Drought index from tree-rings in Kongton Mountains, China
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2012
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| _version_ | 1867169038986117120 |
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| author | Fang, Keyan Gou, Xiaohua Chen, Fahu Liu, Changzhi Davi, Nicole Li, Jinbao Zhao, Zhiqian Li, Yingjun |
| author_facet | Fang, Keyan Gou, Xiaohua Chen, Fahu Liu, Changzhi Davi, Nicole Li, Jinbao Zhao, Zhiqian Li, Yingjun |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The Kongtong Mountain area is a marginal area of the Asian summer monsoon and is sensitive to monsoon dynamics. The sensitivity highlights the need to establishing long-term climate records there and evaluating links with the Asian monsoon. Using "signal-free" methods, we developed a tree-ring chronology based 52 ring-width series from 23 Pinus tabulaeformis and Pinus armandidi trees in the Kongtong Mountain, northern China. Tree growth is highly correlated (0.844) with the Palmer Drought Severity Index (PDSI) from May to July, demonstrating the strength of PDSI in modeling drought conditions in this region. We therefore developed a robust May-July PDSI reconstruction spanning 1615-2009, which explained 71.2% of the instrumental variance for the period 1951-2005. Extremely dry epochs are found in periods of 1723-1727 and 1928-1932, and significant wet conditions are seen from 1696-1700, 1753-1757 and 1963-1969. These persistent dry and wet epochs were also found in northeastern Mongolia, suggesting similar drought regimes between these two regions. The dryness that occurred in the 1920s-1930s was the most severe and was concurrent with a warming period. This warming/drying relationship of the 1920s-1930s may be an analog to the current drying trend in northern China. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_770741 |
| institution | PANGAEA |
| language | en |
| publishDate | 2012 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Drought index from tree-rings in Kongton Mountains, China Fang, Keyan Gou, Xiaohua Chen, Fahu Liu, Changzhi Davi, Nicole Li, Jinbao Zhao, Zhiqian Li, Yingjun Age; AGE; Dendrochronological crossdating; Kongtong; Kongtong Mountains, Gansu Province, Peoples Republic of China; Palmer Drought Severity Index; TREE; Tree ring sampling The Kongtong Mountain area is a marginal area of the Asian summer monsoon and is sensitive to monsoon dynamics. The sensitivity highlights the need to establishing long-term climate records there and evaluating links with the Asian monsoon. Using "signal-free" methods, we developed a tree-ring chronology based 52 ring-width series from 23 Pinus tabulaeformis and Pinus armandidi trees in the Kongtong Mountain, northern China. Tree growth is highly correlated (0.844) with the Palmer Drought Severity Index (PDSI) from May to July, demonstrating the strength of PDSI in modeling drought conditions in this region. We therefore developed a robust May-July PDSI reconstruction spanning 1615-2009, which explained 71.2% of the instrumental variance for the period 1951-2005. Extremely dry epochs are found in periods of 1723-1727 and 1928-1932, and significant wet conditions are seen from 1696-1700, 1753-1757 and 1963-1969. These persistent dry and wet epochs were also found in northeastern Mongolia, suggesting similar drought regimes between these two regions. The dryness that occurred in the 1920s-1930s was the most severe and was concurrent with a warming period. This warming/drying relationship of the 1920s-1930s may be an analog to the current drying trend in northern China. |
| title | Drought index from tree-rings in Kongton Mountains, China |
| topic | Age; AGE; Dendrochronological crossdating; Kongtong; Kongtong Mountains, Gansu Province, Peoples Republic of China; Palmer Drought Severity Index; TREE; Tree ring sampling |
| url | https://doi.org/10.1594/PANGAEA.770741 |