Recently Strengthened Influence of ENSO on the Wintertime East Asian Surface Air Temperature

Gong, Hainan; Wang, Lin; Chen, Wen

doi:10.3390/atmos10110720

Cited by 11 publications

(6 citation statements)

References 40 publications

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“…During the 2015/16 winter, average precipitation levels in south China (Guangdong, Guangxi and Hainan Provinces) reached historic values, exceeding those in perennial years by more than 1.6 times [53]. At the same time, the El Niño phenomenon also had a large impact on the variability of the atmosphere [54][55][56]. Thus, a series of related issues resulting from policy regulation and the El Niño phenomenon moved the median center of atmospheric XCO 2 concentrations to the east of China.…”

Section: Interannual Variations In Xcomentioning

confidence: 99%

Spatial and Temporal Variations of Atmospheric CO2 Concentration in China and Its Influencing Factors

Shi

Zang

et al. 2020

Atmosphere

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Over the past few decades, concentrations of carbon dioxide (CO2), a key greenhouse gas, have risen at a global rate of approximately 2 ppm/a. China is the largest CO2 emitter and is the principle contributor to the increase in global CO2 levels. Based on a satellite-retrieved atmospheric carbon dioxide column average dry air mixing ratio (XCO2) dataset, derived from the greenhouse gas observation satellite (GOSAT), this paper evaluates the spatial and temporal variations of XCO2 characteristics in China during 2009–2016. Moreover, the factors influencing changes in XCO2 were investigated. Results showed XCO2 concentrations in China increased at an average rate of 2.28 ppm/a, with significant annual seasonal variations of 6.78 ppm. The rate of change of XCO2 was greater in south China compared to other regions across China, with clear differences in seasonality. Seasonal variations in XCO2 concentrations across China were generally controlled by vegetation dynamics, characterized by the Normalized Difference Vegetation Index (NDVI). However, driving factors exhibited spatial variations. In particular, a distinct belt (northeast–southwest) with a significant negative correlation (r < −0.75) between XCO2 and NDVI was observed. Furthermore, in north China, human emissions were identified as the dominant influencing factor of total XCO2 variations (r > 0.65), with forest fires taking first place in southwest China (r > 0.47). Our results in this study can provide us with a potential way to better understand the spatiotemporal changes of CO2 concentration in China with NDVI, human activity and biomass burning, and could have an enlightening effect on slowing the growth of CO2 concentration in China.

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Section: Interannual Variations In Xcomentioning

confidence: 99%

Spatial and Temporal Variations of Atmospheric CO2 Concentration in China and Its Influencing Factors

Shi

Zang

et al. 2020

Atmosphere

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“…Zhang & Delworth, 2016), and this behavior may have the possibility to weaken the AL variability. Hence, both the effects of the internal climate variability, such as the PDO, and global warming on the weakened AL variability should be considered in future work (e.g., H. Gong et al, 2019;Roy, 2018). In addition, the magnitude of the SH variability in the observation also shows decadal variations, and it has a strengthening trend after the late-1990s (Figure 6a).…”

Section: Discussionmentioning

confidence: 99%

“…It is indicated that the underlying SST variability over the North Pacific related to the Pacific Decadal Oscillation (PDO) can affect the decade changes of the AL, with the warm (cold) phase of the PDO corresponding to a strong (weak) AL magnitude (e.g., S. Chen et al, 2021;H. Gong et al, 2019;Oh et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

“…Recent studies suggested that the PDO would become weaker and shift to a higher frequency via the oceanic internal Rossby wave in response to global warming (C. Fang et al., 2014; L. Zhang & Delworth, 2016), and this behavior may have the possibility to weaken the AL variability. Hence, both the effects of the internal climate variability, such as the PDO, and global warming on the weakened AL variability should be considered in future work (e.g., H. Gong et al., 2019; Roy, 2018).…”

Section: Discussionmentioning

confidence: 99%

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Diminished Impact of the East Asian Winter Monsoon on the Maritime Continent Rainfall After the Late‐1990s Tied to Weakened Siberian High–Aleutian Low Covariation

et al. 2023

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“…It has been pointed out that the Kuroshio anticyclonic anomalies can significantly modulate the influences of ENSO on the western Pacific winter climate (Gong et al, 2019). The existence of the Kuroshio anticyclone may decrease the pressure gradient between East Asia and the North Pacific, which facilitates the northward extension of the southerly wind anomalies from the anticyclone over the Philippines.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Monthly Variations of the Winter Precipitation over the Philippines During the Mature Phase of Eastern Pacific El Niño

et al. 2021

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The influence of ENSO events on winter precipitation anomalies in the Philippines has been well known since decades, but whether this effect is different between months needs further exploration. In this study, the monthly variations of precipitation over the Philippines in winter during the mature phases of ENSO events are investigated with datasets of reanalysis and observations from 1979 to 2019. Results indicate that only the eastern Pacific (EP) El Niño shows different influences on the Philippines winter precipitation among different months. In December during mature EP El Niño events, precipitation deficiency is not significant over the whole Philippines, whereas in January and February, precipitation decreases significantly over the southern Philippines as well as the areas to the southeast of the Philippines. Besides, the correlation between consecutive dry days over the southeast Philippines and ENSO is significantly positive in January and February but not in December. The eastward propagation of EP El Niño–related anomalous anticyclone over the western North Pacific (WNPAC) from December to February is proved responsible for the changed relationship between EP El Niño and precipitation. In December, the center of the WNPAC is located to the southeast of the Indo-China Peninsula, inducing weak lower-level wind anomalies and, consequently, weak vertical movement and water vapor transport anomalies over the Philippines, which exerts limited influence on the local precipitation. In January and February, by contrast, the center of WNPAC is located to the southeast of the Philippines, and therefore the southern Philippines is occupied by anticyclonic moisture transports and downward vertical motions, favoring less precipitations and larger than normal consecutive dry days over there.

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Recently Strengthened Influence of ENSO on the Wintertime East Asian Surface Air Temperature

Cited by 11 publications

References 40 publications

Spatial and Temporal Variations of Atmospheric CO2 Concentration in China and Its Influencing Factors

Spatial and Temporal Variations of Atmospheric CO2 Concentration in China and Its Influencing Factors

Diminished Impact of the East Asian Winter Monsoon on the Maritime Continent Rainfall After the Late‐1990s Tied to Weakened Siberian High–Aleutian Low Covariation

Monthly Variations of the Winter Precipitation over the Philippines During the Mature Phase of Eastern Pacific El Niño

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