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Impacts of Hurricane Maria on Land and Convection Modification Over Puerto Rico
Journal of Geophysical Research: Atmospheres ( IF 4.4 ) Pub Date : 2020-12-09 , DOI: 10.1029/2020jd032493
N. Hosannah 1 , P. Ramamurthy 2 , J. Marti 3 , J. Munoz 3 , J. E. González 2
Affiliation  

Hurricane Maria drastically altered the landscape across the island of Puerto Rico. This article investigates modifications to surface‐atmospheric interactions due to Hurricane Maria induced land damage and the associated impacts on local convective dynamics. Herein, we employed LANDSAT‐8 image mosaics to quantify the hurricane induced land modification. Results of the analysis indicate that the island suffered significant forest damage—much of which registered as a 28.35% increase in barren land and a 10.85% increase in pasture. Smaller changes included a decrease in cultivated agricultural land cover by 0.76%, along with wetland and water increases of 0.62% and 0.25%, respectively. Pre and postMaria land classifications were then assimilated into the Regional Atmospheric Modeling System cloud resolving model for the simulation of the June 23 to July 2, 2018 period under two land conditions. Results of the numerical experiments indicate that surface to atmosphere interactions were significantly modified when the land cover was altered, and that the highest deviations between pre and postMaria convection occurred over elevated areas with extreme hurricane induced land changes, such as the Cordillera Central mountain range and the El Yunque rainforest.

中文翻译:

玛丽亚飓风对波多黎各土地和对流变化的影响

玛丽亚飓风极大地改变了波多黎各岛的景观。本文研究了由于飓风玛丽亚引起的土地破坏以及对局部对流动力学的相关影响而对地表与大气相互作用的影响。本文中,我们使用LANDSAT-8图像镶嵌来量化飓风引起的土地改良。分析结果表明,该岛遭受了严重的森林破坏,其中大部分为荒地增加了28.35%,牧场增加了10.85%。较小的变化包括耕地的耕地减少了0.76%,湿地和水的增加分别为0.62%和0.25%。然后将玛丽亚之前和之后的土地分类同化为区域大气建模系统云解析模型,以在两种土地条件下模拟2018年6月23日至7月2日的时期。数值实验结果表明,当土地覆盖改变时,地表与大气之间的相互作用发生了显着变化,并且Maria对流前后的最大偏差发生在飓风引起土地变化剧烈的高海拔地区,例如科迪勒拉山脉中部山脉和El Yunque雨林。
更新日期:2021-01-10
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