A Multi-Wavelength Mini Lidar for Measurements of Marine Boundary Layer Aerosol and Water Vapor Fields

2001 ◽  
Author(s):  
Shiv K. Sharma ◽  
Barry R. Lienert ◽  
John N. Porter ◽  
Antony D. Clarke
Keyword(s):  
Boundary Layer ◽  
Water Vapor ◽  
Marine Boundary Layer ◽  
Multi Wavelength

A Multi-wavelength Mini Lidar for Measurements of Marine Boundary Layer Aerosol and Water Vapor Fields

1997 ◽  
Author(s):  
Shiv K. Sharma ◽  
Antony D. Clarke ◽  
John N. Porter ◽  
Barry R. Lienert
Keyword(s):  
Boundary Layer ◽  
Water Vapor ◽  
Marine Boundary Layer ◽  
Multi Wavelength

Why sometimes its simply sunny (in the trades)

2021 ◽  
Author(s):  
Bjorn Stevens ◽  
Ilya Serikov ◽  
Anna Lea Albright ◽  
Sandrine Bony ◽  
Geet George ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Water Vapor ◽  
Marine Boundary Layer ◽  
Cloud Base ◽  
Lidar Signal ◽  
Cloud Base Height

<p>Cloud free skies are rare in the trades.  We analyze conditions in which cloud-free conditions prevail.  For this purpose Raman water vapor measurements from the Barbados Cloud Observatory, complemented by ship-based measurements during EUREC4A are used to explore water vapor variability in the marine boundary layer.   We explore the consistency of the inferred cloud base height with estimates of temperature and water vapor from the lidar signal, and examine the co-variability of these quantities.  After having established the properties of these measurements, we seek to use them as well as others, to explain in what ways periods of cloud-free conditions are maintained, investigating the hypothesis that only when the wind stills is it simply sunny.</p>

scholarly journals A Framework to Study Mixing Processes in the Marine Boundary Layer Using Water Vapor Isotope Measurements

2018 ◽  
Vol 45 (5) ◽  
pp. 2524-2532 ◽  
Author(s):  
M. Benetti ◽  
J.‐L. Lacour ◽  
A. E. Sveinbjörnsdóttir ◽  
G. Aloisi ◽  
G. Reverdin ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Water Vapor ◽  
Marine Boundary Layer ◽  
Mixing Processes ◽  
Isotope Measurements

scholarly journals Mission Configuration and Retrieval Technique for Profiling Water Vapor in the Marine Boundary Layer

2021 ◽  
Author(s):  
Stephen Leroy ◽  
Igor Polonsky ◽  
Alexandra Meredith ◽  
Kerri Cahoy ◽  
Lucy Halperin ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Water Vapor ◽  
Marine Boundary Layer ◽  
Retrieval Technique

scholarly journals Quantifying Marine Boundary Layer Water Vapor beneath Low Clouds with Near-Infrared and Microwave Imagery

2016 ◽  
Vol 55 (1) ◽  
pp. 213-225 ◽  
Author(s):  
Luis Millán ◽  
M. Lebsock ◽  
E. Fishbein ◽  
P. Kalmus ◽  
J. Teixeira
Keyword(s):  
Boundary Layer ◽  
Water Vapor ◽  
Near Infrared ◽  
Marine Boundary Layer ◽  
Reanalysis Data ◽  
Microwave Radiometry ◽  
Infrared Imagery ◽  
The Difference ◽  
Simple Equations ◽  
Cloud Top Pressure

AbstractThis study investigates the synergy of collocated microwave radiometry and near-infrared imagery to estimate the marine boundary layer water vapor beneath uniform cloud fields. Microwave radiometry provides the total column water vapor, while the near-infrared imagery provides the water vapor above the cloud layers. The difference between the two gives the vapor between the surface and the cloud top, which may be interpreted as the boundary layer water vapor. In combining the two datasets, we apply several flags as well as proximity tests to remove pixels with high clouds and/or intrapixel heterogeneity. Comparisons against radiosonde and ECMWF reanalysis data demonstrate the robustness of these boundary layer water vapor estimates. Last, it is shown that the measured AMSR-MODIS boundary layer water vapor can be analyzed using sea surface temperature and cloud-top pressure information by employing simple equations based on the Clausius–Clapeyron relationship.

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