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Combined Use of Satellite Observations and Global Hawk Unmanned Aircraft Dropwindsondes for Improved Tropical Cyclone Analyses and Forecasts
Filetype[PDF-1.10 MB]


Details:
  • Personal Author:
  • Description:
    AbstractThis study demonstrates that Global Hawk unmanned aircraft system dropwindsondes and Atmospheric Infrared Sounder (AIRS) observations can be complementary in sampling a tropical cyclone (TC). The assimilation of both datasets in a regional ensemble data assimilation system shows that the cumulative impact of both datasets is greater than either one alone because of the presence of mutually independent information content. The experiment that assimilates both datasets has smaller position and intensity errors in the mean analysis than those with individual datasets. The improvements in track and intensity forecasts that result from combining both datasets also indicate synergistic benefits. Overall, superior track and intensity forecasts are evident. This study suggests that polar-orbiting satellite spatial coverage should be considered in operational reconnaissance mission planning in order to achieve further improvements in TC analyses and forecasts.

  • DOI:
    http://dx.doi.org/10.1175/waf-d-17-0167.1
  • Document Type:
    Journal Article
  • Collection(s):
    Office of Oceanic and Atmospheric Research (OAR)
  • Main Document Checksum:
  • Supporting Files:
    No Additional Files
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      Series:
      CIMAS (Cooperative Institute for Marine and Atmospheric Studies)
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      Geophysical Research Letters, 45(9), 4180-4188.
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      CIMAS (Cooperative Institute for Marine and Atmospheric Studies)
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      Six years of simultaneous moored observations near the western and eastern boundaries of the South Atlantic are combined with satellite winds to produce a daily time series of the basin-wide meridional overturning circulation (MOC) volume transport a...
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    3. Influence of River-Induced Fronts on Hydrocarbon Transport: A Multiplatform Observational Study
      Personal Author:
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      The Taylor Energy Site is located in the vicinity of the Mississippi Delta region over the Northern Gulf of Mexico (NGoM). Surface oil patches have been persistently observed within this site since 2004, when an oil rig was destroyed by Hurricane Iva...
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    4. Azimuthal Distribution of Deep Convection, Environmental Factors, and Tropical Cyclone Rapid Intensification: A Perspective from HWRF Ensemble Forecasts of Hurricane Edouard (2014)
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      Journal of the Atmospheric Sciences, 75(1), 275-295.
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      CIMAS (Cooperative Institute for Marine and Atmospheric Studies)
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      Published Date:
      2018
      Source:
      Journal of Physical Oceanography, 48(4), 925-936.
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      CIMAS (Cooperative Institute for Marine and Atmospheric Studies)
      Description:
      The anomalous phenomena induced by the prevailing swell at low wind speeds prevent a complete understanding of air-sea interaction processes. Many studies have considered this complex problem, but most have focused on near-neutral conditions. In this...
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      Annane, B.; McNoldy, B.; Leidner, S. M.; Hoffman, R.; Atlas, R.; Majumdar, S. J.;
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      2018
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      Monthly Weather Review, 146(7), 2221-2236.
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      CIMAS (Cooperative Institute for Marine and Atmospheric Studies)
      Description:
      In preparation for the launch of the NASA Cyclone Global Navigation Satellite System (CYGNSS), a variety of observing system simulation experiments (OSSEs) were conducted to develop, tune, and assess methods of assimilating these novel observations o...
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      2018
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      Scientific Reports, 8, 11275.
      Series:
      CIMAS (Cooperative Institute for Marine and Atmospheric Studies)
      Description:
      Ocean flows are routinely inferred from low-resolution satellite altimetry measurements of sea surface height assuming a geostrophic balance. Recent nonlinear dynamical systems techniques have revealed that surface currents derived from altimetry can...
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      Personal Author:
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      Published Date:
      2018
      Source:
      Progress in Oceanography, 165, 205-214.
      Series:
      CIMAS (Cooperative Institute for Marine and Atmospheric Studies)
      Description:
      Since 2011, beach inundation of massive amounts of pelagic Sargassum algae has occurred around the Caribbean nations and islands. Previous studies have applied satellite ocean color to determine the origins of this phenomenon. These techniques, combi...
      File Type:
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    9. Composite Impact of Global Hawk Unmanned Aircraft Dropwindsondes on Tropical Cyclone Analyses and Forecasts
      Personal Author:
      Christophersen, H.; Aksoy, A.; Dunion, J.; Aberson, S.;
      Published Date:
      2018
      Source:
      Monthly Weather Review, 146(7), 2297-2314.
      Series:
      CIMAS (Cooperative Institute for Marine and Atmospheric Studies)
      Description:
      The impacts of Global Hawk (GH) dropwindsondes on tropical cyclone (TC) analyses and forecasts are examined over a composite sample of missions flown during the NASA Hurricane and Severe Storm Sentinel (HS3) and the NOAA Sensing Hazards with Operatio...
      File Type:
      Filetype[PDF - 5.43 MB]
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      Personal Author:
      Hoffman, R. N.
      Published Date:
      2018
      Source:
      Monthly Weather Review, 146(4), 1181-1195.
      Series:
      CIMAS (Cooperative Institute for Marine and Atmospheric Studies)
      Description:
      A one-dimensional (1D) analysis problem is defined and analyzed to explore the interaction of observation thinning or superobservation with observation errors that are correlated or systematic. The general formulation might be applied to a 1D analysi...
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      Personal Author:
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      Published Date:
      2018
      Source:
      Journal of Geophysical Research-Oceans, 123(4), 2981-2996.
      Series:
      CIMAS (Cooperative Institute for Marine and Atmospheric Studies)
      Description:
      Marine atmospheric boundary layer (MABL) roll plays an important role in the turbulent exchange of momentum, sensible heat, and moisture throughout MABL of tropical cyclone (TC). Hence, rolls are believed to be closely related to TC's development, in...
      File Type:
      Filetype[PDF - 8.33 MB]
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