Evaporative Controls on Convective Adjustment: A Satellite-Based Assessment of Convective Available Energy (CAPE) During Surface Drydowns
Changes in surface properties are known to influence weather and climate through interactions between the land and atmosphere. In convective atmospheres, convective available potential energy (CAPE) drives convective adjustment and can lead to precipitation. We study the evolution of CAPE during dry...
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| Format: | Thesis |
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Massachusetts Institute of Technology
2022
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| Online Access: | https://hdl.handle.net/1721.1/144854 |
| _version_ | 1826217831062044672 |
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| author | Zhang, Lily N. |
| author2 | Entekhabi, Dara |
| author_facet | Entekhabi, Dara Zhang, Lily N. |
| author_sort | Zhang, Lily N. |
| collection | MIT |
| description | Changes in surface properties are known to influence weather and climate through interactions between the land and atmosphere. In convective atmospheres, convective available potential energy (CAPE) drives convective adjustment and can lead to precipitation. We study the evolution of CAPE during drydowns, interstorm periods over which evapotranspiration occurs, to understand the impact of evaporative controls on convective adjustment. Our results show that drydown CAPE development varies geographically based on hydroclimate and can also depend on initial soil moisture content and moist enthalpy conditions. The impact of these factors on CAPE can be explained by their effect on evaporation, demonstrating the importance of evaporative controls on convective adjustment and providing a benchmark for understanding the relationship between soil moisture and precipitation. |
| first_indexed | 2024-09-23T17:09:50Z |
| format | Thesis |
| id | mit-1721.1/144854 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T17:09:50Z |
| publishDate | 2022 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/1448542022-08-30T03:01:05Z Evaporative Controls on Convective Adjustment: A Satellite-Based Assessment of Convective Available Energy (CAPE) During Surface Drydowns Zhang, Lily N. Entekhabi, Dara Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Changes in surface properties are known to influence weather and climate through interactions between the land and atmosphere. In convective atmospheres, convective available potential energy (CAPE) drives convective adjustment and can lead to precipitation. We study the evolution of CAPE during drydowns, interstorm periods over which evapotranspiration occurs, to understand the impact of evaporative controls on convective adjustment. Our results show that drydown CAPE development varies geographically based on hydroclimate and can also depend on initial soil moisture content and moist enthalpy conditions. The impact of these factors on CAPE can be explained by their effect on evaporation, demonstrating the importance of evaporative controls on convective adjustment and providing a benchmark for understanding the relationship between soil moisture and precipitation. S.B. 2022-08-29T16:16:22Z 2022-08-29T16:16:22Z 2022-05 2022-05-27T16:09:22.355Z Thesis https://hdl.handle.net/1721.1/144854 In Copyright - Educational Use Permitted Copyright retained by author(s) https://rightsstatements.org/page/InC-EDU/1.0/ application/pdf Massachusetts Institute of Technology |
| spellingShingle | Zhang, Lily N. Evaporative Controls on Convective Adjustment: A Satellite-Based Assessment of Convective Available Energy (CAPE) During Surface Drydowns |
| title | Evaporative Controls on Convective Adjustment: A Satellite-Based Assessment of Convective Available Energy (CAPE) During Surface Drydowns |
| title_full | Evaporative Controls on Convective Adjustment: A Satellite-Based Assessment of Convective Available Energy (CAPE) During Surface Drydowns |
| title_fullStr | Evaporative Controls on Convective Adjustment: A Satellite-Based Assessment of Convective Available Energy (CAPE) During Surface Drydowns |
| title_full_unstemmed | Evaporative Controls on Convective Adjustment: A Satellite-Based Assessment of Convective Available Energy (CAPE) During Surface Drydowns |
| title_short | Evaporative Controls on Convective Adjustment: A Satellite-Based Assessment of Convective Available Energy (CAPE) During Surface Drydowns |
| title_sort | evaporative controls on convective adjustment a satellite based assessment of convective available energy cape during surface drydowns |
| url | https://hdl.handle.net/1721.1/144854 |
| work_keys_str_mv | AT zhanglilyn evaporativecontrolsonconvectiveadjustmentasatellitebasedassessmentofconvectiveavailableenergycapeduringsurfacedrydowns |