Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2020.104946 |
Evaluation of land-atmosphere processes of the Polar WRF in the summertime Arctic tundra | |
Kim, Jeongwon1; Lee, Junhong1,6; Hong, Je-Woo2; Hong, Jinkyu1; Koo, Ja-Ho3; Kim, Joo-Hong4; Yun, Juyeol4,5; Nam, Sungjin4; Jung, Ji Young4; Choi, Taejin4; Lee, Bang Yong4 | |
2020-08-01 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2020 |
卷号 | 240 |
文章类型 | Article |
语种 | 英语 |
国家 | South Korea; Germany |
英文摘要 | Arctic tundra is undergoing a rapid transition due to global warming and will be exposed to snow-free conditions for longer periods under projected climate scenarios. Regional climate modeling is useful for understanding and predicting climate change in the Arctic tundra, however, the lack of in-situ observations of surface energy fluxes and the planetary boundary layer (PBL) structure hinders accurate predictions of local and regional climate around the Arctic. In this study, we investigate the performance of the Polar-optimized version of the Weather Research and Forecasting model (PWRF) in the Arctic tundra on clear days in summer. Based on simultaneous observations of surface fluxes and the PBL structure in Cambridge Bay, Nunavut, Canada, our validation shows that the PWRF simulates a drier environment, leading to a larger Bowen ratio and a warmer atmosphere compared to observations. Further sensitivity analyses indicate that the model biases are mainly from the uncertainties in physical parameters such as surface albedo and emissivity, the solar constant, and the model top height, rather than structural flaws in the model physics. Importantly, the PWRF reproduces the observations more accurately when the observed soil moisture is fed into the simulation. This indicates that there must be improvements in simulations of the land-atmosphere interaction at the Arctic tundra, not only in the accuracy of the initial soil moisture conditions but also in soil hydraulic properties and drainage processes. The mixing diagram analysis also shows that the entrainment process between the PBL and the overlying atmosphere needs to be improved for better weather and climate simulation. Our findings shed light on modeling studies in the Arctic region by disentangling the model error sources from uncertainties by parameters and physics package options. |
英文关键词 | Polar WRF Arctic tundra Land-atmosphere interaction Surface energy balance Soil moisture Planetary boundary layer |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000527314900013 |
WOS关键词 | POLYGONAL TUNDRA ; WEATHER RESEARCH ; CLIMATE-CHANGE ; SURFACE ; MODEL ; SYSTEM ; HETEROGENEITY ; SIBERIA |
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/289310 |
专题 | 地球科学 |
作者单位 | 1.Yonsei Univ, Dept Atmospher Sci, Ecosyst Atmosphere Proc Lab, Yonsei Ro 50, Seoul 03722, South Korea; 2.Korea Environm Inst, Sejong, South Korea; 3.Yonsei Univ, Dept Atmospher Sci, Atmospher Chem Lab, Seoul, South Korea; 4.Korea Polar Res Inst, Incheon, South Korea; 5.Korea Atom Energy Res Inst, Daejeon, South Korea; 6.Max Planck Inst Meteorol, Hamburg, Germany |
推荐引用方式 GB/T 7714 | Kim, Jeongwon,Lee, Junhong,Hong, Je-Woo,et al. Evaluation of land-atmosphere processes of the Polar WRF in the summertime Arctic tundra[J]. ATMOSPHERIC RESEARCH,2020,240. |
APA | Kim, Jeongwon.,Lee, Junhong.,Hong, Je-Woo.,Hong, Jinkyu.,Koo, Ja-Ho.,...&Lee, Bang Yong.(2020).Evaluation of land-atmosphere processes of the Polar WRF in the summertime Arctic tundra.ATMOSPHERIC RESEARCH,240. |
MLA | Kim, Jeongwon,et al."Evaluation of land-atmosphere processes of the Polar WRF in the summertime Arctic tundra".ATMOSPHERIC RESEARCH 240(2020). |
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