Diurnal Cycle of Wind Speed and Precipitation Over the Northern Australia Coastal Region: CYGNSS Observations

Hien X. Bui; Eric D. Maloney; Ewan Short; Emily M. Riley Dellaripa

doi:10.1029/2023GL103005

Diurnal Cycle of Wind Speed and Precipitation Over the Northern Australia Coastal Region: CYGNSS Observations

Hien X. Bui
, Eric D. Maloney
, Ewan Short
, Emily M. Riley Dellaripa

School of Earth Atmosphere and Environment

Research output: Contribution to journal › Article › Research › peer-review

11 Citations (Scopus)

Abstract

The diurnal cycle of precipitation and its associated land-sea breeze circulation over coastal northern Australia are investigated using surface wind speed and enthalpy (latent and sensible heat) fluxes from the Cyclone Global Navigation Satellite System. Composite results during the austral summer of 2018–2022 show that diurnal precipitation propagates westward from the Cape York Peninsula into the Gulf of Carpentaria. The diurnal cycle of precipitation and surface wind speed are strongly coupled, with the wind speed maximum slightly leading the precipitation maximum. Additionally, analysis of the moist static energy budget shows that surface fluxes help support the westward-propagation of diurnal precipitation. These results—based on novel satellite data and reanalysis—are consistent with previous studies that have examined the impact of the land-sea breeze on the diurnal cycle of precipitation. The results provide a benchmark for model representation of this important atmosphere-ocean-land interaction.

Original language	English
Article number	e2023GL103005
Number of pages	12
Journal	Geophysical Research Letters
Volume	50
Issue number	8
DOIs	https://doi.org/10.1029/2023GL103005
Publication status	Published - 28 Apr 2023

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10.1029/2023GL103005Licence: CC BY-NC-ND

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title = "Diurnal Cycle of Wind Speed and Precipitation Over the Northern Australia Coastal Region: CYGNSS Observations",

abstract = "The diurnal cycle of precipitation and its associated land-sea breeze circulation over coastal northern Australia are investigated using surface wind speed and enthalpy (latent and sensible heat) fluxes from the Cyclone Global Navigation Satellite System. Composite results during the austral summer of 2018–2022 show that diurnal precipitation propagates westward from the Cape York Peninsula into the Gulf of Carpentaria. The diurnal cycle of precipitation and surface wind speed are strongly coupled, with the wind speed maximum slightly leading the precipitation maximum. Additionally, analysis of the moist static energy budget shows that surface fluxes help support the westward-propagation of diurnal precipitation. These results—based on novel satellite data and reanalysis—are consistent with previous studies that have examined the impact of the land-sea breeze on the diurnal cycle of precipitation. The results provide a benchmark for model representation of this important atmosphere-ocean-land interaction.",

author = "Bui, \{Hien X.\} and Maloney, \{Eric D.\} and Ewan Short and \{Riley Dellaripa\}, \{Emily M.\}",

note = "Funding Information: This study was supported by Australian Research Council under Grant CE170100023. EDM and ERD were support by NASA CYGNSS Grant 80NSSC21K1004. We thank the NASA CYGNSS team for providing the wind speed and enthalpy fluxes products. Open access publishing facilitated by Monash University, as part of the Wiley ‐ Monash University agreement via the Council of Australian University Librarians. Funding Information: This study was supported by Australian Research Council under Grant CE170100023. EDM and ERD were support by NASA CYGNSS Grant 80NSSC21K1004. We thank the NASA CYGNSS team for providing the wind speed and enthalpy fluxes products. Open access publishing facilitated by Monash University, as part of the Wiley - Monash University agreement via the Council of Australian University Librarians. Publisher Copyright: {\textcopyright} 2023. The Authors.",

year = "2023",

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AU - Riley Dellaripa, Emily M.

N1 - Funding Information: This study was supported by Australian Research Council under Grant CE170100023. EDM and ERD were support by NASA CYGNSS Grant 80NSSC21K1004. We thank the NASA CYGNSS team for providing the wind speed and enthalpy fluxes products. Open access publishing facilitated by Monash University, as part of the Wiley ‐ Monash University agreement via the Council of Australian University Librarians. Funding Information: This study was supported by Australian Research Council under Grant CE170100023. EDM and ERD were support by NASA CYGNSS Grant 80NSSC21K1004. We thank the NASA CYGNSS team for providing the wind speed and enthalpy fluxes products. Open access publishing facilitated by Monash University, as part of the Wiley - Monash University agreement via the Council of Australian University Librarians. Publisher Copyright: © 2023. The Authors.

PY - 2023/4/28

Y1 - 2023/4/28

N2 - The diurnal cycle of precipitation and its associated land-sea breeze circulation over coastal northern Australia are investigated using surface wind speed and enthalpy (latent and sensible heat) fluxes from the Cyclone Global Navigation Satellite System. Composite results during the austral summer of 2018–2022 show that diurnal precipitation propagates westward from the Cape York Peninsula into the Gulf of Carpentaria. The diurnal cycle of precipitation and surface wind speed are strongly coupled, with the wind speed maximum slightly leading the precipitation maximum. Additionally, analysis of the moist static energy budget shows that surface fluxes help support the westward-propagation of diurnal precipitation. These results—based on novel satellite data and reanalysis—are consistent with previous studies that have examined the impact of the land-sea breeze on the diurnal cycle of precipitation. The results provide a benchmark for model representation of this important atmosphere-ocean-land interaction.

AB - The diurnal cycle of precipitation and its associated land-sea breeze circulation over coastal northern Australia are investigated using surface wind speed and enthalpy (latent and sensible heat) fluxes from the Cyclone Global Navigation Satellite System. Composite results during the austral summer of 2018–2022 show that diurnal precipitation propagates westward from the Cape York Peninsula into the Gulf of Carpentaria. The diurnal cycle of precipitation and surface wind speed are strongly coupled, with the wind speed maximum slightly leading the precipitation maximum. Additionally, analysis of the moist static energy budget shows that surface fluxes help support the westward-propagation of diurnal precipitation. These results—based on novel satellite data and reanalysis—are consistent with previous studies that have examined the impact of the land-sea breeze on the diurnal cycle of precipitation. The results provide a benchmark for model representation of this important atmosphere-ocean-land interaction.

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Diurnal Cycle of Wind Speed and Precipitation Over the Northern Australia Coastal Region: CYGNSS Observations

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Diurnal Cycle of Wind Speed and Precipitation Over the Northern Australia Coastal Region: CYGNSS Observations

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ARC Centre of Excellence for Climate Extremes

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