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The vertical influence of temperature and precipitation on snow cover variability in the Central Tianshan Mountains, Northwest China

Wu, Senyao; Zhang, Xueliang; Du, Jinkang; Zhou, Xiaobing; Tuo, Ye; Li, Runjie and Duan, Zheng LU (2019) In Hydrological Processes 33(12). p.1686-1697
Abstract

Seasonal snow cover in mountainous regions will affect local climate and hydrology. In this study, we assessed the role of altitude in determining the relative importance of temperature and precipitation in snow cover variability in the Central Tianshan Mountains. The results show that: (a) in the study area, temperature has a greater influence on snow cover than precipitation during most of the time period studied and in most altitudes. (b) In the high elevation area, there is a threshold altitude of 3,900 ± 400 m, below which temperature is negatively correlated whereas precipitation is positively correlated to snow cover, and above which the situation is the opposite. Besides, this threshold altitude decreases from snow accumulated... (More)

Seasonal snow cover in mountainous regions will affect local climate and hydrology. In this study, we assessed the role of altitude in determining the relative importance of temperature and precipitation in snow cover variability in the Central Tianshan Mountains. The results show that: (a) in the study area, temperature has a greater influence on snow cover than precipitation during most of the time period studied and in most altitudes. (b) In the high elevation area, there is a threshold altitude of 3,900 ± 400 m, below which temperature is negatively correlated whereas precipitation is positively correlated to snow cover, and above which the situation is the opposite. Besides, this threshold altitude decreases from snow accumulated period to snow stable period and then increases from snowmelt period to snow-free period. (c) Below 2,000 m, there is another threshold altitude of 1,400 ± 100 m during the snow stable period, below (above) which precipitation (temperature) is the main driver of snow cover.

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author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
high mountains, precipitation, seasonal snow, snow cover variability, temperature, threshold altitude
in
Hydrological Processes
volume
33
issue
12
pages
12 pages
publisher
Wiley Online Library
external identifiers
  • scopus:85063803041
ISSN
0885-6087
DOI
10.1002/hyp.13431
language
English
LU publication?
no
id
9ff310da-71c1-418b-b19c-6818e173f27d
date added to LUP
2019-11-07 20:22:41
date last changed
2019-11-08 10:37:51
@article{9ff310da-71c1-418b-b19c-6818e173f27d,
  abstract     = {<p>Seasonal snow cover in mountainous regions will affect local climate and hydrology. In this study, we assessed the role of altitude in determining the relative importance of temperature and precipitation in snow cover variability in the Central Tianshan Mountains. The results show that: (a) in the study area, temperature has a greater influence on snow cover than precipitation during most of the time period studied and in most altitudes. (b) In the high elevation area, there is a threshold altitude of 3,900 ± 400 m, below which temperature is negatively correlated whereas precipitation is positively correlated to snow cover, and above which the situation is the opposite. Besides, this threshold altitude decreases from snow accumulated period to snow stable period and then increases from snowmelt period to snow-free period. (c) Below 2,000 m, there is another threshold altitude of 1,400 ± 100 m during the snow stable period, below (above) which precipitation (temperature) is the main driver of snow cover.</p>},
  author       = {Wu, Senyao and Zhang, Xueliang and Du, Jinkang and Zhou, Xiaobing and Tuo, Ye and Li, Runjie and Duan, Zheng},
  issn         = {0885-6087},
  keyword      = {high mountains,precipitation,seasonal snow,snow cover variability,temperature,threshold altitude},
  language     = {eng},
  month        = {06},
  number       = {12},
  pages        = {1686--1697},
  publisher    = {Wiley Online Library},
  series       = {Hydrological Processes},
  title        = {The vertical influence of temperature and precipitation on snow cover variability in the Central Tianshan Mountains, Northwest China},
  url          = {http://dx.doi.org/10.1002/hyp.13431},
  volume       = {33},
  year         = {2019},
}