Variations of Lake Ice Phenology on the Tibetan Plateau From 2001 to 2017 Based on MODIS Data

Cai, Yu and Ke, Chang-Qing and Li, Xingong and Zhang, Guoqing and Duan, Zheng and Lee, Hoonyol (2019) Variations of Lake Ice Phenology on the Tibetan Plateau From 2001 to 2017 Based on MODIS Data. Journal of Geophysical Research: Atmospheres, 124 (2). pp. 825-843. ISSN 0747-7309

[img]
Preview
PDF (Lake ice on the TP 20181022 without tracking)
Lake_ice_on_the_TP_20181022_without_tracking.pdf - Accepted Version
Available under License Creative Commons Attribution-NonCommercial.

Download (1MB)

Abstract

Lake ice is a robust indicator of climate change. The availability of information contained in Moderate Resolution Imaging Spectroradiometer daily snow products from 2000 to 2017 could be greatly improved after cloud removal by gap filling. Thresholds based on open water pixel numbers are used to extract the freezeup start and breakup end dates for 58 lakes on the Tibetan Plateau (TP); 18 lakes are also selected to extract the freezeup end and breakup start dates. The lake ice durations are further calculated based on freezeup and breakup dates. Lakes on the TP begin to freezeup in late October and all the lakes start the ice cover period in mid‐January of the following year. In late March, some lakes begin to break up, and all the lakes end the ice cover period in early July. Generally, the lakes in the northern Inner‐TP have earlier freezeup dates and later breakup dates (i.e., longer ice cover durations) than those in the southern Inner‐TP. Over 17 years, the mean ice cover duration of 58 lakes is 157.78 days, 18 (31%) lakes have a mean extending rate of 1.11 day/year, and 40 (69%) lakes have a mean shortening rate of 0.80 day/year. Geographical location and climate conditions determine the spatial heterogeneity of the lake ice phenology, especially the ones of breakup dates, while the physico‐chemical characteristics mainly affect the freezeup dates of the lake ice in this study. Ice cover duration is affected by both climatic and lake specific physico‐chemical factors, which can reflect the climatic and environmental change for lakes on the TP.

Item Type: Journal Article
Journal or Publication Title: Journal of Geophysical Research: Atmospheres
Additional Information: An edited version of this paper was published by AGU. Copyright 2019 American Geophysical Union. Cai, Y., Ke, C.‐Q., Li, X., Zhang, G., Duan, Z., & Lee, H. (2019). Variations of lake ice phenology on the Tibetan Plateau from 2001 to 2017 based on MODIS data. Journal of Geophysical Research: Atmospheres, 124, 825–843. https://doi.org/10.1029/2018JD028993 To view the published open abstract, go to http://dx.doi.org and enter the DOI.
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 131842
Deposited By: ep_importer_pure
Deposited On: 12 Mar 2019 14:50
Refereed?: Yes
Published?: Published
Last Modified: 26 Feb 2020 04:54
URI: https://eprints.lancs.ac.uk/id/eprint/131842

Actions (login required)

View Item View Item