| Combined Use of Satellite Observations and Global Hawk Unmanned Aircraft Dropwindsondes for Improved Tropical Cyclone Analyses and Forecasts - :18751 | Office of Oceanic and Atmospheric Research (OAR)
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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:
  • DOI:
    http://dx.doi.org/10.1175/waf-d-17-0167.1
  • Personal Authors:
  • 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.

  • Document Type:
    Journal Article
  • Collection(s):
    Office of Oceanic and Atmospheric Research (OAR)
  • Main Document Checksum:
  • Supporting Files:
    No Additional Files
    1. Azimuthal Distribution of Deep Convection, Environmental Factors, and Tropical Cyclone Rapid Intensification: A Perspective from HWRF Ensemble Forecasts of Hurricane Edouard (2014)
      Personal Author:
      Leighton, H.; Gopalakrishnan, S.; Zhang, J. A.; Rogers, R. F.; Zhang, Z.; Tallapragada, V.;
      Published:
      2018
      Source:
      Journal of the Atmospheric Sciences, 75(1), 275-295.
      Series:
      CIMAS (Cooperative Institute for Marine and Atmospheric Studies)
      Description:
      Forecasts from the operational Hurricane Weather Research and Forecasting (HWRF)-based ensemble prediction system for Hurricane Edouard (2014) are analyzed to study the differences in both the tropical cyclone inner-core structure and large-scale env...
      File Type:
      Filetype[PDF - 5.14 MB]
    2. Meridional Overturning Circulation Transport Variability at 34.5 degrees S During 2009-2017: Baroclinic and Barotropic Flows and the Dueling Influence of the Boundaries
      Personal Author:
      Meinen, C. S.; Speich, S.; Piola, A. R.; Ansorge, I.; Campos, E.; Kersale, M.; Terre, T.; Chidichimo, M. P.; Lamont, T.; Sato, O. T.; Perez, R. C.; Valla, D.; van den Berg, M.; Le Henaff, M.; Dong, S. F.; Garzoli, S. L.;
      Published:
      2018
      Source:
      Geophysical Research Letters, 45(9), 4180-4188.
      Series:
      CIMAS (Cooperative Institute for Marine and Atmospheric Studies)
      Description:
      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...
      File Type:
      Filetype[PDF - 1.84 MB]
    3. Enduring Lagrangian coherence of a Loop Current ring assessed using independent observations
      Personal Author:
      Beron-Vera, F. J.; Olascoaga, M. J.; Wang, Y.; Trinanes, J.; Perez-Brunius, P.;
      Published:
      2018
      Source:
      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...
      File Type:
      Filetype[PDF - 3.84 MB]
    4. A Study of the HWRF Analysis and Forecast Impact of Realistically Simulated CYGNSS Observations Assimilated as Scalar Wind Speeds and as VAM Wind Vectors
      Personal Author:
      Annane, B.; McNoldy, B.; Leidner, S. M.; Hoffman, R.; Atlas, R.; Majumdar, S. J.;
      Published:
      2018
      Source:
      Monthly Weather Review, 146(7), 2221-2236.
      Series:
      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...
      File Type:
      Filetype[PDF - 2.26 MB]
    5. The Influence of Swell on the Atmospheric Boundary Layer under Nonneutral Conditions
      Personal Author:
      Zou, Z. S.; Zhao, D. L.; Zhang, J. A.; Li, S. Q.; Cheng, Y. H.; Lv, H. B.; Ma, X.;
      Published:
      2018
      Source:
      Journal of Physical Oceanography, 48(4), 925-936.
      Series:
      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...
      File Type:
      Filetype[PDF - 1.32 MB]
    6. Simulating transport pathways of pelagic Sargassum from the Equatorial Atlantic into the Caribbean Sea
      Personal Author:
      Putman, N. F.; Goni, G. J.; Gramer, L. J.; Hu, C. M.; Johns, E. M.; Trinanes, J.; Wang, M. Q.;
      Published:
      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:
      Filetype[PDF - 3.20 MB]
    7. 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:
      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]
    8. The Effect of Thinning and Superobservations in a Simple One-Dimensional Data Analysis with Mischaracterized Error
      Personal Author:
      Hoffman, R. N.
      Published:
      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...
      File Type:
      Filetype[PDF - 894.27 KB]
    9. Tropical Cyclone Boundary Layer Rolls in Synthetic Aperture Radar Imagery
      Personal Author:
      Huang, L. Q.; Li, X. F.; Liu, B.; Zhang, J. A.; Shen, D. L.; Zhang, Z. H.; Yu, W. X.;
      Published:
      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]
    10. Influence of River-Induced Fronts on Hydrocarbon Transport: A Multiplatform Observational Study
      Personal Author:
      Androulidakis, Y.; Kourafalou, V.; Ozgokmen, T.; Garcia-Pineda, O.; Lund, B.; Le Henaff, M.; Hu, C. M.; Haus, B. K.; Novelli, G.; Guigand, C.; Kang, H.; Hole, L.; Horstmann, J.;
      Published:
      2018
      Source:
      Journal of Geophysical Research-Oceans, 123(5), 3259-3285.
      Series:
      CIMAS (Cooperative Institute for Marine and Atmospheric Studies)
      Description:
      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...
      File Type:
      Filetype[PDF - 4.12 MB]
    11. On the Fragile Relationship Between El Nino and California Rainfall
      Personal Author:
      Lee, S. K.; Lopez, H.; Chung, E. S.; DiNezio, P.; Yeh, S. W.; Wittenberg, A. T.;
      Published:
      2018
      Source:
      Geophysical Research Letters, 45(2), 907-915.
      Series:
      CIMAS (Cooperative Institute for Marine and Atmospheric Studies)
      Description:
      The failed influence of the 2015-2016 El Nino on California rainfall has renewed interest in the relationship between El Nino and U.S. rainfall variability. Here we perform statistical data analyses and simple model experiments to show that sufficien...
      File Type:
      Filetype[PDF - 5.14 MB]
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