The Impact of Incremental Analysis Update on Regional Simulations for Typhoons

Ge, Yangjinxi; Lei, Lili; Whitaker, Jeffrey S.; Tan, Zhe‐Min

doi:10.1029/2022ms003084

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The Impact of Incremental Analysis Update on Regional Simulations for Typhoons

2022
By Ge, Yangjinxi ; Lei, Lili ; Whitaker, Jeffrey S. ; ...
Source: Journal of Advances in Modeling Earth Systems, 14(10)

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Journal Title:

Journal of Advances in Modeling Earth Systems
Personal Author:

Ge, Yangjinxi ; Lei, Lili ; Whitaker, Jeffrey S. ; Tan, Zhe‐Min

Ge, Yangjinxi ; Lei, Lili ; Whitaker, Jeffrey S. ; Tan, Zhe‐Min Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; ESRL (Earth System Research Laboratory) ; PSL (Physical Sciences Laboratory)

OAR (Oceanic and Atmospheric Research) ; ESRL (Earth System Research Laboratory) ; PSL (Physical Sciences Laboratory) Less -
Description:

The analyses produced by intermittent data assimilation methods can be dynamically inconsistent and unbalanced. By gradually distributing the analysis increment along model integration, the incremental analysis update (IAU) is effective to combat the inconsistences and imbalances. Different implementations of IAU with time constant or time-varying increments using different increment frequencies are systematically evaluated for regional simulations, especially for fast-moving typhoons. Results show that experiments with IAU generally produce smaller forecast errors of temperature, specific humidity, and wind speed than experiment CTRL without initialization. Three-dimensional IAUs (3DIAUs) with time-constant increments
Keywords:

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Environmental Chemistry General Earth And Planetary Sciences Global And Planetary Change
Source:

Journal of Advances in Modeling Earth Systems, 14(10)
DOI:

https://doi.org/10.1029/2022ms003084
ISSN:

1942-2466;1942-2466;
Format:

PDF
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
License:

https://creativecommons.org/licenses/by-nc/4.0/
Rights Information:

CC BY-NC
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Library
Main Document Checksum:

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urn:sha256:5b6cb4fe5e10ee5859e1b34e8ed197f4f927af6057b7d8eda7dccd82f1fdcc9e
Download URL:

https://repository.library.noaa.gov/view/noaa/53235/noaa_53235_DS1.pdf
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