Climate Change Data Portal
DOI | 10.5194/wcd-5-763-2024 |
Elevation-dependent warming: observations, models, and energetic mechanisms | |
Byrne, Michael P.; Boos, William R.; Hu, Shineng | |
发表日期 | 2024 |
EISSN | 2698-4016 |
起始页码 | 5 |
结束页码 | 2 |
卷号 | 5期号:2 |
英文摘要 | Observational data and numerical models suggest that, under climate change, elevated land surfaces warm faster than non-elevated ones. Proposed drivers of this elevation-dependent warming (EDW) include surface albedo and water vapour feedbacks, the temperature dependence of longwave emission, and aerosols. Yet the relative importance of each proposed mechanism both regionally and at large scales is unclear, highlighting an incomplete physical understanding of EDW.Here we expand on previous regional studies and use gridded observations, atmospheric reanalysis, and a range of climate model simulations to investigate EDW over the historical period across the tropics and subtropics (40 degrees S to 40 degrees N). Observations, reanalysis, and fully coupled models exhibit annual mean warming trends (1959-2014), binned by surface elevation, which are larger over elevated surfaces and broadly consistent across datasets. EDW varies by season, with stronger observed signals in local winter and autumn. Analysis of large ensembles of single-forcing simulations (1959-2005) suggests historical EDW is likely a forced response of the climate system rather than an artefact of internal variability and is primarily driven by increasing greenhouse gas concentrations.To gain quantitative insight into the mechanisms contributing to large-scale EDW, a forcing-feedback framework based on top-of-atmosphere energy balance is applied to the fully coupled models. This framework identifies the Planck and surface albedo feedbacks as being robust drivers of EDW (i.e. enhancing warming over elevated surfaces), with energy transport by the atmospheric circulation also playing an important role. In contrast, water vapour and cloud feedbacks along with weaker radiative forcing in elevated regions oppose EDW. Implications of the results for understanding future EDW are discussed. |
语种 | 英语 |
WOS研究方向 | Meteorology & Atmospheric Sciences |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS记录号 | WOS:001228710100001 |
来源期刊 | WEATHER AND CLIMATE DYNAMICS
![]() |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/289136 |
作者单位 | University of St Andrews; University of Oxford; University of California System; University of California Berkeley; United States Department of Energy (DOE); Lawrence Berkeley National Laboratory; Duke University |
推荐引用方式 GB/T 7714 | Byrne, Michael P.,Boos, William R.,Hu, Shineng. Elevation-dependent warming: observations, models, and energetic mechanisms[J],2024,5(2). |
APA | Byrne, Michael P.,Boos, William R.,&Hu, Shineng.(2024).Elevation-dependent warming: observations, models, and energetic mechanisms.WEATHER AND CLIMATE DYNAMICS,5(2). |
MLA | Byrne, Michael P.,et al."Elevation-dependent warming: observations, models, and energetic mechanisms".WEATHER AND CLIMATE DYNAMICS 5.2(2024). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。