Results 31 to 40 of about 8,334 (293)

Weekly periodicities of Aerosol Optical Thickness over Central Europe – evidence of an anthropogenic direct aerosol effect

Atmospheric Chemistry and Physics, 2007
Abstract. Statistical analyses of data from ground-based sun photometer stations in Central Europe are presented. All stations are part of the Aerosol Robotic Network (AERONET), and only data of the highest data quality level 2.0 has been applied. The averages by weekday of Aerosol Optical Thickness (AOT) at a wavelength of 440 nm of 12 of the 14 ...
Bäumer, D., Rinke, R., Vogel, B.
openaire   +9 more sources

A simple parameterization of columnar aerosol optical thickness

Proceedings of the Estonian Academy of Sciences. Biology. Ecology, 2007
A simple engineering method for calculating the aerosol optical thickness at 500 nm (AOT500) is proposed for Estonian summer conditions. The method is expressed by a single formula and represents a simplified version of a more complicated model developed at Moscow University, which assumes fulfilment of the Ångström formula.
Martin Kannel, Hanno Ohvril, Hilda Teral, Viivi Russak, Ain Kallis   +4 more
openaire   +1 more source

Aerosol Optical Depth Retrievals over Thick Smoke Aerosols using GOES-17

, 2022
Abstract. Severe wildfires generate thick smoke plumes, which degrade particulate matter air quality near the surface. Satellite measurements provide spectacular views of these smoke aerosols and Aerosol Optical Depth (AOD), a columnar measure of aerosol concentration widely used in assessing air quality near the surface.
Xue, Zhixin, Christopher, Sundar
openaire   +2 more sources

Aerosol climatology over Japan site measured by ground-based sky radiometer [PDF]

, 2013
Aerosol and cloud optical properties are studied using data from ground-based and ship-borne sky radiometer measurements in the world. We are seeking in this data information on the aerosol optical characteristics with respect to their temporal and ...
Hayasaka, Tadahiro, Tadahiro Hayasaka, Takemura, Toshihiko, Toshihiko Takemura, Kawamoto, Kazuaki, Kazuaki Kawamoto, Aoki, Kazuma, Kazuma Aoki   +7 more
core   +1 more source

Is it possible to estimate aerosol optical depth from historic colour paintings? [PDF]

Climate of the Past, 2022
The idea of estimating stratospheric aerosol optical thickness from the twilight colours in historic paintings – particularly under conditions of volcanically enhanced stratospheric aerosol loading – is very tantalizing because it would provide ...
C. von Savigny, A. Lange, A. Hemkendreis, C. G. Hoffmann, A. Rozanov   +4 more
doaj   +1 more source

Fast and simple model for atmospheric radiative transfer [PDF]

, 2010
Radiative transfer models (RTMs) are of utmost importance for quantitative remote sensing, especially for compensating atmospheric perturbation. A persistent trade-off exists between approaches that prefer accuracy at the cost of computational complexity,
Schaepman, Michael E; https://orcid.org/, Seidel, F C, Kokhanowsky, A A, F. C. Seidel, Seidel, F.C., M. E. Schaepman, Schaepman, M.E., A. A. Kokhanovsky, Kokhanovsky, A.A.   +8 more
core   +1 more source

Classification of aerosol properties derived from AERONET direct sun data [PDF]

Atmospheric Chemistry and Physics, 2007
Aerosol spectral measurements by sunphotometers can be characterized by three independent pieces of information: 1) the optical thickness (AOT), a measure of the column aerosol concentration, 2) the optical thickness average spectral dependence, given by
G. P. Gobbi, Y. J. Kaufman, I. Koren, T. F. Eck, T. F. Eck   +4 more
doaj  

Evaluation of black carbon estimations in global aerosol models

, 2009
We evaluate black carbon (BC) model predictions from the AeroCom model intercomparison project by considering the diversity among year 2000 model simulations and comparing model predictions with available measurements.
Schulz, M., Bauer, S., Krol, M.C., McNaughton, C., Spackman, J.R., Balkanski, Y., Koch, D.   +6 more
core   +1 more source

Studies of atmospheric aerosols in the Russia Arctic regions

Лëд и снег, 2015
Chemical composition of snow and ice in the Arctic depends, to a considerable extent, on chemical composition of aerosol particles. Analysis of atmospheric aerosol characteristics in the boundary layer near Arctic settlements Tiksi (Summer 2010) and ...
L. P Golobokova, V. V. Polkin, D. M. Kabanov, S. A. Terpugova, D. G. Chernov, E. V. Chipanina, T. V. Khodzher, O. G. Netsvetaeva, M. V. Panchenko, S. M. Sakerin   +9 more
doaj   +1 more source

Characteristics of aerosol vertical profiles in Tsukuba, Japan, and their impacts on the evolution of the atmospheric boundary layer [PDF]

Atmospheric Measurement Techniques, 2018
Vertical profiles of the aerosol physical and optical properties, with a focus on seasonal means and on transport events, were investigated in Tsukuba, Japan, by a synergistic remote sensing method that uses lidar and sky radiometer data. The retrieved
R. Kudo, T. Aoyagi, T. Nishizawa
doaj   +1 more source