February 28, 2007
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A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999
FROM VOLUME 7, NUMBER 6, JUNE 1994
PROFESSIONAL PUBLICATIONS... OF GENERAL INTEREST: TREND ANALYSES
Ultraviolet-B Radiation: Is There a Trend?" Comment by P.J.
Michaels (Dept. Environ. Sci., Univ. Virginia, Charlottesville VA
22903), S.F. Singer, P.C. Knappenberger; and reply by J.B. Kerr
(Atmos. Environ. Serv., 4905 Dufferin St., Downsview ON M3H 5T4,
Can.), C.T. McElroy, Science, 264(5163), 1341-1343,
May 27, 1994.
Michaels et al. perform a statistical analysis of the
observations of UV-B published last November by Kerr and McElroy
(GCCD, p. 2, Nov. 1993), concluding that the upward trend
they found from 1989 to 1993 is an artifact of the analysis. Kerr
and McElroy respond here with criticism of the approach of
Michaels et al., reaffirming that their data shows evidence of
increasing UV-B associated with the documented decline in ozone
Warming in Global Temperature Series," P.D. Jones (Clim.
Res. Unit, Univ. E. Anglia, Norwich NR4 7TJ, UK), Geophys.
Res. Lett., 21(12), 1149-1152, June 15, 1994.
Compares estimates of global temperature trends over the
period 1979-1993 by comparing data from three sources: surface
measurements, radiosonde measurements of the lower atmosphere,
and satellite observations. The three records show marked
differences, which can be explained by the short record length
and the transitory nature of volcanic and El Niño/Southern
Oscillation effects. Correction for these effects yields a
temperature rise of about 0.1°C per decade since 1958. This
relatively small trend compared to current modeling expectations
of an enhanced greenhouse effect may reflect the offsetting
influences of natural variations and cooling by sulfate aerosols.
U.S. Streamflow Linked to Greenhouse Forcing," H.F. Lins
(U.S. Geol. Survey, Reston, Va.), P.J. Michaels, Eos, 75(25),
281, 284-285, June 21, 1994.
Analysis of climate-sensitive streamflow data recently
collected by the USGS shows increasing trends in monthly
streamflow during the past five decades across most of the
conterminous U.S. This result supports the hypothesis that
enhanced greenhouse forcing produces an enhanced hydrologic
cycle, at least during autumn and winter months.
and Environmental Change at High Northern Latitudes," L.
Kullman (Dept. Phys. Geog., Umeå Univ., S-901 87 Umeå, Swed.), Progr.
Phys. Geog., 18(1), 124-135, 1994.
A selective review of research developments over the past year
undertaken to evalute topical environmental issues of public and
scientific concern against established facts. Examines the
cryosphere and vegetation and finds no evidence of predicted
impacts of an enhanced greenhouse effect. The scientific basis
for costly global regulations to influence climate is virtually
Effects on Mountain Plants," G. Grabherr (Dept. Vegetation
Ecol., Univ. Vienna, POB 285, A1091 Vienna, Austria), M.
Gottfried, H. Pauli, Nature, 369(6480), 448, June
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