HAWC bright sources in Fermi-LAT data 

    Mauro, Mattia Di; Manconi, Silvia; Negro, Michela; Donato, Fiorenza
    Numerous extended sources around Galactic pulsars have shown significant γ-ray emission from GeV to TeV energies, revealing hundreds of TeV energy electrons scattering off of the underlying photon fields through inverse ...
  • Advanced fabrication technologies for ultraprecise replicated mirrors for x-ray telescopes 

    Mimura, Hidekazu; Yamaguchi, Gota; Kume, Takehiro; Takeo, Yoko; Ito, Akinari; Matsuzawa, Yusuke; Saito, Takahiro; Hiraguri, Kentarou; Takehara, Yusuke; Takigawa, Ayumu; Tamura, Keisuke; Kanoh, Tetsuo; Tachibana, Kenji; Hashizume, Hirokazu; Mitsuishi, Ikuyuki (SPIE, 2020-12-13)
    For many years, Wolter mirrors have been used as imaging elements in X-ray telescopes. The shape error of Wolter mirrors fabricated by replicating the shape of a mandrel originates from the replication error in electroforming. ...
  • Dying of the Light: An X-ray Fading Cold Quasar at z ~ 0.405 

    Cooke, Kevin C.; Kirkpatrick, Allison; Estrada, Michael; Messias, Hugo; Peca, Alessandro; Cappelluti, Nico; Ananna, Tonima Tasnim; Brewster, Jason; Glikman, Eilat; LaMassa, Stephanie; Leung, T. K. Daisy; Trump, Jonathan R.; Turner, Tracey Jane; Urry, C. Megan (IOP, 2020-11-06)
    Cold quasars are a rare subpopulation observed to host unobscured, X-ray luminous active galactic nuclei (AGN) while also retaining a cold gas supply fueling high star formation rates. These objects are interpreted as AGN ...
  • The cyclotron line energy in Her X-1: stable after the decay 

    Staubert, R.; Ducci, L.; Ji, L.; Fürst, F.; Wilms, J.; Rothschild, R.E.; Pottschmid, K.; Brumback, M.; Harrison, F. (2020-08-17)
    We summarize the results of a dedicated effort between 2012 and 2019 to follow the evolution of the cyclotron line in Her~X-1 through repeated NuSTAR observations. The previously observed nearly 20-year long decay of the ...

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