Lake ice phenology of Nam Co, Central Tibetan Plateau, China, derived from multiple MODIS data products
| Autor: | Changgui Lin, Peng Gou, Tao Che, Baohong Ding, Qiang Feng, Qinghua Ye, Jibiao Zong |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
geography
Plateau geography.geographical_feature_category 010504 meteorology & atmospheric sciences Ecology Phenology 0208 environmental biotechnology Water storage Global warming Northern Hemisphere Climate change 02 engineering and technology Aquatic Science 01 natural sciences Wind speed 020801 environmental engineering Climatology Environmental science Moderate-resolution imaging spectroradiometer Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences |
| Zdroj: | Journal of Great Lakes Research. 43:989-998 |
| ISSN: | 0380-1330 |
| DOI: | 10.1016/j.jglr.2017.08.011 |
| Popis: | Lake ice phenology, including freeze-up and break-up dates, is a sensitive indicator of climate change. However, uniformly created lake ice phenology records are still required on the Tibetan Plateau (TP) for a more accurate analysis of climate change. In this study, we present a new automated method to extend the interpretation of existing in-situ lake ice records, using multiple MODIS data products. Our results showed strong agreement with the in-situ data at Nam Co (Co means lake in Tibetan language) on the central TP. The multiple MODIS based method is therefore well-suited to the detection of lake ice phenology. The result showed that in 2000–2015, the mean lake ice duration (ID) in the middle of Nam Co was ~ 87 d; the freeze-up start (FUS) date delayed 0.58 d/yr and the break-up start (BUS) date delayed 0.09 d/yr, giving a total decrease in ID at the rate of 0.49 d/yr. We suggest the delayed freeze-up dates became more marked in response to climate warming. Changes in lake ice coverage in Nam Co are affected by a number of local and regional climatic factors, such as air temperature and wind speed. |
| Databáze: | OpenAIRE |
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