Microphysics of Summer Clouds in Central West Antarctica Simulated by Polar WRF and AMPS
Microphysics of Summer Clouds in Central West Antarctica Simulated by Polar WRF and AMPS
复制标题
极地 WRF 和 AMPS 模拟的南极洲中西部夏季云的微物理
DOI：
--
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
D. Lubin
中科院分区：
文献类型：
--
作者：
K. Hines;D. Bromwich;Sheng‐Hung Wang;I. Silber;J. Verlinde;D. Lubin
抽象的。大气辐射测量（ARM）西南极辐射实验（AWARE）提供了一套非常详细的遥感和地表观测，以研究南极云和地表能量平衡，由于更大的后勤挑战，南极云和地表能量平衡受到的关注远远低于北极。有限的前期南极云观测减缓了该地区数值天气预报的进展。2015年12月和2016年1月期间WAIS Divide的AWARE观测用于评估南极中尺度预报系统（AMPS）的业务预报和Polar WRF 3.9.1的新模拟。Polar WRF 3.9.1模拟采用先进的微物理方案和AMPS也使用的WRF单矩5类微物理（WSM 5C）进行。AMPS在夏季在WAIS分水岭模拟了很少的液云，与频繁的低空液云观测不一致。Polar WRF 3.9.1模拟表明，该结果是WSM 5C的结果。更先进的微物理方案模拟了更多的云液态水，产生更强的云辐射强迫，导致地面向下的长波和短波辐射与观测更一致。同样，云分数的增加是用更先进的微物理方案模拟的。然而，所有的模拟都产生了比观测到的更小的净云分数。冰水路径在模拟之间的变化小于液态水路径。由GFS初始和边界条件驱动的AMPS预报的较冷和较干燥的大气产生的云量比由ERA-Interim驱动的Polar WRF 3.9.1模拟少。
Abstract. The Atmospheric Radiation Measurement (ARM) West Antarctic Radiation Experiment (AWARE) provided a highly detailed set of remote sensing and surface observations to study Antarctic clouds and surface energy balance, which have received much less attention than for the Arctic due to greater logistical challenges. Limited prior Antarctic cloud observations has slowed the progress of numerical weather prediction in this region. The AWARE observations from WAIS Divide during December 2015 and January 2016 are used to evaluate the operational forecasts of the Antarctic Mesoscale Prediction System (AMPS) and new simulations with Polar WRF 3.9.1. The Polar WRF 3.9.1 simulations are conducted with advanced microphysics schemes and with the WRF single-moment 5-class microphysics (WSM5C) also used by AMPS. AMPS simulates few liquid clouds during summer at WAIS Divide, inconsistent with observations of frequent low-level liquid clouds. Polar WRF 3.9.1 simulations show that this result is a consequence of WSM5C. More advanced microphysics schemes simulate more cloud liquid water and produce stronger cloud radiative forcing, resulting in downward longwave and shortwave radiation at the surface more in agreement with observations. Similarly, increased cloud fraction is simulated with the more advanced microphysics schemes. All of the simulations, however, produce smaller net cloud fractions than observed. Ice water paths vary less between the simulations than liquid water paths. The colder and drier atmosphere driven by GFS initial and boundary conditions for AMPS forecasts produces lesser cloud amounts than the Polar WRF 3.9.1 simulations driven by ERA-Interim.
MAC 活动期间南极洲沿海云微物理和气溶胶的现场测量
DOI：
10.5194/acp-2017-212
发表时间：
2017
期刊：
--
影响因子：
--
作者：
O'Shea S
通讯作者：
O'Shea S
飞机对南极半岛和拉森冰架上空云层内冰浓度的现场观测
影响因子：
6.3
作者：
Grosvenor D
通讯作者：
Grosvenor D