Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.6218 |
Radiation and energy balance dynamics over a rapidly receding glacier in the central Himalaya | |
Singh, Nilendu1; Singhal, Mohit1; Chhikara, Sudershan2; Karakoti, Indira1; Chauhan, Pankaj3; Dobhal, Dwarika P.3 | |
2019-07-16 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | India |
英文摘要 | Driven by the strength in local land-atmosphere coupling, inter-annual variability of larger-scale atmospheric circulations primarily determines a glacier's response to warming in high Asia. In this study, micrometeorological measurements in conjunction with regional reanalysis data set were analysed to examine seasonal land-atmosphere coupling strength at a typical central Himalayan (CH) glacier where the influence of Indian summer monsoon (ISM) predominates relative to winter-westerlies. Energy-water (E-W) exchange and coupling behaviour were studied for the Pindari glacier based on sub-hourly measurements of radiative-convective flux, state parameters, and sub-surface thermal profiles using cross-correlations between various E-W balance components. Coupling was positive in summer and winter accumulation seasons. However, it remained strongest during ISM. Coupling reversed during seasonal transition phases concurrent with distinct seasonality in E-W components. Lead-lag relation between some variables showed strong association at diurnal-scale (VPD-Rn; VPD-LE; Rn-G), whereas some persisted beyond months (Rn-LE; Bowen ratio-precipitation; surface-air temperature). Weak association of variation of latent heat flux (LE) and rainfall was found during ISM at local scale than at regional scale, but with a lag, which was more prominent at regional scale. These observations indicate a seasonally variable coupling between E-W balance components through response-feedback mechanisms. Cross-correlations of daily mean values of energy fluxes and meteorological variables reveal that Rn and air temperature are the prime drivers of energy balance. Net radiative energy (Rn) dominates energy exchanges at the glacier-atmosphere interface (governed primarily by the variation in net shortwave radiation), contributed on average 62% of the melt energy. However, sub-surface heat flux along with the turbulent fluxes was the energy sinks of 24 and 15%, respectively. This study would help understand and parameterize E-W exchange pathways for ISM dominated CH glaciers in coupled glacier-climate models. |
英文关键词 | central Himalaya energy-water exchange glacier-atmosphere interaction hydrometeorology melt energy summer-accumulation-type glacier surface fluxes |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000478313700001 |
WOS关键词 | MASS-BALANCE ; SURFACE-ENERGY ; MIDLATITUDE WESTERLIES ; SUMMER-ACCUMULATION ; CLIMATE ; MONSOON ; REGION ; FLUXES ; VARIABILITY ; GLACIATION |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/185107 |
专题 | 气候变化 |
作者单位 | 1.Wadia Inst Himalayan Geol, Ctr Glaciol, Dehra Dun 248001, Uttar Pradesh, India; 2.Kurukshetra Univ, Kurukshetra, Haryana, India; 3.Wadia Inst Himalayan Geol, Dehra Dun, Uttar Pradesh, India |
推荐引用方式 GB/T 7714 | Singh, Nilendu,Singhal, Mohit,Chhikara, Sudershan,et al. Radiation and energy balance dynamics over a rapidly receding glacier in the central Himalaya[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2019. |
APA | Singh, Nilendu,Singhal, Mohit,Chhikara, Sudershan,Karakoti, Indira,Chauhan, Pankaj,&Dobhal, Dwarika P..(2019).Radiation and energy balance dynamics over a rapidly receding glacier in the central Himalaya.INTERNATIONAL JOURNAL OF CLIMATOLOGY. |
MLA | Singh, Nilendu,et al."Radiation and energy balance dynamics over a rapidly receding glacier in the central Himalaya".INTERNATIONAL JOURNAL OF CLIMATOLOGY (2019). |
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