Combined Use of Satellite Observations and Global Hawk Unmanned Aircraft Dropwindsondes for Improved Tropical Cyclone Analyses and Forecasts

Christophersen, Hui; Atlas, Robert; Aksoy, Altug; Dunion, Jason

doi:10.1175/waf-d-17-0167.1

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Combined Use of Satellite Observations and Global Hawk Unmanned Aircraft Dropwindsondes for Improved Tropical Cyclone Analyses and Forecasts

2018
By Christophersen, Hui ; Atlas, Robert ; Aksoy, Altug ; ...
Source: Weather and Forecasting, 33(4), 1021-1031.

[PDF-1.10 MB]

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Journal Title:

Weather and Forecasting
Personal Author:

Christophersen, Hui ; Atlas, Robert ; Aksoy, Altug ; Dunion, Jason

Christophersen, Hui ; Atlas, Robert ; Aksoy, Altug ; Dunion, Jason Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; AOML (Atlantic Oceanographic and Meteorological Laboratory) ; CIMAS (Cooperative Institute for Marine and Atmospheric Studies)

OAR (Oceanic and Atmospheric Research) ; AOML (Atlantic Oceanographic and Meteorological Laboratory) ; CIMAS (Cooperative Institute for Marine and Atmospheric Studies) Less -
Description:

This 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.
Source:

Weather and Forecasting, 33(4), 1021-1031.
DOI:

https://doi.org/10.1175/waf-d-17-0167.1
Document Type:

Journal Article
Funding:

Grant no. NA14OAR4830172
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Submitted
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urn:sha256:02e4841413b5d4d4cfbb643b4f349fa186d5e086552a455be5ad59de88a2bda7
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https://repository.library.noaa.gov/view/noaa/18751/noaa_18751_DS1.pdf
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Combined Use of Satellite Observations and Global Hawk Unmanned Aircraft Dropwindsondes for Improved Tropical Cyclone Analyses and Forecasts

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