A case study of Chlorophyll a response to tropical cyclone Wind Pump considering Kuroshio invasion and air-sea heat exchange

Liu, Yupeng; Tang, Danling; Tang, Shilin; Morozov, Evgeny; Liang, Wenzhao; Sui, Yanping

doi:10.1016/j.scitotenv.2020.140290

Cited by 18 publications

(12 citation statements)

References 51 publications

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“…These changes will inevitably affect the growth of phytoplankton in the water column and, in turn, the Chl-a concentration. After the TS passage, the overall Chl-a concentration at S1, S3, and S4 showed an increasing trend (Figure 5B), roughly consistent with earlier studies (Wetz and Paerl, 2008;Zhao et al, 2017;Liu et al, 2020).…”

Section: Effects Of the Ts On Chl-a Concentrationsupporting

confidence: 90%

Different Responses of Chlorophyll a to the Passage of the Tropical Storm Wipha (2019) in the Coastal Waters of the Northern Beibu Gulf

et al. 2022

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Tropical storms (TS) are important drivers of short-term changes and affects the coastal and marine environment. Based on in situ observational data from four locations in the coastal area of the northern Beibu Gulf and satellite data, we analyzed the changes in temperature, salinity, and turbidity during the transit of TS “Wipha” in 2019 and assessed the environmental factors controlling chlorophyll a concenteation (Chl-a) increases in the coastal area. Our results showed that in the coastal area, the growth of phytoplankton after the TS was mainly controlled by the nutrient and light availability. The increased input of freshwater by TS, including direct inputs from rainfall and increased river discharge, reduced the salinity. The decrease in salinity may indicate an increased input of nutrient-rich freshwater at all four stations (nutrients input: S1>S2>S3>S4). Nutrient concentration at S1, S2, and S3 implied by salinity was high, but that at S4 was limited. The shorter recovery time of turbidity after TS indicated the faster improvement of light conditions in this area [recovery time: S4 (2 days)< S1 (3 days)< S3 (5 days)< S2 (10 days)]. The high turbidity associated with poor light penetration was an important factor limiting phytoplankton growth at station 2, with a slow recovery of the turbidity to pre-TS levels. The rapid recovery of the turbidity to the pre-TS levels at S1, S3, and S4 suggested good light conditions soon after the TS, and probably led to a significant increase in Chl-a after the TS ([Chl-a]: S1>S3>S4). The less of an increase of Chl-a at S4 was not only related to nutrient restriction but also related to weak mixing of the water column, while the least significant decrease in the SST at S4 implied that the enhancing mixing after TS was limited.

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Section: Effects Of the Ts On Chl-a Concentrationsupporting

confidence: 90%

Different Responses of Chlorophyll a to the Passage of the Tropical Storm Wipha (2019) in the Coastal Waters of the Northern Beibu Gulf

et al. 2022

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“…On average, 10.3 typhoons affect the SCS every year, occurring frequently from July to September, including typhoons moving westward from the Northwest Pacific and those generated in the southern part of the SCS [88][89][90]. Previous studies have clarified that typhoons can cause local vertical mixing or entrainment and upwelling in the SCS, which can bring deeper, nutrient-rich water from the subsurface to the surface light-transmitting layer, thereby promoting an increase in the chl-a concentration and oceanic phytoplankton/primary productivity [18,66,[91][92][93][94][95][96][97][98][99]. To explore the contribution of typhoons, an extreme synoptic weather pattern, to each LSCP, we removed the samples during typhoon events and recalculated the chl-a pattern in each LSCP using the following steps.…”

Section: Contribution Of Typhoons Under Different Lscpsmentioning

confidence: 99%

“…In addition, ocean color data such as chl-a is used to provide valuable information about ocean surface circulation and to track mesoscale to submesoscale features [16,17]. Thus, observations and research of marine biophysical environmental changes at different spatiotemporal scales have become focal points in this field of study [6,[18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…Current research on chl-a at multiple spatiotemporal scales in the SCS tends to focus on seasonal, interannual and interdecadal variability [19,20,38,39]. In contrast, on short-term synoptic scales in the SCS, most studies have mainly concentrated on local marine biophysical environmental changes before and after the passage of a typhoon [4,18,23,[40][41][42][43][44]. Different atmospheric circulation changes on the synoptic scale will also affect changes in meteorological variables, such as light, air temperature, precipitation and wind in the sea area, and these meteorological variables continue to act on the upper-ocean biophysical environment.…”

