Comment on egusphere-2023-3043 DOI Creative Commons

Zehua Chang,

Hongkai Gao,

Leilei Yong

et al.

Published: Dec. 27, 2023

Abstract. Climate warming exacerbates the degradation of mountain cryosphere, including glacier retreat, reduction in snow cover area, and permafrost degradation. These changes dramatically alter local downstream hydrological regime, posing significant threats to basin-scale water resource management sustainable development. However, there is still a lack systematic research that evaluates variation cryospheric elements mountainous catchments their impacts on future hydrology resources. In this study, we developed an integrated cryospheric-hydrologic model, referred as FLEX-Cryo model. This model comprehensively considers glaciers, cover, frozen soil, dynamic processes Hulu catchment located Upper Heihe river China. We utilized state-of-the-art climate change projection data from sixth phase Coupled Model Intercomparison Project (CMIP6) simulate cryosphere hydrology. Our findings showed two glaciers will completely melt out around years 2045–2051. By end 21st century, annual maximum equivalent projected decrease by 41.4 % 46.0 %, while duration be reduced approximately 45 70 days. The freeze onset seasonal soil expected delayed 10 22 days, thaw likely advance 19 32 Moreover, depth 5.2 10.9 cm per decade, active layer increase 8.2 15.5 decade. Regarding hydrology, runoff exhibits decreasing trend until complete melt-out resulting total 15.6 18.1 %. Subsequently, shows increasing trend, primarily due precipitation. Permafrost causes low early thawing season decrease, discontinuous baseflow recession gradually transitions into linear recessions, leading baseflow. results highlight future. enhance our understanding cold-region have potential assist addressing challenges posed change.

Language: Английский

Permafrost temperature dynamics and its climate relations in various Tibetan alpine grasslands DOI Creative Commons
Siru Gao, Guanli Jiang, Zhongqiong Zhang

et al.

CATENA, Journal Year: 2024, Volume and Issue: 241, P. 108065 - 108065

Published: April 30, 2024

Language: Английский

Citations

3
Agricultural Irrigation Water Requirement and Its Response to Climatic Factors Based on Remote Sensing and Single Crop Coefficient Method DOI
Jiaxin Sun, Liwen Chen, Peng Qi

et al.

Water Resources Management, Journal Year: 2024, Volume and Issue: unknown

Published: June 10, 2024

Language: Английский

Citations

3
Effects of coupled biochar and snow cover on soil carbon components and CO2 emissions in seasonally frozen soil areas under climate change conditions DOI
Xuechen Yang,

Renjie Hou,

Qiang Fu

et al.

CATENA, Journal Year: 2024, Volume and Issue: 243, P. 108203 - 108203

Published: June 21, 2024

Language: Английский

Citations

3
Parameterization model of soil thermal conductivity and its application in the permafrost region of the Qinghai-Tibet Plateau DOI

Yizhen Du,

Jie Ni, Li Ren

et al.

Theoretical and Applied Climatology, Journal Year: 2024, Volume and Issue: 155(6), P. 4371 - 4390

Published: Feb. 23, 2024

Language: Английский

Citations

2
Projected future changes in the cryosphere and hydrology of a mountainous catchment in the upper Heihe River, China DOI Creative Commons

Zehua Chang,

Hongkai Gao,

Leilei Yong

et al.

Hydrology and earth system sciences, Journal Year: 2024, Volume and Issue: 28(16), P. 3897 - 3917

Published: Aug. 26, 2024

Abstract. Climate warming exacerbates the degradation of mountain cryosphere, including glacier retreat, permafrost degradation, and snow cover reduction. These changes dramatically alter local downstream hydrological regime, posing significant threats to basin-scale water resource management sustainable development. However, this issue is still not adequately addressed, particularly in mountainous catchments. We developed an integrated cryospheric–hydrologic model, FLEX-Cryo comprehensively consider glaciers, cover, frozen soil their dynamic impacts on processes. Taking Hulu catchment located upper Heihe River China as a case study, we utilized state-of-the-art climate change projection data under two scenarios (SSP2-4.5 SSP5-8.5) from sixth phase Coupled Model Intercomparison Project (CMIP6) simulate future cryosphere hydrology. Our findings showed that medium-emission scenario (SSP2-4.5) high-emission (SSP5-8.5), by end 21st century, will completely melt out around years 2051 2045, respectively. The annual maximum equivalent projected decrease 41.4 % 46.0 %, while duration be reduced approximately 45 70 d. freeze onset seasonally expected delayed 10 22 d, thaw likely advance 19 32 Moreover, depth 5.2 10.9 cm per decade, active layer increase 8.2 15.5 decade. Regarding hydrology, total runoff exhibits decreasing trend, tipping point occurs between 2019 2021. Permafrost reduce low early thawing season; discontinuous baseflow recession gradually transitions into linear recessions, increases. results highlight hydrology future. enhance our understanding cold-region processes have potential assist addressing challenges posed change.

