We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Four Years of Atmospheric Boundary Layer Height Retrievals Using COSMIC-2 Satellite Data.
- Authors
Garnés-Morales, Ginés; Costa, Maria João; Bravo-Aranda, Juan Antonio; Granados-Muñoz, María José; Salgueiro, Vanda; Abril-Gago, Jesús; Fernández-Carvelo, Sol; Andújar-Maqueda, Juana; Valenzuela, Antonio; Foyo-Moreno, Inmaculada; Navas-Guzmán, Francisco; Alados-Arboledas, Lucas; Bortoli, Daniele; Guerrero-Rascado, Juan Luis
- Abstract
This work aimed to study the atmospheric boundary layer height (ABLH) from COSMIC-2 refractivity data, endeavoring to refine existing ABLH detection algorithms and scrutinize the resulting spatial and seasonal distributions. Through validation analyses involving different ground-based methodologies (involving data from lidar, ceilometer, microwave radiometers, and radiosondes), the optimal ABLH determination relied on identifying the lowest refractivity gradient negative peak with a magnitude at least τ % times the minimum refractivity gradient magnitude, where τ is a fitting parameter representing the minimum peak strength relative to the absolute minimum refractivity gradient. Different τ values were derived accounting for the moment of the day (daytime, nighttime, or sunrise/sunset) and the underlying surface (land or sea). Results show discernible relations between ABLH and various features, notably, the land cover and latitude. On average, ABLH is higher over oceans (≈1.5 km), but extreme values (maximums > 2.5 km, and minimums < 1 km) are reached over intertropical lands. Variability is generally subtle over oceans, whereas seasonality and daily evolution are pronounced over continents, with higher ABLHs during daytime and local wintertime (summertime) in intertropical (middle) latitudes.
- Subjects
ATMOSPHERIC boundary layer; MICROWAVE radiometers; EXTREME value theory; ATMOSPHERIC water vapor measurement; LAND cover; BOUNDARY layer (Aerodynamics)
- Publication
Remote Sensing, 2024, Vol 16, Issue 9, p1632
- ISSN
2072-4292
- Publication type
Article
- DOI
10.3390/rs16091632