Results 91 to 100 of about 28,409 (225)

SAWA experiment ? properties of mineral dust aerosol as seen by synergic lidar and sun-photometer measurements

, 2006
International audienceWe propose a method of retrieving basic information on mineral dust aerosol particles from synergic sun-photometer and multi-wavelength lidar measurements as well as from the observations of lidar light depolarisation.
Hochhertz, C., Karasi?ski, G., Kardas, A. E., Malinowski, S. P., Markowicz, K. M., Stacewicz, T., Stelmaszczyk, K., Woeste, L.   +7 more
core   +2 more sources

Mineral dust in Central Asia: Combining lidar and other measurements during the Central Asian dust experiment (CADEX)

EPJ Web of Conferences, 2018
Mineral dust needs to be characterized comprehensively since it contributes to the climate change in Tajikistan / Central Asia. Lidar results from the measurements of mineral dust during CADEX are compared with results of sun photometer measurements ...
Althausen Dietrich, Hofer Julian, Abdullaev Sabur, Makhmudov Abduvosit, Baars Holger, Engelmann Ronny, Wadinga Fomba Khanneh, Müller Konrad, Schettler Georg, Klüser Lars, Kandler Konrad   +10 more
doaj   +1 more source

Novel Hyperspectral Sun Photometer for Satellite Remote Sensing Data Radiometric Calibration and Atmospheric Aerosol Studies [PDF]

A simple and cost-effective, hyperspectral sun photometer for radiometric vicarious remote sensing system calibration, air quality monitoring, and potentially in-situ planetary climatological studies, was developed. The device was constructed solely from
Frisbie, Troy, Harrington, Gary, Holekamp, Kara, Pagnutti, Mary, Ryan, Robert E.   +4 more
core   +1 more source

The STARTWAVE atmospheric water database [PDF]

Atmospheric Chemistry and Physics, 2006
The STARTWAVE (STudies in Atmospheric Radiative Transfer and Water Vapour Effects) project aims to investigate the role which water vapour plays in the climate system, and in particular its interaction with radiation.
J. Morland, B. Deuber, B. Deuber, D. G. Feist, L. Martin, S. Nyeki, S. Nyeki, N. Kämpfer, C. Mätzler, P. Jeannet, L. Vuilleumier   +10 more
doaj  

Sun-Pointing-Error Correction for Sea Deployment of the MICROTOPS II Handheld Sun Photometer

Journal of Atmospheric and Oceanic Technology, 2003
Handheld sun photometers, such as the MICROTOPS II (manufactured by Solar Light, Inc.), provide a simple and inexpensive way to measure in situ aerosol optical thickness (AOT), ozone content, and water vapor. Handheld sun photometers require that the user manually point the instrument at the sun. Unstable platforms, such as a ship at sea, can make this
Kirk D. Knobelspiesse, Christophe Pietras, Giulietta S. Fargion   +2 more
openaire   +1 more source

Evaluation of “on site” calibration procedures for sun-sky photometers

, 2023
Abstract. To retrieve columnar aerosol properties from sun-photometers both irradiance and radiance calibration factors are needed. For the irradiance the solar calibration constant, V0, that is the instrument counts for a direct normal solar flux extrapolated to the top of the atmosphere, must be determined.
Monica Campanelli, Victor Estelles, Gaurav Kumar, Teruyuki Nakajima, Masahiro Momoi, Julian Gröbner, Stelios Kazadzis, Natalia Kouremeti, Angelos Karanikolas, Africa Barreto, Saulius Nevas, Kerstin Schwind, Phillipp Schneider, Iiro Harju, Petri Kärhä, Henri Diémoz, Rei Kudo, Akihiro Uchiyama, Akihiro Yamazaki, Anna Maria Iannarelli, Gabriele Mevi, Annalisa Di Bernardino, Stefano Casadio   +22 more
openaire   +1 more source

Emerging Techniques for Vicarious Calibration of Visible Through Short Wave Infrared Remote Sensing Systems [PDF]

Autonomous Visible to SWIR ground-based vicarious Cal/Val will be an essential Cal/Val component with such a large number of systems. Radiometrically calibrated spectroradiometers can improve confidence in current ground truth data through validation of ...
Frisbie, Troy, Harrington, Gary, Holekamp, Kara, Pagnutti, Mary, Russell, Jeffrey, Ryan, Robert E., Stanley, Thomas   +6 more
core   +1 more source

CSU FIRE 2 cirrus field experiment: Description of field deployment phase [PDF]

, 1992
The Colorado State University (CSU) surface observing systems are described. These systems were deployed at the Parsons, Kansas site during the FIRE 2 Cirrus Special Observing Period (SOP) from 13 Nov. - 7 Dec. 1991.
Alvarez, J., Anikin, P., Beck, G., Cornwall, C., Cox, S., Davis, J., Hein, P., Lappen, C., Song, R., Wood, D., Wothrow, J.   +10 more
core   +1 more source

Optical SETI Observations of the Anomalous Star KIC 8462852

, 2015
To explore the hypothesis that KIC 8462852's aperiodic dimming is caused by artificial megastructures in orbit (Wright et al. 2015), rather than a natural cause such as cometary fragments in a highly elliptical orbit (Marengo et al.
Richards, Jon, Schuetz, Marlin, Shostak, Seth, Vakoch, Douglas A.   +3 more
core   +1 more source

The Little Photometer That Could: Technical Challenges and Science Results from the Kepler Mission [PDF]

The Kepler spacecraft launched on March 7, 2009, initiating NASA's first search for Earth-size planets orbiting Sun-like stars. Since launch, Kepler has announced the discovery of 17 exoplanets, including a system of six transiting a Sun-like star ...
Dunnuckb, Jeb, Jenkins, Jon M.
core   +1 more source