Added value of high-resolution regional climate model in simulating precipitation based on the changes in kinetic energy
Abstract As the resolution of regional climate models has increased with the development of computing resources, Added Values (AVs) have always been a steady research topic. Most previous studies examined AVs qualitatively by comparing model results with different model resolutions qualitatively. Th...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-10-01
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| Series: | Geoscience Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s40562-022-00247-6 |
| _version_ | 1811226764607750144 |
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| author | Gayoung Kim Jineun Kim Dong-Hyun Cha |
| author_facet | Gayoung Kim Jineun Kim Dong-Hyun Cha |
| author_sort | Gayoung Kim |
| collection | DOAJ |
| description | Abstract As the resolution of regional climate models has increased with the development of computing resources, Added Values (AVs) have always been a steady research topic. Most previous studies examined AVs qualitatively by comparing model results with different model resolutions qualitatively. This study tried to quantitatively investigate the AV of the high-resolution regional climate model for precipitation by analyzing the distribution of kinetic energy according to the different wavelengths at two different resolutions (36 km vs. 4 km), away from the traditional comparative analysis. In addition, the experiment that the low-resolution topography was forced to the high-resolution model was additionally conducted to separate the AVs associated with the topographic effect. Among the three experiments, two with the same topography and two with the exact horizontal resolution were compared separately. With identical topography, the high-resolution model simulated amplified precipitation intensity more than the low-resolution model in all quantiles, especially for extreme precipitation. The precipitation generated by mesoscale or smaller scale weather/climate events was also simulated with greater intensity in the high-resolution model. With the same grid spacing, the more detailed topography model showed AV for increasing spatial variability of precipitation, especially in mountainous regions. The AVs identified in this study were related to kinetic energy with wavelengths at the meso-beta or smaller scale. On the other hand, the kinetic energy above the meso-alpha or larger scale has no significant correlation with the AV of precipitation. |
| first_indexed | 2024-04-12T09:31:52Z |
| format | Article |
| id | doaj.art-f28ef76eb216451aa7f2b2578053417a |
| institution | Directory Open Access Journal |
| issn | 2196-4092 |
| language | English |
| last_indexed | 2024-04-12T09:31:52Z |
| publishDate | 2022-10-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Geoscience Letters |
| spelling | doaj.art-f28ef76eb216451aa7f2b2578053417a2022-12-22T03:38:21ZengSpringerOpenGeoscience Letters2196-40922022-10-019111410.1186/s40562-022-00247-6Added value of high-resolution regional climate model in simulating precipitation based on the changes in kinetic energyGayoung Kim0Jineun Kim1Dong-Hyun Cha2School of Urban and Environmental Engineering, Ulsan National Institute of Science & Technology (UNIST)Disaster Prevention Research Division, National Disaster Management Research InstituteSchool of Urban and Environmental Engineering, Ulsan National Institute of Science & Technology (UNIST)Abstract As the resolution of regional climate models has increased with the development of computing resources, Added Values (AVs) have always been a steady research topic. Most previous studies examined AVs qualitatively by comparing model results with different model resolutions qualitatively. This study tried to quantitatively investigate the AV of the high-resolution regional climate model for precipitation by analyzing the distribution of kinetic energy according to the different wavelengths at two different resolutions (36 km vs. 4 km), away from the traditional comparative analysis. In addition, the experiment that the low-resolution topography was forced to the high-resolution model was additionally conducted to separate the AVs associated with the topographic effect. Among the three experiments, two with the same topography and two with the exact horizontal resolution were compared separately. With identical topography, the high-resolution model simulated amplified precipitation intensity more than the low-resolution model in all quantiles, especially for extreme precipitation. The precipitation generated by mesoscale or smaller scale weather/climate events was also simulated with greater intensity in the high-resolution model. With the same grid spacing, the more detailed topography model showed AV for increasing spatial variability of precipitation, especially in mountainous regions. The AVs identified in this study were related to kinetic energy with wavelengths at the meso-beta or smaller scale. On the other hand, the kinetic energy above the meso-alpha or larger scale has no significant correlation with the AV of precipitation.https://doi.org/10.1186/s40562-022-00247-6Regional climate modelAdded ValueHorizontal resolutionKinetic energy |
| spellingShingle | Gayoung Kim Jineun Kim Dong-Hyun Cha Added value of high-resolution regional climate model in simulating precipitation based on the changes in kinetic energy Geoscience Letters Regional climate model Added Value Horizontal resolution Kinetic energy |
| title | Added value of high-resolution regional climate model in simulating precipitation based on the changes in kinetic energy |
| title_full | Added value of high-resolution regional climate model in simulating precipitation based on the changes in kinetic energy |
| title_fullStr | Added value of high-resolution regional climate model in simulating precipitation based on the changes in kinetic energy |
| title_full_unstemmed | Added value of high-resolution regional climate model in simulating precipitation based on the changes in kinetic energy |
| title_short | Added value of high-resolution regional climate model in simulating precipitation based on the changes in kinetic energy |
| title_sort | added value of high resolution regional climate model in simulating precipitation based on the changes in kinetic energy |
| topic | Regional climate model Added Value Horizontal resolution Kinetic energy |
| url | https://doi.org/10.1186/s40562-022-00247-6 |
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