Evaluation of five planetary boundary layer schemes in WRF over China’s largest semi-fixed desert
Evaluation of five planetary boundary layer schemes in WRF over China’s largest semi-fixed desert
复制标题
中国最大半固定沙漠 WRF 中五种行星边界层方案的评估
DOI：
10.1016/j.atmosres.2021.105567
复制
发表时间：
2021
影响因子：
5.5
通讯作者：
Ali Mamtimin
中科院分区：
文献类型：
--
作者：
Yu Wang;Hajigul Sayit;Ali Mamtimin
边界层参数化方案在数值天气预报模式中起着重要的作用。我们使用WRF 4.0模型评估了五个此类方案在中国古尔班通古特沙漠的适用性，并使用2019年7月收集的梯度塔，湍流，辐射和增强探测数据评估了性能。该模型表现出可接受的模拟能力，模拟温度低于观测值，而ACM 2模型表现出最小的冷偏差。在晴天和多云条件下，所有方案都能够模拟10 m风速的日变化，ACM 2和BL方案产生的前两个结果。所有方案合理地模拟了感热通量和土壤热通量的日变化。各方案模拟的边界层高度均具有合理的日变化特征，其中MYJ和ACM 2方案的精度最高。总体而言，ACM 2具有最高的通用性，最适合半固定沙漠边界层的气象要素研究。
PBL parameterization schemes play an important role in numerical weather prediction models. We evaluated the applicability of five such schemes in China's Gurbantünggüt Desert using the WRF 4.0 model, assessing performance using gradient tower, turbulence, radiation, and enhanced sounding data collected in July 2019. The model showed acceptable simulation ability, with simulated temperatures lower than observed values, while the ACM2 model showed a minimum cold bias. Under both clear sky and cloudy conditions, all schemes were able to simulate daily variations in 10 m wind speed, with the ACM2 and BL schemes producing the top two results. All schemes reasonably simulated daily variations in sensible and soil heat fluxes. The boundary layer height simulated by all schemes had reasonable diurnal variation characteristics, while the MYJ and ACM2 schemes had the highest accuracy. Overall, ACM2 had the highest universality and was most suitable for the study of meteorological elements in the PBL of a semi-fixed desert.