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Monthly patterns of ammonia over the contiguous United States at 2 km resolution

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  • معلومة اضافية
    • Contributors:
      Department of Civil and Environmental Engineering Princeton; Princeton University; US Environmental Protection Agency (EPA); NOAA Geophysical Fluid Dynamics Laboratory (GFDL); National Oceanic and Atmospheric Administration (NOAA); Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing (SQUARES); Université libre de Bruxelles (ULB); TROPO - LATMOS; Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS); Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS); Institut Pierre-Simon-Laplace (IPSL (FR_636)); École normale supérieure - Paris (ENS-PSL); Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X); Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)
    • بيانات النشر:
      CCSD
      American Geophysical Union
    • الموضوع:
      2021
    • Collection:
      Institut national des sciences de l'Univers: HAL-INSU
    • نبذة مختصرة :
      International audience ; Monthly, high resolution (∼2 km) ammonia (NH3) column maps from the Infrared Atmospheric Sounding Interferometer (IASI) were developed across the contiguous United States and adjacent areas. Ammonia hotspots (95th percentile of the column distribution) were highly localized with a characteristic length scale of 12 km and median area of 152 km2. Five seasonality clusters were identified with k‐means++ clustering. The Midwest and eastern United States had a broad, spring maximum of NH3 (67% of hotspots in this cluster). The western United States, in contrast, showed a narrower mid‐summer peak (32% of hotspots). IASI spatiotemporal clustering was consistent with those from the Ammonia Monitoring Network. CMAQ and GFDL‐AM3 modeled NH3 columns have some success replicating the seasonal patterns but did not capture the regional differences. The high spatial‐resolution monthly NH3 maps serve as a constraint for model simulations and as a guide for the placement of future, ground‐based network sites.
    • الرقم المعرف:
      10.1029/2020GL090579
    • الدخول الالكتروني :
      https://insu.hal.science/insu-03086947
      https://insu.hal.science/insu-03086947v2/document
      https://insu.hal.science/insu-03086947v2/file/2020GL090579.pdf
      https://doi.org/10.1029/2020GL090579
    • Rights:
      http://creativecommons.org/licenses/by-nc/ ; info:eu-repo/semantics/OpenAccess
    • الرقم المعرف:
      edsbas.5B2DA826