TY - JOUR
T1 - Contrasting air mass advection explains significant differences in boundary layer depth seasonal cycles under onshore versus offshore flows
AU - Pal, Sandip
PY - 2019/2/22
Y1 - 2019/2/22
N2 - The complexities in the atmospheric boundary layer depth (BLD) features over coastal regionspose challenges for meteorological forecasts, air quality, greenhouse gas mixing and transport, and windenergy production. Here, for the first time, we investigated afternoon BLD variability over 18 coastal sites inthe contiguous United States located along the Gulf of Mexico, Atlantic Ocean, and Pacific Ocean using25 years of rawinsonde launches. Due to influence of shallow marine layer air via onshore flow, substantiallylarge BLD contrasts (ΔBLD, BLD under offshore minus onshore) were found. ΔBLDs over the sites variedboth seasonally and spatially among the coastal regions and within a region. For the sites along the Gulf ofMexico and Atlantic Ocean, ΔBLDs were found to be higher in spring and summer (500–1,500 m) than inwinter and fall (100–450 m). Results underscore the importance of advection on BLD footprints and provideobservational constraints for mod
AB - The complexities in the atmospheric boundary layer depth (BLD) features over coastal regionspose challenges for meteorological forecasts, air quality, greenhouse gas mixing and transport, and windenergy production. Here, for the first time, we investigated afternoon BLD variability over 18 coastal sites inthe contiguous United States located along the Gulf of Mexico, Atlantic Ocean, and Pacific Ocean using25 years of rawinsonde launches. Due to influence of shallow marine layer air via onshore flow, substantiallylarge BLD contrasts (ΔBLD, BLD under offshore minus onshore) were found. ΔBLDs over the sites variedboth seasonally and spatially among the coastal regions and within a region. For the sites along the Gulf ofMexico and Atlantic Ocean, ΔBLDs were found to be higher in spring and summer (500–1,500 m) than inwinter and fall (100–450 m). Results underscore the importance of advection on BLD footprints and provideobservational constraints for mod
M3 - Article
JO - Geophysical Research Letters
JF - Geophysical Research Letters
ER -