IF 1.9 4区地球科学

Sola Pub Date : 2023-11-28 DOI: 10.2151/sola.2024-001

Mikio Nakanishi

{"title":"Contribution of shallow convection to the localization of a band shaped area of heavy precipitation on 4 July 2020","authors":"Mikio Nakanishi","doi":"10.2151/sola.2024-001","DOIUrl":"https://doi.org/10.2151/sola.2024-001","url":null,"abstract":"On 4 July 2020, a quasi-stationary band-shaped area of heavy precipitation occurred near the center of Kyushu, Japan. The contribution of shallow convection to the localization of the precipitation area is examined using the Weather Research and Forecasting model. Two turbulent transport schemes, the Yonsei University scheme and the Mellor–Yamada–Nakanishi–Niino (MYNN) scheme, are selected. Simulations are performed for a 5-km horizontal resolution domain (SIM1) and a 1-km horizontal resolution domain nested within the 5-km resolution domain (SIM2). The results show that SIM1 predicts a more northerly bias than a radar/raingauge-analyzed precipitation area but provides a relatively small bias for the MYNN scheme, and SIM2 predicts the analyzed precipitation area reasonably well for both schemes. They also suggest that the improvement in SIM2s is due to the transition from shallow to deep convection upwind of the southwesterly wind, and the MYNN scheme with a partial condensation scheme in SIM1 reasonably simulates the growth of shallow convection by parameterizing the buoyancy production of turbulence associated with cloud formation. It is expected that the accurate prediction of shallow convection can improve the reproduction of the location of heavy precipitation areas.\u0000","PeriodicalId":49501,"journal":{"name":"Sola","volume":"53 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138538207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Land surface physics-based downscaling approach for agricultural meteorological prediction: Applicability for tropical-monsoon region, the Red River Delta, Vietnam 基于地表物理的农业气象预报降尺度方法:对越南红河三角洲热带季风区的适用性

IF 1.9 4区地球科学

Sola Pub Date : 2023-11-21 DOI: 10.2151/sola.2023-039

Mau Nguyen-Dang, Quang-Van Doan, Duong-Trịnh Hoang, Thanh-Hung Nguyen, Do Ngoc Khanh, Duong Cao Phan, Tam Tran-Thi, Hieu-Nguyen Van, Tuan Bui-Minh

{"title":"Land surface physics-based downscaling approach for agricultural meteorological prediction: Applicability for tropical-monsoon region, the Red River Delta, Vietnam","authors":"Mau Nguyen-Dang, Quang-Van Doan, Duong-Trịnh Hoang, Thanh-Hung Nguyen, Do Ngoc Khanh, Duong Cao Phan, Tam Tran-Thi, Hieu-Nguyen Van, Tuan Bui-Minh","doi":"10.2151/sola.2023-039","DOIUrl":"https://doi.org/10.2151/sola.2023-039","url":null,"abstract":"This study represents a pioneering effort to establish a downscaling framework named “land-surface-physics-based downscaling” (LSP-DS) for agricultural meteorological prediction in the tropical-monsoon region of the Red River Delta, Vietnam. The primary focus of this article is to evaluate the performance of LSP-DS on meteorological variables, specifically temperature and humidity. In details, LSP-DS, which is based on the NCAR's Noah Multi-Parameterizations land surface model, incorporated by recently developed land use/cover data for Vietnam released by JAXA, is forced by ERA5 data for 2013; and the results are compared with ground-based station observations. The results exhibit excellent performance of LSP-DS versus observations with consistently high correlation coefficient between the two, highlighting the high potential of using LSP-DS for real-time operational forecast. The LSP-DS performance varies with different sub land use/cover categories, implying that the proper parameter settings could be key point for improvement. The findings of this research underscore the dual strengths of the LSP-DS approach: its computational efficiency and its remarkable efficacy in predicting spatial heterogeneity of local climates. These attributes render it well-suited for agrometeorological forecasting in a tropical monsoon climate, exemplified by the Red River Delta in Vietnam.\u0000","PeriodicalId":49501,"journal":{"name":"Sola","volume":"172 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138538166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Diurnal SST warming and the boreal summer intraseasonal oscillation in the Philippine Sea: contrasts between early and late summer 菲律宾海海温日增温与北方夏季季节内振荡:夏初和夏末的对比

