Zobrazeno 1 - 10
of 148
pro vyhledávání: '"W.F.J. Evans"'
Autor:
W.F.J. Evans, E. Puckrin
Publikováno v:
Advances in Space Research. 33:1073-1076
In this paper we provide a comparison of the change in the solar flux with the surface forcing from greenhouse gases, particularly that of carbon dioxide which is increasing in the atmosphere due to fossil fuel combustion processes. This comparison s
Autor:
E. Puckrin, W.F.J. Evans
Publikováno v:
Advances in Space Research. 32:2153-2158
A new technique for the calibration of satellite instruments for atmospheric ozone measurements with a sealed ozone cell is described. Spectral measurements of the ozone absorption from a sealed gas cell are measured with a FTIR to determine the amou
Autor:
W.F.J. Evans, Christopher E. Sioris
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 72:227-236
The polarization and phase of multiply scattered light spectra in a homogeneous Rayleigh atmosphere are modelled using iterated integrals of molecular scattering phase functions. This method simulates the degree of linear polarization (LP) in the con
Autor:
W.F.J. Evans, E. Puckrin
Publikováno v:
Atmospheric Environment. 35:71-77
Ground-based, high-resolution measurements of downward atmospheric thermal emission spectra are reported for a northern mid-latitude location for summer and winter conditions. These measurements clearly show the presence of the 11.3-μm thermal emiss
Autor:
E. Puckrin, W.F.J. Evans
Publikováno v:
Atmospheric Environment. 33:2081-2088
A new technique using ground-based FTIR spectroscopy has been developed to investigate the vertical distribution of carbon monoxide in the atmosphere. Complementary measurements of atmospheric emission and solar absorption over the infrared region ha
Publikováno v:
Atmospheric Environment. 30:563-568
A new technique has been developed for the remote sensing of tropospheric ozone. In this technique the thermal radiation from ozone is measured against the cold background blackbody emission of clouds using ground-based FTIR spectroscopy. Preliminary
Publikováno v:
Advances in Space Research. 14:285-288
The WINDII instrument on the UARS satellite has several filter channels. In each of these channels, Rayleigh scattering from the earth's atmosphere is measured in the daytime. The Rayleigh scattering component varies quasi-exponentially with altitude
Autor:
W.F.J. Evans, L. Poulin
Publikováno v:
Atmosphere-Ocean. 32:285-297
On the basis of two well‐known ozone‐weather relationships, an algorithm is proposed that estimates total ozone amounts using readily available meteorological information. The technique has been labelled METOZ from Meteorological Total Ozone. A r
Autor:
W.F.J. Evans, D.W. Tarasick
Publikováno v:
Advances in Space Research. 13:145-148
The state of knowledge of the Infrared Atmospheric and the Atmospheric emission band systems of molecular oxygen is reviewed. These emissions are present in the nightglow, the twilight, and the dayglow. The available observations are collected in a d
Autor:
W.F.J. Evans, H. Fast
Publikováno v:
Advances in Space Research. 10:71-75
The nitric acid mixing ratio at 25 km, close to the concentration peak of the nitric acid layer, has been measured with a balloon-borne spectro-radiometer from 1974 to 1987 over a complete solar cycle. The mixing ratio shows an 8% variation over this