Winter westerly index and central Asia precipitation time series over the last 150 ka
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DOI
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Key words
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Paleoclimate analog, transient experiments, the last 150 ka, the winter westerly index, precipitation, stalagmite
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Related data
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Using the Community Climate System Model version 3 (CCSM3) from NCAR (National Center for Atmospheric Research), a long-term transient experiment were performed for the past 150 ka with orbital acceleration technique. This dataset collects annual total precipitation (CAPre-annual), winter total precipitation (CAPre-DJF),winter westly index (WWI), and December insolation at 45 degrees north of modeling output in arid central Asia (50-70°E, 35-50°N) over the past 150 ka. And the winter westerly index (WWI) is defined as the global average of the sea level pressure differences between 35°N and 55°N, according to the zonal index proposed by Rossby et al. (1939). In the following, “high index” and “low index” are used to represent the strong and weak midlatitude westerlies, respectively. The simulation results reveal that both annual precipitation and winter precipitation in central Asia exhibit cyclic patterns of 20 ka intervals similar to that of east Asia, as similar precipitation characteristics can also be observed from reconstructed oxygen isotope time series CA-D18O of the Soreq and Peqiin Caves stalagmite records in central Asia.
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Data description
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a. Description of Intellectual Property Rights When using a dataset, please refer to the following documents in the article: Li, X., X. Liu, L. Qiu, Z. An, and Z.-Y. Yin (2013), Transient simulation of orbital-scale precipitation variation in monsoonal East Asia and arid central Asia during the last 150 ka, J. Geophys. Res. Atmos., 118, doi:10.1002/jgrd.50611.
b. The data labels refer to the following specifications： Data sources refer to the following specifications： Chinese Expression： 数据来源于国家科技资源共享服务平台-国家地球系统科学数据中心(http://www.geodata.cn)-东亚古环境科学数据库(http://paleodata.ieecas.cn/index.aspx)； English Expression： East Asian Paleoenvironmental Science Database (http://paleodata.ieecas.cn/index.aspx)，National Earth System Science Data Center, National Science & Technology Infrastructure of China (http://www.geodata.cn). Acknowledgments refer to the following specifications: Acknowledgments in Chinese： 感谢国家科技资源共享服务平台-国家地球系统科学数据中心(http://www.geodata.cn)-东亚古环境科学数据库(http://paleodata.ieecas.cn/index.aspx)提供数据支撑。 Acknowledgments in English： Acknowledgement for the data support from “East Asian Paleoenvironmental Science Database (http://paleodata.ieecas.cn/index.aspx)，National Earth System Science Data Center, National Science & Technology Infrastructure of China. (http://www.geodata.cn)”.
c. Contacts Name: Data processing group Company: Institute of Earth Environment, Chinese Academy of Sciences Tel: 029-62336213 Email: eapsd@ieecas.cn
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Dataset format
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excel
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Data type
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Climate and environment modeling/Climate and environment modeling/Climate and environment modeling
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Data sources
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IEECAS
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Enclosure
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[download]
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Related pictures
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Name：王晓瑜 |
E-mail：wangxy@ieecas.cn |
| Company：地球环境研究所 |
Telephone：18826234513 |