TY - JOUR
T1 - Recent abnormal hydrologic behavior of Tibetan lakes observed by multi-mission altimeters
AU - Zhan, Pengfei
AU - Song, Chunqiao
AU - Wang, Jida
AU - Li, Wenkai
AU - Ke, Linghong
AU - Liu, Kai
AU - Chen, Tan
N1 - Funding Information:
Funding: This work was partly funded by the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA23100102); the Second Tibetan Plateau Scientific Expedition and Research (2019QZKK0202); the National Key Research and Development Program of China (Grant No. 2019YFA0607101, 2018YFD0900804, and 2018YFD1100101); the Thousand Young Talents Program in China (Grant No. Y7QR011001); and the National Natural Science Foundation of China (No. 41971403 and 41801321).
Funding Information:
This work was partly funded by the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA23100102); the Second Tibetan Plateau Scientific Expedition and Research (2019QZKK0202); the National Key Research and Development Program of China (Grant No. 2019YFA0607101, 2018YFD0900804, and 2018YFD1100101); the Thousand Young Talents Program in China (Grant No. Y7QR011001); and the National Natural Science Foundation of China (No. 41971403 and 41801321). Acknowledgments: We are also grateful to the Laboratoire d'Etudes en G?ophysique et Oc?anographie Spatiales (LEGOS), the Hydrological Time Series of Inland Waters (DAHITI), the NASA EOSDIS Physical Oceanography Distributed Active Archive Center (PO.DAAC), Centre National d'Etudes Spatiales (CNES), the China Meteorological Data Sharing Service System, and the European Centre for Medium-Range Weather Forecasts for providing satellite altimetry data and meteorological data for this study.
Publisher Copyright:
© 2020 by the authors.
PY - 2020/9/2
Y1 - 2020/9/2
N2 - Inland lakes in the Tibetan Plateau (TP) with closed catchments and minimal human disturbance are an important indicator of climate change. However, the examination of changes in the spatiotemporal patterns of Tibetan lakes, especially water level variations, is limited due to inadequate access to measurements. This obstacle has been improved by the development of satellite altimetry observations. The more recent studies revealed that the trend of central TP to grow decreased or reversed between 2010 and 2016. However, thus far, this trend has not been investigated to determine whether this pattern would last for the following years. This study aims to combine the traditional (launched before 2010, e.g., TOPEX/POSEIDON, ERS-1, ERS-2, Jason-1/-2, and Envisat) and recently advanced (launched after 2010, e.g., SARAL and Sentinel-3) altimetry observations to understand the Tibetan lake changes further in recent years. Therefore, we acquired information on the continuous lake level changes in Tibetan lakes using the lake level sequence integration method based on multisource altimetry satellites. The results revealed that water level changes in 22 examined lakes showed abrupt rises in 2016-2018, but the onsets and magnitudes of the rises varied among the lakes. During the study period, the water levels of the lakes (except Nam Co) revealed a drastic rising tendency with a mean rate of 0.74 m/a, which was remarkably higher than the average rate of water level rise over the period 2010-2015 (approximately 0.28 m/a). Specifically, the water level of the nine lakes in the Northern TP (NTP) displayed a significant rising trend, with an average rate of 0.82 m/a. In the Central TP (CTP), the lake level changes were generally divided into two categories. The water levels for the lakes in the Western CTP rose rapidly, while, in the Eastern CTP, the lake water levels rose slowly, with an average rising rate less than 0.40 m/a. The water levels for the lakes in the Northeastern TP (NETP) and Northwestern TP (NWTP) kept a stable rising tendency. According to the results of the climate analysis, the spatial differences of the lake level rise rates were primarily caused by the spatial and temporal changes of precipitation over the TP.
AB - Inland lakes in the Tibetan Plateau (TP) with closed catchments and minimal human disturbance are an important indicator of climate change. However, the examination of changes in the spatiotemporal patterns of Tibetan lakes, especially water level variations, is limited due to inadequate access to measurements. This obstacle has been improved by the development of satellite altimetry observations. The more recent studies revealed that the trend of central TP to grow decreased or reversed between 2010 and 2016. However, thus far, this trend has not been investigated to determine whether this pattern would last for the following years. This study aims to combine the traditional (launched before 2010, e.g., TOPEX/POSEIDON, ERS-1, ERS-2, Jason-1/-2, and Envisat) and recently advanced (launched after 2010, e.g., SARAL and Sentinel-3) altimetry observations to understand the Tibetan lake changes further in recent years. Therefore, we acquired information on the continuous lake level changes in Tibetan lakes using the lake level sequence integration method based on multisource altimetry satellites. The results revealed that water level changes in 22 examined lakes showed abrupt rises in 2016-2018, but the onsets and magnitudes of the rises varied among the lakes. During the study period, the water levels of the lakes (except Nam Co) revealed a drastic rising tendency with a mean rate of 0.74 m/a, which was remarkably higher than the average rate of water level rise over the period 2010-2015 (approximately 0.28 m/a). Specifically, the water level of the nine lakes in the Northern TP (NTP) displayed a significant rising trend, with an average rate of 0.82 m/a. In the Central TP (CTP), the lake level changes were generally divided into two categories. The water levels for the lakes in the Western CTP rose rapidly, while, in the Eastern CTP, the lake water levels rose slowly, with an average rising rate less than 0.40 m/a. The water levels for the lakes in the Northeastern TP (NETP) and Northwestern TP (NWTP) kept a stable rising tendency. According to the results of the climate analysis, the spatial differences of the lake level rise rates were primarily caused by the spatial and temporal changes of precipitation over the TP.
KW - Climate change
KW - Lake
KW - Precipitation
KW - Satellite altimetry
KW - Tibetan Plateau
KW - Water level
UR - http://www.scopus.com/inward/record.url?scp=85092100717&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85092100717&partnerID=8YFLogxK
U2 - 10.3390/RS12182986
DO - 10.3390/RS12182986
M3 - Article
AN - SCOPUS:85092100717
SN - 2072-4292
VL - 12
JO - Remote Sensing
JF - Remote Sensing
IS - 18
M1 - 2986
ER -