Variational assimilation of web camera-derived estimates of visibility for Alaska aviation

Carley, Jacob R.; Matthews, Michael; Morris, Matthew T.; De Pondeca, Manuel S. F. V.; Colavito, Jenny; Yang, Runhua

doi:10.1017/exp.2020.66

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Variational assimilation of web camera-derived estimates of visibility for Alaska aviation

2021
By Carley, Jacob R. ; Matthews, Michael ; Morris, Matthew T. ; ...
Source: Experimental Results, 2

[PDF-1.59 MB]

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Journal Title:

Experimental Results
Personal Author:

Carley, Jacob R. ; Matthews, Michael ; Morris, Matthew T. ; De Pondeca, Manuel S. F. V. ; Colavito, Jenny ; ... More +

Carley, Jacob R. ; Matthews, Michael ; Morris, Matthew T. ; De Pondeca, Manuel S. F. V. ; Colavito, Jenny ; Yang, Runhua Less -
NOAA Program & Office:

NWS (National Weather Service) ; NCEP (National Centers for Environmental Prediction)

NWS (National Weather Service) ; NCEP (National Centers for Environmental Prediction) Less -
Description:

The Real Time Mesoscale Analysis (RTMA), a two-dimensional variational analysis algorithm, is used to provide hourly analyses of surface sensible weather elements for situational awareness at spatial resolutions of 3 km over Alaska. In this work we focus on the analysis of horizontal visibility in Alaska, which is a region prone to weather related aviation accidents that are in part due to a relatively sparse observation network. In this study we evaluate the impact of assimilating estimates of horizontal visibility derived from a novel network of web cameras in Alaska with the RTMA. Results suggest that the web camera-derived estimates of visibility can capture low visibility conditions and have the potential to improve the RTMA visibility analysis under conditions of low instrument flight rules and instrument flight rules.
Keywords:

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Visibility Analysis Aviation Data Assimilation Meteorology Visibility
Source:

Experimental Results, 2
DOI:

https://doi.org/10.1017/exp.2020.66
Document Type:

Journal Article
Place as Subject:

Alaska
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CC BY
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Submitted
Main Document Checksum:

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urn:sha256:29e28ea3246abdfe8c76152667df1f64ace8a029d867e668b69814dcb7af1f81
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https://repository.library.noaa.gov/view/noaa/29049/noaa_29049_DS1.pdf
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Variational assimilation of web camera-derived estimates of visibility for Alaska aviation

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