Advected airmass reservoirs in the downwind of mountains and their roles in overrunning boundary layer depths over the plains

Research output: Contribution to journalArticle

Abstract

Atmospheric boundary layer depths (BLDs) over continental sites have long been meticulously<br>characterized. However, a downwind‐footprint concept for BLDs over plains under the impact of seasonally<br>and spatially changing horizontal advection of BLDs off elevated terrains has remained unexplored. For the<br>first time, we provide observational evidence of the impact of mountains on regional BLDs using 25‐years<br>(1991–2015) of rawinsonde‐retrieved afternoon BLDs over 22 sites located in the mountains' (Rockies and<br>Appalachians) downstream. Results suggest that mountain‐advected air mass, elevated terrains, and wind<br>play a significant role in modulating BLD variability “miles away” from terrains. We found significant BLD<br>contrasts over the plains (400–1,500 m) under mountain‐advected versus flatland‐advected flows pertaining<br>to elevated mixed layers off the mountain ranges. The BLD contrasts were higher in the downwind of<br>Rockies than the Appalachians, and higher BL
Original languageEnglish
JournalGeophysical Research Letters
DOIs
StatePublished - Aug 15 2019

Fingerprint Dive into the research topics of 'Advected airmass reservoirs in the downwind of mountains and their roles in overrunning boundary layer depths over the plains'. Together they form a unique fingerprint.

  • Cite this