Language: Английский

Citations

2
Flooding lowers the emissions of CO2 and CH4 during the freeze-thaw process in a lacustrine wetland DOI
Yongen Min, Qian Gao, Yong Wang

et al.

CATENA, Journal Year: 2023, Volume and Issue: 227, P. 107132 - 107132

Published: April 6, 2023

Language: Английский

Citations

6
Characteristic Analysis of the Spatio-Temporal Distribution of Key Variables of the Soil Freeze–Thaw Processes over Heilongjiang Province, China DOI Open Access
Chengjie Song,

Changlei Dai,

Chuang Wang

et al.

Water, Journal Year: 2022, Volume and Issue: 14(16), P. 2573 - 2573

Published: Aug. 20, 2022

The soil freeze–thaw phenomenon is one of the most outstanding characteristics in Heilongjiang Province. Quantitative analysis changes key variables processes great scientific importance for understanding climate change, as well ecological and hydrological processes. Based on daily surface temperature air data Province past 50 years, spatial–temporal distribution their correlations with latitude process were analyzed using linear regression, Mann–Kendall test, local thin disk smooth spline function interpolation method, correlation analysis; additionally, during are discussed under different vegetation types. results show that there a trend delayed freezing early melting from north to south. From 1971 2019 a, start date (FSD) was at rate 1.66 d/10 end (FED) advanced 3.17 days (FD) shortened 4.79 a; each 1 °C increase temperature, FSD by about 1.6 d, FED 3 FD 4.6 d; 1° latitude, 2.6 2.8 5.6 d. spatial variation same cover closely related altitude, where lower more obvious trend; among them, interannual meadow obvious, which varied 9.65, 16.86, 26.51 respectively. In addition, trends ground types generally consistent, longest period unstable shortest stable freeze coniferous forests, compared meadows. study important our Province, evolution high-latitude permafrost; they also promote further exploration impact agricultural production change.

Language: Английский

Citations

6
Laboratory study on heat, moisture, and deformation behaviors of seasonally frozen soil under the influence of solar radiation and underlying surface colors DOI

Haoyuan Jiang,

Mingyi Zhang, Zhengzhong Wang

et al.

Cold Regions Science and Technology, Journal Year: 2023, Volume and Issue: 216, P. 104004 - 104004

Published: Sept. 9, 2023

Language: Английский

Citations

3
Attribution Analysis of Runoff Variation in the Second Songhua River Based on the Non-Steady Budyko Framework DOI Open Access
Zan Li, Yao Wu, Ji Li

et al.

Water, Journal Year: 2023, Volume and Issue: 15(3), P. 451 - 451

Published: Jan. 23, 2023

Understanding the role of climate change and catchment characteristics in hydrological activity is important for efficient use water resources. In this study, a Budyko framework suitable non-steady conditions was used to assess impacts on long-term changes annual seasonal runoff Second Songhua River (SSR) basin during last 30 years. Based analysis hydro-meteorological series SSR, SSR showed non-significant increasing trend. The elements changed abruptly 2009, study period divided into baseline (1989–2009) disturbed (2010–2018). Runoff increased compared period, with significant increase spring upstream area summer downstream area. attribution results indicated that mainly affected by climatic factors, 66.8–99.6% yearly were caused change. Catchment had little effect but significantly runoff. affecting withdrawal, snowfall, degradation permafrost, reservoir operation. This provides basis further understanding intra-annual variability other similar rivers.

Language: Английский

Citations

2
Reply on RC1 DOI Creative Commons
Hongkai Gao

Published: March 8, 2024

Abstract. Climate warming exacerbates the degradation of mountain cryosphere, including glacier retreat, reduction in snow cover area, and permafrost degradation. These changes dramatically alter local downstream hydrological regime, posing significant threats to basin-scale water resource management sustainable development. However, there is still a lack systematic research that evaluates variation cryospheric elements mountainous catchments their impacts on future hydrology resources. In this study, we developed an integrated cryospheric-hydrologic model, referred as FLEX-Cryo model. This model comprehensively considers glaciers, cover, frozen soil, dynamic processes Hulu catchment located Upper Heihe river China. We utilized state-of-the-art climate change projection data from sixth phase Coupled Model Intercomparison Project (CMIP6) simulate cryosphere hydrology. Our findings showed two glaciers will completely melt out around years 2045–2051. By end 21st century, annual maximum equivalent projected decrease by 41.4 % 46.0 %, while duration be reduced approximately 45 70 days. The freeze onset seasonal soil expected delayed 10 22 days, thaw likely advance 19 32 Moreover, depth 5.2 10.9 cm per decade, active layer increase 8.2 15.5 decade. Regarding hydrology, runoff exhibits decreasing trend until complete melt-out resulting total 15.6 18.1 %. Subsequently, shows increasing trend, primarily due precipitation. Permafrost causes low early thawing season decrease, discontinuous baseflow recession gradually transitions into linear recessions, leading baseflow. results highlight future. enhance our understanding cold-region have potential assist addressing challenges posed change.

Language: Английский

Citations

0