In this study, moist singular vector (MSV) was developed based on GRAPES-GEPS (Global/Regional Assimilation and Prediction System – Global Ensemble Prediction System), the adjoint model of large-scale condensation and cumulus deep convection in GRAPES-4DVar (Four-dimensional variational assimilation). Five consecutive days of numerical experiments were performed for a preliminary evaluation of MSV. The singular values, horizontal distribution structure, spread of MSVs perturbation and its influence on the ensemble prediction were compared for each group of tests. The results showed that in the middle and high latitudes of the northern and southern hemispheres, the addition of both linearized moist physical processes increased the spread of the mid- and low-level SVs, but the linearized large-scale condensation (LC) process plays a leading role in the structure of MSV. The analysis of ensemble forecast shows the inclusion of moist linearized physical processes led to a greater effect of MSV on the rainfall levels of 10 and 25 mm and a slight improvement in anomaly correlation coefficient (ACC) of the atmospheric circulation field, and more obvious improvement due to linearized large-scale condensation. In the future, continuous multi-year testing and tropical-specific analyses are required for operation.

Jing Wang

Jing Chen

Yongzhu Liu

Juanjuan Liu

Bin Wang

Xiaoli Li

FaJing Chen

Zhenhua Huo

ATMOSPHERE-OCEAN

ATMOSPHERE-OCEAN 是加拿大气象和海洋学会 (CMOS) 的主要科学期刊。它包含原始研究结果、调查文章、注释和对大气、海洋和水文科学所有领域已发表论文的评论。北极、沿海和中高纬度地区是特别令人感兴趣的地区。欢迎以英语或法语对以下主题进行应用或基础研究贡献：气候和气候学；观测技术、遥感；预测、建模、数值方法；物理学、动力学、化学、生物地球化学；边界层、污染、气溶胶；循环、云物理、水文、海气相互作用；海浪、冰、能量交换和相关的环境主题。

Atmosphere - Ocean is the primary scientific journal of the Canadian Meteorological and Oceanographic Society (CMOS). It features original research findings, survey articles, commentaries, and reviews of published papers across all fields of atmospheric, oceanic, and hydrological sciences. The journal particularly emphasizes research in the Arctic, coastal, and mid-to-high latitude regions. Contributions in English or French are welcome on the following topics: climate and climatology; observational techniques and remote sensing; forecasting, modeling, and numerical methods; physics, dynamics, chemistry, and biogeochemistry; boundary layers, pollution, and aerosols; circulation, cloud physics, hydrology, and air-sea interactions; waves, ice, energy exchanges, and related environmental themes.

《Atmosphere - Ocean》是加拿大气象和海洋学会（CMOS）出版的主要科学期刊。期刊内容包括原始研究成果、调查文章、注释以及对大气、海洋和水文科学各领域已发表论文的评论。特别关注北极、沿海和中高纬度地区的研究。欢迎以英语或法语提交以下主题的应用或基础研究：气候与气候学；观测技术与遥感；预测、建模和数值方法；物理学、动力学、化学和生物地球化学；边界层、污染和气溶胶；循环、云物理、水文和海气相互作用；海浪、冰、能量交换及相关环境主题。

Category	Quartile
地球科学	4
地球科学, 气象与大气科学	4
地球科学, 海洋学	4

Development of Moist Singular Vectors in GRAPES-GEPS and a Preliminary Evaluation

ivySCI AI Smartly Parses PDF, Answers Researchers' Questions, and Helps You Understand Papers in Seconds

Journal Info