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Surface-Based Remote Sensing of the Atmospheric Boundary Layer

2010-09-08 Science
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Release : 2010-09-08
Genre : Science
Kind : eBook
Book Rating : 400/5 ( reviews)

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Book Synopsis Surface-Based Remote Sensing of the Atmospheric Boundary Layer by : Stefan Emeis

Download or read book Surface-Based Remote Sensing of the Atmospheric Boundary Layer written by Stefan Emeis. This book was released on 2010-09-08. Available in PDF, EPUB and Kindle. Book excerpt: The book presents a comprehensive overview of the current state-of-the-art in the atmospheric boundary layer (ABL) research. It focuses on experimental ABL research, while most of the books on ABL discuss it from a theoretical or fluid dynamics point of view. Experimental ABL research has been made so far by surface-based in-situ experimentation (tower measurements up to a few hundred meters, surface energy balance measurements, short aircraft experiments, short experiments with tethered balloons, constant-level balloons, evaluation of radiosonde data). Surface flux measurements are also discussed in the book. Although the surface fluxes are one of the main driving factors for the daily variation of the ABL, an ABL description is only complete if its vertical structure is analyzed and determined. Satellite information is available covering large areas, but it has only limited temporal resolution and lacks sufficient vertical resolution. Therefore, surface-based remote sensing is a large challenge to enlarge the database for ABL studies, as it offers nearly continuous and vertically highly resolved information for specific sites of interest. Considerable progress has been made in the recent years in studying of ground-based remote sensing of the ABL. The book discusses such new subjects as micro-rain radars and the use of ceilometers for ABL profiling, modern small wind lidars for wind energy applications, ABL flux profile measurements, RASS techniques, and mixing-layer height determination.

The Future of Atmospheric Boundary Layer Observing, Understanding, and Modeling

2019-01-03 Science
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Release : 2019-01-03
Genre : Science
Kind : eBook
Book Rating : 239/5 ( reviews)

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Book Synopsis The Future of Atmospheric Boundary Layer Observing, Understanding, and Modeling by : National Academies of Sciences, Engineering, and Medicine

Download or read book The Future of Atmospheric Boundary Layer Observing, Understanding, and Modeling written by National Academies of Sciences, Engineering, and Medicine. This book was released on 2019-01-03. Available in PDF, EPUB and Kindle. Book excerpt: Improved observations of the atmospheric boundary layer (BL) and its interactions with the ocean, land, and ice surfaces have great potential to advance science on a number of fronts, from improving forecasts of severe storms and air quality to constraining estimates of trace gas emissions and transport. Understanding the BL is a crucial component of model advancements, and increased societal demands for extended weather impact forecasts (from hours to months and beyond) highlight the need to advance Earth system modeling and prediction. New observing technologies and approaches (including in situ and ground-based, airborne, and satellite remote sensing) have the potential to radically increase the density of observations and allow new types of variables to be measured within the BL, which will have broad scientific and societal benefits. In October 2017, the National Academies of Sciences, Engineering, and Medicine convened a workshop to explore the future of BL observations and their role in improving modeling and forecasting capabilities. Workshop participants discussed the science and applications drivers for BL observation, emerging technology to improve observation capabilities, and strategies for the future. This publication summarizes presentations and discussions from the workshop.

Ground-based Remote Sensing of the Summer Atmospheric Boundary Layer in Reno, Nevada, USA, Using Infrared Spectroscopy

2012 Boundary layer (Meteorology)
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Release : 2012
Genre : Boundary layer (Meteorology)
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Book Synopsis Ground-based Remote Sensing of the Summer Atmospheric Boundary Layer in Reno, Nevada, USA, Using Infrared Spectroscopy by : Narayan Adhikari

Download or read book Ground-based Remote Sensing of the Summer Atmospheric Boundary Layer in Reno, Nevada, USA, Using Infrared Spectroscopy written by Narayan Adhikari. This book was released on 2012. Available in PDF, EPUB and Kindle. Book excerpt: The atmospheric boundary layer (ABL) is the lowermost part of the atmosphere in the vicinity of the Earth's surface. It plays a vital role in the exchange of heat, momentum, humidity and other trace substances with the Earth's surface. The boundary layer is extremely important for air quality and health related issues as it is associated with the first few kilometers above the surface. Boundary layer height diurnally evolves as solar radiation waxes and wanes. Though balloon soundings of atmospheric temperature, pressure, and winds are performed in many world-wide locations, they are only done twice a day, primarily for large scale weather forecasting applications, leaving much of the boundary layer evolution and structure without assessment. Ground-based remote sensing methods have been developed to provide detailed knowledge of the boundary layer. This thesis presents the surface-based Fourier Transform Infrared (FTIR) spectrometer measurements of the downwelling thermal infrared radiance spectrum emitted by various gases in the cloud-free atmosphere. Measurements were carried out both in early morning hours and late in the afternoon where the temperature profile changes from inverted due to overnight radiative cooling by the surface, to super adiabatic due to intense solar heating at the surface. The measured spectra are compared to the model spectra to infer the structure of the boundary layer. A simple approximate analytical expression for the weighting function, which is crucial to solve the radiative transfer equation (RTE) and retrieve the temperature and gaseous concentration profiles of the ABL, has been developed. The validity of the analytical form of the weighting function was evaluated by comparison with a numerical model.

Boundary Layer Dynamics

1997-04-24 Science
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Release : 1997-04-24
Genre : Science
Kind : eBook
Book Rating : 426/5 ( reviews)

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Book Synopsis Boundary Layer Dynamics by : National Research Council

Download or read book Boundary Layer Dynamics written by National Research Council. This book was released on 1997-04-24. Available in PDF, EPUB and Kindle. Book excerpt:

Surface-based Remote Sensing of Marine Boundary-layer Mesoscale Cloud Structure During Astex

1994 Boundary layer (Meteorology)
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Release : 1994
Genre : Boundary layer (Meteorology)
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Book Synopsis Surface-based Remote Sensing of Marine Boundary-layer Mesoscale Cloud Structure During Astex by : Mark Alan Miller

Download or read book Surface-based Remote Sensing of Marine Boundary-layer Mesoscale Cloud Structure During Astex written by Mark Alan Miller. This book was released on 1994. Available in PDF, EPUB and Kindle. Book excerpt:

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