Impact of North America snow cover on tropical cyclogenesis over the western North Pacific

Cao, Xi; Wu, Renguang; Sun, Ying; Wang, Zhibiao; Dai, Yu‐Hong; Song, Lei; Lan, Xiaoqing; Zhang, Xiping

doi:10.1088/1748-9326/ac3bff

Cited by 3 publications

(2 citation statements)

References 62 publications

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“…Major variations in monsoons and tropical cyclones (TCs) can cause serious natural disasters, and the characteristics and mechanisms of anomalous monsoons and TCs have become important topics in climate variability and prediction studies (Knutson et al 2010, Vishnu et al 2016, Cao et al 2021, Basconcillo and Moon 2022. Variations of the North American summer monsoon (NASM) and North Atlantic tropical cyclone (NATC) activities strongly influence climate anomalies in North America, with serious potential risk to life and property (Adams et al 1997, Higgins et al 1997, Rappaport 2000, Barlow et al 2011, Klotzbach et al 2018, Boos et al 2021.…”

Section: Introductionmentioning

confidence: 99%

Interannual synchronization of the North American summer monsoon and the North Atlantic tropical cyclone genesis frequency

Luo,

Weng,

Luo

et al. 2024

Environ. Res. Lett.

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Variations of the North American summer monsoon (NASM) and North Atlantic tropical cyclone (NATC) activities strongly influence climate anomalies in North America, with serious potential risk to life and property. Despite the scientific importance of this topic, the possible linkage between the NASM and the NATC genesis frequency remains unexplored. Here, we aim to examine the relationship between interannual variations of the NASM intensity and the NATC genesis frequency based on observations and Coupled Model Intercomparison Project Phase 6 (CMIP6) models. Our results show a strong association between the NASM intensity and the NATC genesis frequency during the extended boreal summer, with a good synchronization between their interannual variations. In years with stronger (weaker) NASM intensity, the NATC genesis frequency tends to be higher (lower). The observed NASM–NATC synchronization may be explained by two pathways: tropical-ocean-driven pathway and monsoon-heating-driven pathway. In the tropical-ocean-driven pathway, the tropical Pacific and Atlantic interbasin sea surface temperature (SST) anomalies play a critical role in bridging the NASM and NATC, by modulating the cross-Central American wind. Simulations of the tropical Pacific–Atlantic interbasin SST anomalies are critical for CMIP6 models to capture the observed linkage between the NASM and the vertical wind shear over the NATC main development region (MDR). In the monsoon-heating-driven pathway, the heating source due to the rainfall anomalies associated with the NASM can trigger atmospheric circulation anomalies through the Gill-type response, thereby affecting the NATC by changing the vertical wind shear over the MDR. This study demonstrates a connection between interannual variations of the NASM and the NATC genesis frequency, results of which can be used to advance our understanding of the monsoon–TC relationship and increase research focus on the interannual NASM–NATC synchronization in climate prediction.

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Section: Introductionmentioning

confidence: 99%

Interannual synchronization of the North American summer monsoon and the North Atlantic tropical cyclone genesis frequency

Luo,

Weng,

Luo

et al. 2024

Environ. Res. Lett.

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“…To improve the forecast accuracy of TCs, several attempts have been made to understand the ocean's role in cyclogenesis (Trenberth et al ., 2007; Pianezze et al ., 2018; Singh and Roxy, 2022). Similarly, some studies conducted in Europe and the United States revealed the importance of land characteristics such as surface roughness, snow cover, and soil moisture (SM) in the evolution of cyclones (Belušić et al ., 2019; Zhang et al ., 2019; Cao et al ., 2021). The intensity and heavy rainfall associated with the TCs have been attributed to multiscale and non‐linear interactions with weather systems, topography, inherent model error, and land surface conditions (Atallah and Bosart, 2003; May et al ., 2008; Kieu et al ., 2021).…”

Section: Introductionmentioning

confidence: 99%

Soil moisture–precipitation feedbacks in pre‐ and post‐monsoon landfalling tropical cyclones in Bay of Bengal

Navale

Karthikeyan

2023

Quart J Royal Meteoro Soc

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The Bay of Bengal (BoB) experiences an average of three to four tropical cyclones (TCs) annually. The high population density of surrounding countries often leads to disastrous consequences when a TC makes landfall. As a result, it is critical to understand the evolution and intensity of rainfall associated with a TC that originates in the BoB. In this study, we examine the impact of initial soil moisture (SM) conditions on the TC track, TC recycled precipitation, and other TC variables using the Weather Research and Forecasting (WRF) model upgraded with Eulerian water‐tagging capabilities. We simulated pre‐monsoon TCs Amphan, Titli, Viyaru and post‐monsoon cyclones Phailin, Titli and Helen originating in the BoB. We conducted sensitivity experiments with dry and wet initial SM conditions to determine the impact of initial SM changes on TCs. We also generated four control simulations for each TC by changing the initial time to assess the effect of internal model variability. Our results indicate that initial SM conditions impact TC more than the internal model variability. We find that changes in the initial SM affect the latent heat flux, which influences the temperature and the synoptic wind pattern over the entire domain, resulting in changes in the TC properties. We find the feedback of SM to TC precipitation (quantified as recycled precipitation) is stronger as the TC approaches the landfall. The post‐landfall recycling ratio for pre‐monsoon TCs is approximately 5%–10%, but is around 20%–30% for post‐monsoon TCs. We observe that the Viyaru, Titli and Helen TC tracks are more sensitive to the initial SM conditions compared to the other three TCs. In addition to SM, we find that factors such as proximity to land, and TC intensity also have a role in determining the quantity of recycled precipitation for a TC.

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An update on the influence of natural climate variability and anthropogenic climate change on tropical cyclones

Camargo,

Murakami,

Bloemendaal

et al. 2023

Tropical Cyclone Research and Review

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Impact of North America snow cover on tropical cyclogenesis over the western North Pacific

Cited by 3 publications

References 62 publications

Interannual synchronization of the North American summer monsoon and the North Atlantic tropical cyclone genesis frequency

Interannual synchronization of the North American summer monsoon and the North Atlantic tropical cyclone genesis frequency

Soil moisture–precipitation feedbacks in pre‐ and post‐monsoon landfalling tropical cyclones in Bay of Bengal

An update on the influence of natural climate variability and anthropogenic climate change on tropical cyclones

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