Loading...
Please wait, while we are loading the content...
Complex Principal Component Analysis of Mass Balance Change on Qinghai-Tibet Plateau
| Content Provider | Semantic Scholar |
|---|---|
| Author | Zhan, Jingang Wang, Yong Yao, Yixin |
| Copyright Year | 2016 |
| Abstract | This paper analyzes the spatial characteristics of mass balance change on the Qinghai-Tibet Plateau and surrounding areas, using 153 monthly solutions of temporal gravity data from the Gravity Recovery and Climate Experiment(in this case GRACE) satellite. Spatial mode characteristics and phase information of mass balance change 10 are analyzed using complex principal component analysis(in this case CPCA). Information on time-frequency change of major components is analyzed using the wavelet amplitude-period spectrum. The results show that the mass balance change on the plateau is influenced by various atmospheric circulations and there are obvious systemic differences, namely, glacial fluctuation of the Himalayas area was mainly influenced by the weakening Indian monsoon, El Niño and East Asian monsoon. There were drastic changes of glacier mass gain and loss balance. Apart from the Indian 15 monsoon and El Niño affected on mass balance in inland areas of the plateau, the northern parts of the plateau was also affected by the westerlies and there was a positive mass balance, with mass gain exceeding loss. The Pamirs and the Karakoram Range areas are influenced not only by the Indian monsoon and westerlies but also by the climate change of El Niño and La Niña, and mass change shows a weak mass balanced. The major influence on the change of mass balance on the Qinghai-Tibet Plateau was the weakening Indian monsoon, which was responsible for 54.0% of that 20 change. Because El Niño is strengthening, it has recently become the second major factor affecting the change of mass balance, responsible for 16.3% of that change. The third major influence was the westerlies and of La Niña-related climate change, accounting for 5.6% of the mass balance change. |
| File Format | PDF HTM / HTML |
| DOI | 10.5194/tc-2016-259 |
| Alternate Webpage(s) | https://www.the-cryosphere-discuss.net/tc-2016-259/tc-2016-259.pdf |
| Alternate Webpage(s) | https://doi.org/10.5194/tc-2016-259 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
