Analysis and Research of Precipitation in Qinghai-Tibet Plateau Based on WAM-2layers Calculation Model

Jiaxiang Deng, Quan Quan, Guanyu Zhou

2023

Abstract

Moisture, as a key component of the atmospheric branch of global water cycle, are an important basis for precipitation formation. The warming rate of the Qinghai-Tibet Plateau in recent 40 years has been two times of the global concurrent warming rate, and the water cycle and water resource allocation in the region also vary with the temperature rise. Therefore, to study influences of changes in the water cycle structure in the permafrost region on the regional precipitation structure, the Water Accounting Model-2layers (WAM2layers) was utilized to track moisture contributing to precipitation in the flood season (July and August) in the Qinghai-Tibet Plateau region from 2014 to 2016. By doing so, the research attempts to determine the main moisture sources and moisture cycling efficiency in the Qinghai-Tibet Plateau region. Main conclusions are summarized as follows: 1) due to the high elevation of the Qinghai-Tibet Plateau, precipitation in the region mainly concentrates in the south and the cumulative precipitation in the north is obviously lower than that in the south. Except for 2016, the cumulative precipitation in August was always higher than that in July in other years. 2) Due to the fact that the WAM-2layers model only analyzes precipitation caused by evaporation in the Qinghai-Tibet Plateau region, the proportion of internal water vapor contribution is only 25.5%, but the contribution of internal cycle water vapor is still the largest in the region. 3) Due to characteristic of WAM-2layers tracing evaporation source of regional precipitation, it is better at calculating regional precipitation recycling compared to other models. The precipitation formed by evaporation in the Qinghai-Tibet Plateau region accounts for 57.1% of the total precipitation, and the precipitation recycling ratio of the plateau itself is 25.5%.

Paper Citation

in Harvard Style

Deng J., Quan Q. and Zhou G. (2023). Analysis and Research of Precipitation in Qinghai-Tibet Plateau Based on WAM-2layers Calculation Model. In Proceedings of the 2nd International Seminar on Artificial Intelligence, Networking and Information Technology - Volume 1: ANIT; ISBN 978-989-758-677-4, SciTePress, pages 148-155. DOI: 10.5220/0012276200003807

in Bibtex Style

@conference{anit23,
author={Jiaxiang Deng and Quan Quan and Guanyu Zhou},
title={Analysis and Research of Precipitation in Qinghai-Tibet Plateau Based on WAM-2layers Calculation Model},
booktitle={Proceedings of the 2nd International Seminar on Artificial Intelligence, Networking and Information Technology - Volume 1: ANIT},
year={2023},
pages={148-155},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0012276200003807},
isbn={978-989-758-677-4},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 2nd International Seminar on Artificial Intelligence, Networking and Information Technology - Volume 1: ANIT
TI - Analysis and Research of Precipitation in Qinghai-Tibet Plateau Based on WAM-2layers Calculation Model
SN - 978-989-758-677-4
AU - Deng J.
AU - Quan Q.
AU - Zhou G.
PY - 2023
SP - 148
EP - 155
DO - 10.5220/0012276200003807
PB - SciTePress