4区地球科学

Sola Pub Date : 2023-01-01 DOI: 10.2151/sola.2023-038

Ayako Seiki, Akira Nagano, Ning Zhao, Iwao Ueki, Satoru Yokoi

{"title":"Diurnal SST warming and the boreal summer intraseasonal oscillation in the Philippine Sea: contrasts between early and late summer","authors":"Ayako Seiki, Akira Nagano, Ning Zhao, Iwao Ueki, Satoru Yokoi","doi":"10.2151/sola.2023-038","DOIUrl":"https://doi.org/10.2151/sola.2023-038","url":null,"abstract":"The relationship between diurnal fluctuations of sea surface temperature (SST) in the Philippine Sea and the boreal summer intraseasonal oscillation (BSISO) and its difference between early and late summer are investigated using four-year (2017-2020) data of a moored buoy deployed at 137°E, 13°N. A strong diurnal cycle of SST is observed frequently during convectively suppressed phases of the BSISO, simultaneous with a weakening of surface winds and enhanced insolation. In addition, abrupt SST warming along with the strong diurnal cycle occurred in the middle of May in 2018 and 2019, in conjunction with the first BSISO of the year. Interestingly, the convectively suppressed phases of second BSISO showed small SST warming albeit the strong diurnal cycle, which can be attributed to a deepening of the warm isothermal layer. In the remaining two years, 2017 and 2020, SST increased gradually with small diurnal SST amplitude, which is presumably attributed to continuous surface winds with moderate strengths mixing the upper ocean. Moreover, the first BSISO was observed in late summer. These results suggest that the abrupt SST warming associated with the strong diurnal cycle is linked to the seasonal onset of the BSISO.","PeriodicalId":49501,"journal":{"name":"Sola","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135267163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Regional extreme precipitation events in wintertime Japan facilitated by East-Asian large-scale flow patterns 东亚大尺度环流模式对日本冬季区域极端降水事件的促进作用

4区地球科学

Sola Pub Date : 2023-01-01 DOI: 10.2151/sola.2023-033

Takumi Matsunobu, Julian F. Quinting, Christian M. Grams, Mio Matsueda

{"title":"Regional extreme precipitation events in wintertime Japan facilitated by East-Asian large-scale flow patterns","authors":"Takumi Matsunobu, Julian F. Quinting, Christian M. Grams, Mio Matsueda","doi":"10.2151/sola.2023-033","DOIUrl":"https://doi.org/10.2151/sola.2023-033","url":null,"abstract":"The statistical and dynamical relationships between regional extreme precipitation events (EPEs) during wintertime in five Japanese regions and East-Asian synoptic weather patterns are addressed. 4 Two of the five weather patterns, the southerly flow (SF) and low pressure (LP), are associated with about 50% of EPEs in all the regions. A regional dependency is found, with SF being more likely to cause extreme precipitation in two regions in the south of Japan and LP in the other regions, respectively. The large-scale dynamics leading to EPEs in each region are assessed by a combined Lagrangian and Eulerian analysis. In the two southern regions, EPEs are predominantly associated with direct moisture supply from the subtropical oceans. This is modulated by the large-scale flow pattern of SF. In contrast, EPEs in the northern coastal areas of the Sea of Japan and the Pacific Ocean are influenced by anomalous moisture supply from the cyclone-induced moisture convergence modulated by LP. The eastern coastal region of the Sea of Japan shows a mixture of both these moisture supply mechanisms. The strong link between EPEs and synoptic patterns might help to improve predictions of extreme events, even on the sub-seasonal forecast horizon.","PeriodicalId":49501,"journal":{"name":"Sola","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135446361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Monitoring of recent aridification in Türkiye using MODIS satellite data from 2000 to 2021 利用2000 - 2021年MODIS卫星数据监测<s:1>基尔基耶近期干旱化情况

IF 1.9 4区地球科学

Sola Pub Date : 2023-01-01 DOI: 10.2151/sola.2023-013

R. Kimura, M. Moriyama, L. Şaylan

引用次数: 0

Water vapor in the upper troposphere above Syowa Station in the Antarctic: Its variations and causes 南极Syowa站对流层上层水汽的变化及其成因

IF 1.9 4区地球科学

Sola Pub Date : 2023-01-01 DOI: 10.2151/sola.2023-012

Y. Tomikawa, M. Kohma, M. Takeda, Kaoru Sato

引用次数: 1

Intercomparison of Synthetic Inflow Turbulence Generation Methods for Large-Eddy Simulation Models in Thermally Driven Convective Boundary Layer Simulations 热驱动对流边界层模拟中大涡模拟模型综合入流湍流产生方法的比较