Dust Event Variations Between China's Different Climate Zones DOI
Huawei Pi, John T. Abatzoglou, Nicholas P. Webb

et al.

Journal of Geophysical Research Atmospheres, Journal Year: 2025, Volume and Issue: 130(11)

Published: May 31, 2025

Abstract Dust weather may occur and be frequent in some nondry climate zones due to extreme natural climatic or disturbance events human activities. In this study, the spatiotemporal characteristics of dust at 1941 meteorological stations China, encompassing 13 Köppen‐Geiger zones, were investigated. Floating frequency (FDF), blowing (BDF), storm frequency, related data analyzed assess activity from 1960 2020. decreased significantly 2020, BDF had greatest rate (−0.13 d y −1 ), while FDF mean (4.349 ). The (FDE) was two orders magnitude greater cold desert when compared with other although annual wind speed not always greater. FDE ranged 0.005 Aw (tropical savanna climate) 12.34 ET (polar tundra). As a zone, more than dry zones. generally most active March, April, May. However, month could as early January (e.g., 1963) late June 1967). Results show that associated parameters every zone impact activities overcultivation) on non‐negligible. Nonarid affect integrated region patterns carbon cycle modeling.

Language: Английский

Contrasting Sulfur Isotope Signatures in Two Arid Basins Separated by the Qilian Mountains DOI
Yuxin Hao,

S. L. Niu,

Xiying Zhang

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: April 2, 2025

Abstract Global climate variations have intensified the transformation of salt lakes and saline-alkali playas in arid regions into major sources dust storms, actively influencing atmospheric circulation dynamics. This study focuses on two geographically close but environmentally distinct regions, Qaidam Basin Alxa Plateau, situated opposite sides Qilian Mountains. Surface salts were collected from both areas analyzed for ion composition sulfur isotope characteristics. Results reveal high concentrations Na⁺ Cl⁻ with Mg²⁺ SO₄²⁻ also present, reflecting similarities ionic composition. The δ³⁴S values differ distribution between regions: shows higher more clustered (+ 9.11‰ to + 20.23‰), indicating a relatively closed system, while Plateau includes lower occasionally negative (− 2.30‰ 11.43‰), variable inputs open-system conditions. examines sulfur-to-chloride ratios, which vary significantly across sites complex environmental interactions diverse sources. In Basin, ratios are stable, suggesting consistent cycling within environment. Additional analyses sulfate-to-sodium sulfate-to-magnesium further emphasize processes each region, minimal impact these ions δ34S values. provides insights contrasting isotopic that shape material evolutionary Plateau.

Language: Английский

Citations

0
Contrasting sulfur isotope signatures in two arid basins separated by the Qilian mountains DOI Creative Commons
Yuxin Hao,

S. L. Niu,

Haixia Zhu

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: May 18, 2025

Abstract Global climate variations have intensified the transformation of salt lakes and saline-alkali playas in arid regions into major sources dust storms, actively influencing atmospheric circulation dynamics. This study focuses on two geographically close but environmentally distinct regions, Qaidam Basin Alxa Plateau, situated opposite sides Qilian Mountains. Surface salts were collected from both areas analyzed for ion composition sulfur isotope characteristics. Results reveal high concentrations Na + Cl − with Mg 2+ SO 4 2− also present, reflecting similarities ionic composition. The δ 34 S values differ distribution between regions: shows higher more clustered (+ 9.11‰ to 20.23‰), indicating a relatively closed system, while Plateau includes lower occasionally negative (− 2.30‰ 11.43‰), variable inputs open-system conditions. examines sulfur-to-chloride ratios, which vary significantly across sites complex environmental interactions diverse sources. In Basin, ratios are stable, suggesting consistent cycling within environment. Additional analyses sulfate-to-sodium sulfate-to-magnesium further emphasize processes each region, minimal impact these ions values. provides insights contrasting isotopic that shape material evolutionary Plateau.

Language: Английский

Citations

0
Dust Event Variations Between China's Different Climate Zones DOI
Huawei Pi, John T. Abatzoglou, Nicholas P. Webb

et al.

Journal of Geophysical Research Atmospheres, Journal Year: 2025, Volume and Issue: 130(11)

Published: May 31, 2025

Abstract Dust weather may occur and be frequent in some nondry climate zones due to extreme natural climatic or disturbance events human activities. In this study, the spatiotemporal characteristics of dust at 1941 meteorological stations China, encompassing 13 Köppen‐Geiger zones, were investigated. Floating frequency (FDF), blowing (BDF), storm frequency, related data analyzed assess activity from 1960 2020. decreased significantly 2020, BDF had greatest rate (−0.13 d y −1 ), while FDF mean (4.349 ). The (FDE) was two orders magnitude greater cold desert when compared with other although annual wind speed not always greater. FDE ranged 0.005 Aw (tropical savanna climate) 12.34 ET (polar tundra). As a zone, more than dry zones. generally most active March, April, May. However, month could as early January (e.g., 1963) late June 1967). Results show that associated parameters every zone impact activities overcultivation) on non‐negligible. Nonarid affect integrated region patterns carbon cycle modeling.

Language: Английский

Citations

0