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Spatiotemporal characteristics of black carbon over the Tibetan Plateau and validation of MERRA-2 and TAP datasets
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Jing LAI1, Min-sheng XIE1, Ya-qiang WANG2, Shi-chang KANG3, 4, Peng-fei CHEN3, Xin WAN5, Zhi-yuan CONG1, *
China Environmental Science | 2026, 46(3) : 1238 - 1246
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China Environmental Science | 2026, 46(3): 1238-1246
• Air Pollution Control •
Spatiotemporal characteristics of black carbon over the Tibetan Plateau and validation of MERRA-2 and TAP datasets
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Jing LAI1, Min-sheng XIE1, Ya-qiang WANG2, Shi-chang KANG3, 4, Peng-fei CHEN3, Xin WAN5, Zhi-yuan CONG1, *
Affiliations
  • 1.Key Laboratory of Biodiversity and Environment on the Qinghai-Tibetan Plateau, Ministry of Education, School of Ecology and Environment, Xizang University, Lhasa 850000, China
  • 2.State Key Laboratory of Severe Weather Meteorological Science and Technology, Chinese Academy of Meteorological Sciences, Beijing 100081, China
  • 3.Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
  • 4.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610213, China
  • 5.State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources, Institute of Tibetan Plateau Research Chinese Academy of Sciences, Beijing 100101, China
Published: 2026-03-20
Outline
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To evaluate the applicability of the MERRA-2 and TAP datasets over the Plateau, ground-based observations from the Qomolangma, Nam Co, and Waliguan stations were utilized to validate the accuracy of atmospheric black carbon (BC) in both datasets. Results showed that Nam Co had the lowest annual mean BC concentration (0.04μg/m3), while Qomolangma (0.26μg/m3) and Waliguan (0.28μg/m3) recorded higher levels. All stations exhibited a clear seasonal cycle, with higher concentrations in winter and spring and lower values in summer. MERRA-2 effectively reproduced the seasonal and temporal variations of BC, whereas TAP displayed a systematic overestimation across the Plateau, with annual deviations reaching up to four times in some years, indicating lower accuracy. During the March 2021 transboundary BC transport event from South Asia, MERRA-2 showed good capability in capturing the process, providing direct scientific evidence for cross-border pollutant transmission to the Plateau.

black carbon  /  Tibetan Plateau  /  MERRA-2  /  TAP  /  ground validation
赖静, 谢民生, 王亚强, 康世昌, 陈鹏飞, 万欣, 丛志远. 青藏高原大气黑碳时空特征及MERRA-2和TAP数据集验证. 中国环境科学, 2026 , 46 (3) : 1238 -1246 .
Jing LAI, Min-sheng XIE, Ya-qiang WANG, Shi-chang KANG, Peng-fei CHEN, Xin WAN, Zhi-yuan CONG. Spatiotemporal characteristics of black carbon over the Tibetan Plateau and validation of MERRA-2 and TAP datasets[J]. China Environmental Science, 2026 , 46 (3) : 1238 -1246 .
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Year 2026 volume 46 Issue 3
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Article Info
  • Receive Date：2025-08-11
  • Online Date：2026-10-08
  • Published：2026-03-20
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History
  • Received：2025-08-11
Funding
Affiliations
    1.Key Laboratory of Biodiversity and Environment on the Qinghai-Tibetan Plateau, Ministry of Education, School of Ecology and Environment, Xizang University, Lhasa 850000, China
    2.State Key Laboratory of Severe Weather Meteorological Science and Technology, Chinese Academy of Meteorological Sciences, Beijing 100081, China
    3.Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
    4.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610213, China
    5.State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources, Institute of Tibetan Plateau Research Chinese Academy of Sciences, Beijing 100101, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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