Atmospheric water-vapor detection using laser remote sensing

SPIE Newsroom ◽  
2008 ◽  
Author(s):  
Eduardo Landulfo
Keyword(s):  
Remote Sensing ◽  
Water Vapor ◽  
Atmospheric Water Vapor ◽  
Atmospheric Water ◽  
Vapor Detection ◽  
Laser Remote Sensing ◽  
Water Vapor Detection

scholarly journals THE FOUNDATION GPS WATER VAPOR INVERSION AND ITS APPLICATION RESEARCH

2018 ◽  
Vol XLII-3 ◽  
pp. 1093-1098
Author(s):  
R. Liu ◽  
T. Lee ◽  
H. Lv ◽  
C. Fan ◽  
Q. Liu
Keyword(s):  
Water Vapor ◽  
Atmospheric Water Vapor ◽  
Detection Methods ◽  
Atmospheric Water ◽  
Total Delay ◽  
Vapor Detection ◽  
Observation Network ◽  
Station Coordinates ◽  
Depth Study ◽  
Water Vapor Detection

Using GPS technology to retrieve atmospheric water vapor is a new water vapor detection method, which can effectively compensate for the shortcomings of conventional water vapor detection methods, to provide high-precision, large-capacity, near real-time water vapor information. In-depth study of ground-based GPS detection of atmospheric water vapor technology aims to further improve the accuracy and practicability of GPS inversion of water vapor and to explore its ability to detect atmospheric water vapor information to better serve the meteorological services. In this paper, the influence of the setting parameters of initial station coordinates, satellite ephemeris and solution observation on the total delay accuracy of the tropospheric zenith is discussed based on the observed data. In this paper, the observations obtained from the observation network consisting of 8 IGS stations in China in June 2013 are used to inverse the water vapor data of the 8 stations. The data of Wuhan station is further selected and compared with the data of Nanhu Sounding Station in Wuhan The error between the two data was between -6mm-6mm, and the trend of the two was almost the same, the correlation reached 95.8 %. The experimental results also verify the reliability of ground-based GPS inversion of water vapor technology.

Water vapor measurements in central México using two remote sensing techniques: FTIR spectroscopy and GPS

2020 ◽  
Author(s):  
Alain Zuber ◽  
Wolfgang Stremme ◽  
Michel Grutter ◽  
David Adams ◽  
Thomas Blumenstock ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Water Vapor ◽  
Ftir Spectroscopy ◽  
Hydrological Cycle ◽  
Atmospheric Water Vapor ◽  
Central Mexico ◽  
Atmospheric Water ◽  
Transport Pathways ◽  
Rainy Weather ◽  
Remote Sensing Techniques

<p><span>Atmospheric water vapor plays a key role in weather and climate. Knowledge about its variability, diurnal and seasonal cycles, as well as its long-term trend is necessary to improve our understanding of the hydrological cycle. H2O total columns are measured by the two remote sensing techniques, ground-based solar absorption FTIR spectroscopy and a GPS (Global Positioning System) receiver, over a site in central Mexico. The Altzomoni Atmospheric Observatory (3989 m a.s.l., 19.32ºN, 98.65ºW) is a high altitude station located within the Izta-Popo national park, 60 km SE from Mexico City. The time series of GPS and FTIR show a high correlation between coincident hourly means. Both techniques are complementary since despite that GPS works throughout day and night and also in cloudy and rainy weather conditions, the FTIR data provides in addition altitude-resolved information about the atmospheric water vapor and permits to distinguish different isotopes.</span></p><p><span>In this study, we show water vapor columns in the 2013 to 2019 period for this region retrieved from FTIR and GPS measurements and preliminary results about their isotopic composition (H216O, H218O and HD16O). We discuss the opportunity to study the hydrological cycle in central Mexico using the relationship between light and heavy isotopes, a relationship that gives valuable information about the sources and transport pathways.</span></p>

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