Results 1 to 10 of about 2,055,953 (299)

Vertical profiles of dust and other aerosol types above a coastal site [PDF]

open access: yesE3S Web of Conferences, 2019
Monthly mean vertical profiles of aerosol type occurrences are determined from multiwavelength Raman and polarization lidar measurements above Haifa, Israel, in 2017. This contribution presents the applied methods and threshold values.
Althausen Dietrich   +6 more
doaj   +1 more source

Observations of The Lower-Tropospheric Temperature Profiles Using Three Wavelength CO2-DIAL [PDF]

open access: yesEPJ Web of Conferences, 2020
The eye-safe lower-tropospheric temperature profiler with three wavelength differential absorption lidar (DIAL) technique which can perform the continuous temperature profile observation through daytime and nighttime is conducted.
Shibata Yasukuni   +2 more
doaj   +1 more source

Studying the Afternoon Transition of the Planetary Boundary Layer [PDF]

open access: yesEos, Transactions American Geophysical Union, 2010
The planetary boundary layer is the part of the atmosphere that interacts directly with the Earth's surface on a time scale of a few hours or less. In daytime, solar heating of the surface can generate buoyant turbulent eddies that efficiently mix the air through a depth of more than a kilometer.
Lothon, Marie, H. Lenschow, Donald
openaire   +2 more sources

Investigation of the Impact of Complex Terrain on the Structure of Planetary Boundary Layer Using Vehicle-based Wind Lidar [PDF]

open access: yesEPJ Web of Conferences
This study investigates the Planetary Boundary Layer (PBL) dynamics over Taiwan's complex terrain using vehicle-based wind lidar. Results reveal significant spatial variability in aerosol distribution and wind patterns within the PBL, highlighting the ...
Chen Wei-Nai   +3 more
doaj   +1 more source

Self-organization and nonlocal nature of geophysical turbulence and planetary boundary layers

open access: yesГеофизический журнал, 2010
The classical paradigm of the theory of turbulence states that any turbulent flow can be considered as a superposition of the fully organized mean motion and the fully chaotic turbulence is characterized by the direct energy cascade (from larger to ...
S. S. Zilitinkevich
doaj   +1 more source

A novel post-processing algorithm for Halo Doppler lidars [PDF]

open access: yesAtmospheric Measurement Techniques, 2019
Commercially available Doppler lidars have now been proven to be efficient tools for studying winds and turbulence in the planetary boundary layer. However, in many cases low signal-to-noise ratio is still a limiting factor for utilising measurements by ...
V. Vakkari   +8 more
doaj   +1 more source

Determination of Planetary Boundary Layer height with Lidar Signals Using Maximum Limited Height Initialization and Range Restriction (MLHI-RR)

open access: yesRemote Sensing, 2020
The planetary boundary layer height (PBLH) is a vital parameter to characterize the surface convection, which determines the diffusion of air pollutants.
Tianfen Zhong   +5 more
doaj   +1 more source

Dynamics of turbulent western-boundary currents at low latitude in a shallow-water model [PDF]

open access: yesOcean Science, 2015
The dynamics of low latitude turbulent western-boundary currents (WBCs) crossing the Equator are considered using numerical results from integrations of a reduced-gravity shallow-water model.
C. Q. C. Akuetevi, A. Wirth
doaj   +1 more source

Characterization of atmospheric structures observed by a VHF MST-type radar in the troposphere over Santa Cruz, Costa Rica

open access: yesEarth, Planets and Space, 2019
Results from the first VHF profiler research radar in Costa Rica, operating at a central radar frequency of 46.6 MHz, are presented. Emphasis has been on studies of scattering layers detected in the altitude range 1–6 km, with the main goal being to ...
Marcial Garbanzo-Salas, Wayne Hocking
doaj   +1 more source

Set of Algorithms and Techniques for Accurate 3D, Single Beam – Single Pointing, Lidar Measurements for Slant Range Visibility, Planetary Boundary Layer Height and Wind Speed Retrieval, Atmospheric Layers Spatial Distribution and Categorization in Real Time [PDF]

open access: yesEPJ Web of Conferences, 2020
In this work, a full set of recently developed algorithms and techniques is presented, for a single beam-single pointing lidar to be able to perform operational and independent accurate 3 Dimensional (3D) measurements, for slant range visibility, wind ...
Pantazis Alexandros   +1 more
doaj   +1 more source

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