Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-19-0149.1 |
Cloud Influence on ERA5 and AMPS Surface Downwelling Longwave Radiation Biases in West Antarctica | |
Silber, Israel1; Verlinde, Johannes1; Wang, Sheng-Hung2; Bromwich, David H.2,3; Fridlind, Ann M.4; Cadeddu, Maria5; Eloranta, Edwin W.6; Flynn, Connor J.7 | |
2019-11-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:22页码:7935-7949 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The surface downwelling longwave radiation component (LW down arrow) is crucial for the determination of the surface energy budget and has significant implications for the resilience of ice surfaces in the polar regions. Accurate model evaluation of this radiation component requires knowledge about the phase, vertical distribution, and associated temperature of water in the atmosphere, all of which control the LW down arrow signal measured at the surface. In this study, we examine the LW down arrow model errors found in the Antarctic Mesoscale Prediction System (AMPS) operational forecast model and the ERA5 model relative to observations from the ARM West Antarctic Radiation Experiment (AWARE) campaign at McMurdo Station and the West Antarctic Ice Sheet (WAIS) Divide. The errors are calculated separately for observed clear-sky conditions, ice-cloud occurrences, and liquid-bearing cloud-layer (LBCL) occurrences. The analysis results show a tendency in both models at each site to underestimate the LW down arrow during clear-sky conditions, high error variability (standard deviations > 20 W m(-2)) during any type of cloud occurrence, and negative LW down arrow biases when LBCLs are observed (bias magnitudes >15 W m(-2) in tenuous LBCL cases and >43 W m(-2) in optically thick/opaque LBCLs instances). We suggest that a generally dry and liquid-deficient atmosphere responsible for the identified LW down arrow biases in both models is the result of excessive ice formation and growth, which could stem from the model initial and lateral boundary conditions, microphysics scheme, aerosol representation, and/or limited vertical resolution. |
英文关键词 | Antarctica Cloud radiative effects Cloud water phase Longwave radiation Water vapor Model errors |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000492863100002 |
WOS关键词 | ROSS ICE SHELF ; BOUNDARY-LAYER SIMULATIONS ; POLAR WEATHER RESEARCH ; ARCTIC CLOUD ; PART I ; CLIMATE ; MODEL ; WATER ; TEMPERATURE ; REANALYSES |
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/188127 |
专题 | 气候变化 |
作者单位 | 1.Penn State Univ, Dept Meteorol & Atmospher Sci, University Pk, PA 16802 USA; 2.Ohio State Univ, Polar Meteorol Grp, Byrd Polar & Climate Res Ctr, Columbus, OH 43210 USA; 3.Ohio State Univ, Dept Geog, Atmospher Sci Program, Columbus, OH 43210 USA; 4.NASA, Goddard Inst Space Studies, New York, NY 10025 USA; 5.Argonne Natl Lab, New York, NY USA; 6.Univ Wisconsin, Space Sci & Engn Ctr, Madison, WI USA; 7.Pacific Northwest Natl Lab, Richland, WA USA |
推荐引用方式 GB/T 7714 | Silber, Israel,Verlinde, Johannes,Wang, Sheng-Hung,et al. Cloud Influence on ERA5 and AMPS Surface Downwelling Longwave Radiation Biases in West Antarctica[J]. JOURNAL OF CLIMATE,2019,32(22):7935-7949. |
APA | Silber, Israel.,Verlinde, Johannes.,Wang, Sheng-Hung.,Bromwich, David H..,Fridlind, Ann M..,...&Flynn, Connor J..(2019).Cloud Influence on ERA5 and AMPS Surface Downwelling Longwave Radiation Biases in West Antarctica.JOURNAL OF CLIMATE,32(22),7935-7949. |
MLA | Silber, Israel,et al."Cloud Influence on ERA5 and AMPS Surface Downwelling Longwave Radiation Biases in West Antarctica".JOURNAL OF CLIMATE 32.22(2019):7935-7949. |
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。
修改评论