Title :
Maps of PWV Temporal Changes by SAR Interferometry: A Study on the Properties of Atmosphere´s Temperature Profiles
Author :
Mateus, Pedro ; Nico, Giovanni ; Catalao, Joao
Author_Institution :
Inst. Dom Luiz, Univ. of Lisbon, Lisbon, Portugal
Abstract :
Recently, synthetic aperture radar interferometry (InSAR) has been recognized as a promising tool to generate high-resolution maps of atmospherical precipitable water vapor temporal changes (ΔPWV) from the propagation delay of radar signal in atmosphere. The relationship between ΔPWV and propagation delay mainly depends on the vertical profiles of temperature and water vapor pressure. In this letter, we present a methodology to study the spatial and temporal variations of the temperature´s vertical profile and generate more accurate high-resolution ΔPWV maps by means of InSAR.
Keywords :
atmospheric humidity; atmospheric precipitation; atmospheric pressure; atmospheric techniques; atmospheric temperature; radar interferometry; synthetic aperture radar; InSAR; PWV temporal change map; SAR interferometry; accurate high-resolution DeltaPWV maps; atmosphere temperature profile properties; high-resolution atmospherical precipitable water vapor temporal change map; propagation delay; radar signal propagation delay; synthetic aperture radar interferometry; temperature vertical profile; temperature vertical profile spatial variation; temperature vertical profile temporal variation; water vapor pressure vertical profile; Atmospheric measurements; Atmospheric modeling; Delays; Global Positioning System; Synthetic aperture radar; Temperature measurement; Atmospheric phase delay; numerical weather model (NWM); precipitable water vapor (PWV); radiosondes; synthetic aperture radar interferometry (InSAR);
Journal_Title :
Geoscience and Remote Sensing Letters, IEEE
DOI :
10.1109/LGRS.2014.2318993
