Terrain Effects on Regional Precipitation in a Warm Season over Qinling-Daba Mountains in Central China
The terrain effects of Qinling–Daba Mountains on reginal precipitation during a warm season were investigated in a two-month day-to-day experiment using the Weather Research and Forecasting (WRF) model. According to the results from the terrain sensitivity experiment with lowered mountains, Qinling–...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-12-01
|
| Series: | Atmosphere |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4433/12/12/1685 |
| _version_ | 1797506697600696320 |
|---|---|
| author | Xiaofei Li Ninglian Wang Zhanhao Wu |
| author_facet | Xiaofei Li Ninglian Wang Zhanhao Wu |
| author_sort | Xiaofei Li |
| collection | DOAJ |
| description | The terrain effects of Qinling–Daba Mountains on reginal precipitation during a warm season were investigated in a two-month day-to-day experiment using the Weather Research and Forecasting (WRF) model. According to the results from the terrain sensitivity experiment with lowered mountains, Qinling–Daba Mountains have been found to have an obvious effect on both the spatial-temporal distribution and diurnal cycle of reginal precipitation from July to August in 2019, where the Qinling Mountains mainly enhanced the precipitation around 34° N, and the Daba Mountains mainly enhanced it around 32° N at the time period of early morning and midnight. Horizontal distribution of water vapor and convective available potential energy (CAPE), as well as cross section of vertical velocity of wind and potential temperature has been studied to examine the key mechanisms for these two mountains’ effect. The existence of Qinling Mountains intercepted transportation of water vapor from South to North in the lower troposphere to across 34° N and caused an obvious enhancement of CAPE in the neighborhood, while the Daba Mountains intercepted the northward water vapor transportation to across 32° N and caused an enhanced CAPE nearby. The time period of the influence is in a good accordance with the diurnal cycle. In the cross-section, the existence of Qinling Mountains and Daba Mountains are found to stimulate the upward motion and unstable environment effectively at around 34° N and 32° N, separately. As a result, the existence of the two mountains lead to a favorable environment in water vapor, thermodynamic, and dynamic conditions for this warm season precipitation. |
| first_indexed | 2024-03-10T04:36:12Z |
| format | Article |
| id | doaj.art-f2d074be2df3411d824609ea19cffb96 |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-03-10T04:36:12Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-f2d074be2df3411d824609ea19cffb962023-11-23T03:47:23ZengMDPI AGAtmosphere2073-44332021-12-011212168510.3390/atmos12121685Terrain Effects on Regional Precipitation in a Warm Season over Qinling-Daba Mountains in Central ChinaXiaofei Li0Ninglian Wang1Zhanhao Wu2Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, ChinaShaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, ChinaXi’an Institute of Meteorological Science and Technology, Northwest University, Xi’an 710127, ChinaThe terrain effects of Qinling–Daba Mountains on reginal precipitation during a warm season were investigated in a two-month day-to-day experiment using the Weather Research and Forecasting (WRF) model. According to the results from the terrain sensitivity experiment with lowered mountains, Qinling–Daba Mountains have been found to have an obvious effect on both the spatial-temporal distribution and diurnal cycle of reginal precipitation from July to August in 2019, where the Qinling Mountains mainly enhanced the precipitation around 34° N, and the Daba Mountains mainly enhanced it around 32° N at the time period of early morning and midnight. Horizontal distribution of water vapor and convective available potential energy (CAPE), as well as cross section of vertical velocity of wind and potential temperature has been studied to examine the key mechanisms for these two mountains’ effect. The existence of Qinling Mountains intercepted transportation of water vapor from South to North in the lower troposphere to across 34° N and caused an obvious enhancement of CAPE in the neighborhood, while the Daba Mountains intercepted the northward water vapor transportation to across 32° N and caused an enhanced CAPE nearby. The time period of the influence is in a good accordance with the diurnal cycle. In the cross-section, the existence of Qinling Mountains and Daba Mountains are found to stimulate the upward motion and unstable environment effectively at around 34° N and 32° N, separately. As a result, the existence of the two mountains lead to a favorable environment in water vapor, thermodynamic, and dynamic conditions for this warm season precipitation.https://www.mdpi.com/2073-4433/12/12/1685Qinling–Daba Mountainsday-to-day simulationthermodynamicdynamic |
| spellingShingle | Xiaofei Li Ninglian Wang Zhanhao Wu Terrain Effects on Regional Precipitation in a Warm Season over Qinling-Daba Mountains in Central China Atmosphere Qinling–Daba Mountains day-to-day simulation thermodynamic dynamic |
| title | Terrain Effects on Regional Precipitation in a Warm Season over Qinling-Daba Mountains in Central China |
| title_full | Terrain Effects on Regional Precipitation in a Warm Season over Qinling-Daba Mountains in Central China |
| title_fullStr | Terrain Effects on Regional Precipitation in a Warm Season over Qinling-Daba Mountains in Central China |
| title_full_unstemmed | Terrain Effects on Regional Precipitation in a Warm Season over Qinling-Daba Mountains in Central China |
| title_short | Terrain Effects on Regional Precipitation in a Warm Season over Qinling-Daba Mountains in Central China |
| title_sort | terrain effects on regional precipitation in a warm season over qinling daba mountains in central china |
| topic | Qinling–Daba Mountains day-to-day simulation thermodynamic dynamic |
| url | https://www.mdpi.com/2073-4433/12/12/1685 |
| work_keys_str_mv | AT xiaofeili terraineffectsonregionalprecipitationinawarmseasonoverqinlingdabamountainsincentralchina AT ninglianwang terraineffectsonregionalprecipitationinawarmseasonoverqinlingdabamountainsincentralchina AT zhanhaowu terraineffectsonregionalprecipitationinawarmseasonoverqinlingdabamountainsincentralchina |