The increase of temperature and precipitation in the different regions of Tarim River Basin has spatial and temporal heterogeneity over 1961-2021. DOI Creative Commons
Hongjie Wang,

Aihaiti Ailiyaer,

Ali Mamtimin

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 5, 2024

Abstract Based on the monthly temperature and precipitation observation data of 42 national meteorological stations in Tarim River Basin (TRB) from 1961 to 2021, spatiotemporal variation characteristics differences whole basin its sub-basin were explored quantified. The results showed that: 1) average annual increase rate 0.2 ℃/10a 7.1 mm/10a during respectively, with significant spatial temporal distribution differences. 2) first mode Empirical Orthogonal Function (EOF1) for both a consistent pattern, while EOF2 an opposite pattern. 3) In TRB sub-basin, difference between highest lowest rates was 0.1 ℃/10a. Similarly, (in Aksu Basin) Cherchen Mainstream Region) 0.9 mm/10a. 4) Kaidu had significantly lower winter mean -9.69 ℃ compared other sub-basins. Additionally, seasonal varied greatly among sub-basins, particularly summer. 5) strong positive correlation global (coefficients over 0.5 most sites), weaker but still positive, ranging 0.5. Significant correlations observed temperatures, especially summer autumn. Seasonal generally notable impacts autumn, sub-basins like Hotan Basin.

Language: Английский

Projections on Regional Climate and Compound Events in East Asia Based on QDM‐Corrected Multiple High‐Resolution CORDEX Simulations DOI Open Access
Jueying Chen, Xiaoyu Zhu, Jianping Tang

et al.

International Journal of Climatology, Journal Year: 2025, Volume and Issue: unknown

Published: March 11, 2025

ABSTRACT Following the Coordinated Regional Downscaling Experiment East Asia Phase II (CORDEX‐EA‐II) setting, two regional climate models (RCMs) driven by four global (GCMs) have been used to provide change information on surface air temperature and daily precipitation. A trend‐preserving bias correction method, quantile delta mapping (QDM), is first validated for historical period of 1981–2005 then applied future 2040–2060 under Representative Concentration Pathway (RCP) 8.5 scenarios. Results show that QDM competent in correcting model biases temperature, precipitation compound events (CEs, defined as concurrent occurrence anomalies) both spatial distributions annual cycles. For assessments, a widespread warming projected over region, with average changes higher than 1.6°C. Changes are more region‐variated. Increased most significant northwestern part CORDEX‐EA some also present decreased southeastern China. Climate CEs correspond effect warming; RCMs increase frequency hot an obvious decrease cold‐dry CEs. These results expected be useful assessments better understanding technique situations.

Language: Английский

Citations

0
The Tibetan Plateau Westerly Jet Stream During July–August and Its Linkage With Precipitation in the Tibetan Plateau DOI Open Access

Yuhan Feng,

Sulan Nan, Ge Liu

et al.

International Journal of Climatology, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

ABSTRACT Using gridded and station‐observed precipitation datasets from the China National Meteorological Information Center, GPCC data, ERA5 reanalysis data 1980 to 2021, this paper identifies a westerly jet north of Tibetan Plateau (TP) during July–August, which differs typical East Asian is named TP (TPJ). The relationship between meridional location TPJ in associated mechanism are investigated. results show that closely related TPJ. When located farther north, more‐than‐normal occurs central‐western TP, less‐than‐normal southern part eastern thereby constituting an east–west antiphase mode. This mode reversed when south. four‐quadrant conceptual model stream can explain link precipitation. anomalous meridional‐vertical circulation cell appears at entrance TPJ, with upward branch cell. motion conducive convergence water vapour increase total cloud cover produces TP. Meanwhile, exit opposite entrance. downward governs causing divergence suppressing suggest should be considered special system exploring cause summer

Language: Английский

Citations

0
Changes in Vegetation Phenology and Water Use Efficiency Driven by Warming and Wetting in Northwest China DOI
Wenqing Zhang,

Yanling Bai,

Liu Liu

et al.

Hydrological Processes, Journal Year: 2025, Volume and Issue: 39(3)

Published: March 1, 2025

ABSTRACT Vegetation phenology is a key indicator of climate change and plays vital role in ecosystem water use efficiency (WUE), which balances carbon sequestration loss. As global accelerates, understanding its effects on WUE essential for comprehending dynamics carbon–water cycles. Northwest China (NWC), one the driest regions at similar latitudes, experiencing rapid shift from warm‐dry to warm‐wet climate, posing significant challenges fragile ecosystem. In this study, we used reanalysis satellite remote sensing datasets analyse changes start growing season (SOS), end (EOS) length (LOS) various vegetation types NWC 1982 2015. The focus was how temperature precipitation variations influenced phenological their subsequent impacts Gross Primary Productivity (GPP), evapotranspiration (ET) WUE. Our results show that has experienced warming wetting trend, with SOS advancing by 0.04 days per year EOS delaying year, leading notable extension LOS 0.08 annually. Temperature primarily drives advance, while croplands grasslands shifts forests shrublands dictate delays. increased rate 0.005 gC m −2 mm −1 , influencing GPP ET both directly indirectly through changes. findings underscore cascading Changes have had fluxes, varying across different types. This study provides valuable insights into response mechanisms arid semi‐arid offers critical information sustainable management resources agriculture NWC.

Language: Английский

Citations

0
Development of high-resolution summer precipitation data for Xinjiang Region by fusing satellite retrieval products and Gauge observations DOI
Qian Huang, Ze Chen, Qing He

et al.

Atmospheric Research, Journal Year: 2025, Volume and Issue: unknown, P. 108105 - 108105

Published: March 1, 2025

Language: Английский

Citations

0
The increase of temperature and precipitation in the different regions of Tarim River Basin has spatial and temporal heterogeneity over 1961-2021. DOI Creative Commons
Hongjie Wang,

Aihaiti Ailiyaer,

Ali Mamtimin

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 5, 2024

Abstract Based on the monthly temperature and precipitation observation data of 42 national meteorological stations in Tarim River Basin (TRB) from 1961 to 2021, spatiotemporal variation characteristics differences whole basin its sub-basin were explored quantified. The results showed that: 1) average annual increase rate 0.2 ℃/10a 7.1 mm/10a during respectively, with significant spatial temporal distribution differences. 2) first mode Empirical Orthogonal Function (EOF1) for both a consistent pattern, while EOF2 an opposite pattern. 3) In TRB sub-basin, difference between highest lowest rates was 0.1 ℃/10a. Similarly, (in Aksu Basin) Cherchen Mainstream Region) 0.9 mm/10a. 4) Kaidu had significantly lower winter mean -9.69 ℃ compared other sub-basins. Additionally, seasonal varied greatly among sub-basins, particularly summer. 5) strong positive correlation global (coefficients over 0.5 most sites), weaker but still positive, ranging 0.5. Significant correlations observed temperatures, especially summer autumn. Seasonal generally notable impacts autumn, sub-basins like Hotan Basin.

Language: Английский

Citations

0