2022-2023 年长江流域三峡地区气候状况

IF 2.3 4区 地球科学 Q3 METEOROLOGY & ATMOSPHERIC SCIENCES
Tong Cui, Xianyan Chen, Xukai Zou, Linhai Sun, Qiang Zhang, Hongling Zeng
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引用次数: 0

摘要

基于长江流域三峡地区的日观测资料和全球再分析资料,分析了三峡地区2022年和2023年的气候特征、气候事件和气象灾害。2022年和2023年长江流域地区年平均气温分别较常年偏高0.8 ℃和0.4 ℃,是近十年来最暖的两年。2022 年,TGR 经历了有记录以来最温暖的夏季。平均气温比常年高 2.4 °C,夏季有 24.8 天超过平均高温日。2022 年至 2023 年期间,德涅斯特河沿岸地区的降雨量变化很大。年降雨量比正常值低 18.4%,该地区大部分地区比正常值干燥。相比之下,2023 年的降水量大大高于长期平均值,几乎全年都高于正常值。这两年的平均风速变化极小。不过,与 2022 年相比,2023 年的雾日数和相对湿度都有所增加。2022-2023年,天津地区主要出现了极端高温、区域性暴雨洪涝、阴雨、倒春寒等气象灾害。分析表明,西太平洋副热带高压异常和南亚高压东移持续异常是导致2022年夏季破纪录高温持续增强的两个重要原因。摘要基于长江三峡地区观测资料和全球再分析资料,分析了该地区 2022-2023年气候特征、酸雨状况以及主要天气气候事件。2022 年和 2023 年三峡地区平均气温分别较常年偏高 0.8 ℃和 0.4 ℃, 是近十年来最暖的两年, 特别是 2022 年夏季出现破记录极端高温; 2022 年三峡地区降水量较常年偏少 18.4 %, 2023 年降水量转为偏多 15.3 %。在这两年中该地区主要出现了极端高温, 区域性暴雨洪涝, 连阴雨和倒春寒等气候事件。分析表明,西太平洋副热带高压和南亚高压协同异常是 2022 年夏季极端高温维持的两个重要因素。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Climate state of the Three Gorges Region in the Yangtze River basin in 2022–2023

Based on daily observation data of the Three Gorges Region (TGR) of the Yangtze River basin and global reanalysis data, the climate characteristics, climate events, and meteorological disasters of the TGR in 2022 and 2023 were analyzed. For the TGR, the average annual temperature for 2022 and 2023 was 0.8 °C and 0.4 °C higher than normal, respectively, making them the two warmest years in the past decade. In 2022, the TGR experienced its warmest summer on record. The average air temperature was 2.4 °C higher than the average, and there were 24.8 days of above-average high temperature days during summer. Rainfall in the TGR varied significantly between 2022 and 2023. Annual rainfall was 18.4 % below normal and drier than normal in most parts of the region. In contrast, the precipitation in 2023 was considerably higher than the long-term average, and above normal for almost the entire year. The average wind speed exhibited minimal variation between the two years. However, the number of foggy days and relative humidity increased in 2023 compared to 2022. In 2022–2023, the TGR mainly experienced meteorological disasters such as extreme high temperatures, regional heavy rain and flooding, overcast rain, and inverted spring chill. Analysis indicates that the abnormal western Pacific subtropical high and the abnormal persistence of the eastward-shifted South Asian high were the two important drivers of the durative enhancement of record-breaking high temperature in the summer of 2022.

摘要

基于长江三峡地区观测资料和全球再分析资料, 分析了该地区 2022–2023年气候特征, 酸雨状况以及主要天气气候事件. 2022 年和2023年三峡地区平均气温分别较常年偏高0.8 °C和0.4 °C, 是近十年来最暖的两年, 特别是2022年夏季出现破记录极端高温; 2022年三峡地区降水量较常年偏少18.4 %, 2023年降水量转为偏多15.3 %. 在这两年中该地区主要出现了极端高温, 区域性暴雨洪涝, 连阴雨和倒春寒等气候事件. 分析表明, 西太平洋副热带高压和南亚高压协同异常是2022年夏季极端高温维持的两个重要因素.

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来源期刊
Atmospheric and Oceanic Science Letters
Atmospheric and Oceanic Science Letters METEOROLOGY & ATMOSPHERIC SCIENCES-
CiteScore
4.20
自引率
8.70%
发文量
925
审稿时长
12 weeks
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