Section: Introductionmentioning

confidence: 99%

“…Different atmospheric circulation changes on the synoptic scale will also affect changes in meteorological variables, such as light, air temperature, precipitation and wind in the sea area, and these meteorological variables continue to act on the upper-ocean biophysical environment. Studying the relationship between different atmospheric circulation patterns at synoptic scales and the upper-ocean environment is helpful to supplement our understanding of the impact of wind-pumps on the ocean [4,18], and it is also has great scientific significance for understanding the formation mechanism of the short-term, upperocean biophysical environment and its monitoring, prediction and evaluation [45][46][47]. The weather in the SCS in summer is complex; the southwest monsoon is strong, accompanied by typhoons, low-level jets and other extreme weather [4,7,8,10,19,36] which has a more significant impact on the ecological environment of the upper ocean in the SCS.…”

Section: Introductionmentioning

confidence: 99%

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Association between the Biophysical Environment in Coastal South China Sea and Large-Scale Synoptic Circulation Patterns: The Role of the Northwest Pacific Subtropical High and Typhoons

et al. 2021

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Synoptic weather conditions can modulate short-term variations in the marine biophysical environment. However, the impact of large-scale synoptic circulation patterns (LSCPs) on variations in chlorophyll-a (chl-a) and sea surface temperature (SST) in the South China Sea (SCS) remains unclear. Using a T-mode principal component analysis method, four types of LSCP related to the Northwest Pacific subtropical high are objectively identified over the SCS for the summers of 2015–2018. Type 1 exhibits a lower chl-a concentration of <0.3 mg m−3 offshore of southern Vietnam with respect to the other three types. For Type 2, the high chl-a concentration zone (>0.3 mg m−3) along the coast of Guangdong exhibits the widest areas of coverage. The offshore chl-a bloom jet (>0.3 mg m−3) formed in southern Vietnam is the most obvious under Type 3. Under Type 4, the high chl-a concentration zone along the coast of Guangdong is the narrowest, while the chl-a concentration in the middle of the SCS is the lowest (<0.1 mg m−3). These type differences are mostly caused by the various monsoon circulations, local ocean mesoscale processes and resultant differences in localized precipitation, wind vectors, photosynthetically active radiation and SST. In particular, precipitation over land helps to transport nutrients from the land to the shore, which is conducive to the increase of chl-a. However, precipitation over ocean will dilute the upper seawater and reduce chl-a. Typhoons pump the deeper seawater with nutrients to the surface, and therefore make a positive contribution to chl-a in most offshore areas; however, they also disturb shallower water and hinder the growth of phytoplankton, making a negative contribution near the coast of Guangdong. In general, our findings will provide a better understanding of wind pump impact: the responses of marine biophysical environments to LSCPs.

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Effects of multiple dynamic processes on chlorophyll variation in the Luzon Strait in summer 2019 based on glider observation

Wang

Zhang

et al. 2023

J. Ocean. Limnol.

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A case study of Chlorophyll a response to tropical cyclone Wind Pump considering Kuroshio invasion and air-sea heat exchange

Cited by 18 publications

References 51 publications

Different Responses of Chlorophyll a to the Passage of the Tropical Storm Wipha (2019) in the Coastal Waters of the Northern Beibu Gulf

Different Responses of Chlorophyll a to the Passage of the Tropical Storm Wipha (2019) in the Coastal Waters of the Northern Beibu Gulf

Association between the Biophysical Environment in Coastal South China Sea and Large-Scale Synoptic Circulation Patterns: The Role of the Northwest Pacific Subtropical High and Typhoons

Effects of multiple dynamic processes on chlorophyll variation in the Luzon Strait in summer 2019 based on glider observation

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