Matches in SemOpenAlex for { <https://semopenalex.org/work/W4385727964> ?p ?o ?g. }
- W4385727964 abstract "Abstract Central North America is the global hotspot for tornadoes, fueled by elevated terrain of the Rockies to the west and a source of warm, moist air from equatorward oceans. This conventional wisdom argues that central South America, with the Andes to the west and Amazon basin to the north, should have a “tornado alley” at least as active as central North America. Central South America has frequent severe thunderstorms yet relatively few tornadoes. Here we show that conventional wisdom is missing an important ingredient specific to tornadoes: a smooth, flat ocean-like upstream surface. Using global climate model experiments, we show that central South American tornado potential substantially increases if its equatorward land surface is smoothed and flattened to be ocean-like. Similarly, we show that central North American tornado potential substantially decreases if its equatorward ocean surface is roughened to values comparable to forested land. A rough upstream surface suppresses the formation of tornadic environments principally by weakening the poleward low-level winds, characterized by a weakened low-level jet east of the mountain range. Results are shown to be robust for any midlatitude landmass using idealized experiments with a simplified continent and mountain range. Our findings indicate that large-scale upstream surface roughness helps generate the strong contrast in tornado activity between North and South America." @default.
- W4385727964 created "2023-08-11" @default.
- W4385727964 creator A5001452522 @default.
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- W4385727964 creator A5014213582 @default.
- W4385727964 creator A5031378556 @default.
- W4385727964 creator A5058729980 @default.
- W4385727964 date "2023-08-08" @default.
- W4385727964 modified "2023-09-27" @default.
- W4385727964 title "Upstream surface roughness and terrain drive contrast in tornado potential between North and South America" @default.
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