February 28, 2007
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Published July 1988 through June 1999
FROM VOLUME 10, NUMBER 8, AUGUST 1997
GLOBAL WARMING DETECTION
"Darwin Sea Level Pressure, 1876-1996: Evidence for Climate Change?"
D.E. Harrison (Pacific Marine Environ. Lab., NOAA, 7600 Sand Point Way NE,
Seattle WA 98115; e-mail: firstname.lastname@example.org), N.K. Larkin,Geophys.
Res. Lett., 24(14), 1779-1782, July 15, 1997.
Trenberth and Hoar (1996) have argued that the period of prolonged ENSO
conditions between 1990 and 1995 is highly unlikely to be due to natural
variation, suggesting it may be related to increasing greenhouse gases.
This paper uses a different method to examine the same record of Darwin
sea level pressure anomaly used by Trenberth and Hoar, concluding instead
that the 1990-1995 activity may be an aspect of natural variability.
"Evidence for Human Influence on Climate from Hemispheric
Temperature Relations," R.K. Kaufmann, D.I. Stern, Nature,
388(6637), 39-44, July 3, 1997. (See Global Climate Change
Digest, Prof. Pubs./Of Gen. Interest, July 1997.)
"Clouds, Precipitation and Temperature Change," A. Dai
(Clim Analysis Sect., NCAR, POB 3000, Boulder CO 80307; e-mail:
email@example.com), A.D. Del Genio, I.Y. Fung, Nature, 386(6626),
665-666, Apr. 17, 1997.
Suggests that greenhouse gas-induced increases in thick precipitating
clouds and precipitation, rather than increasing aerosol concentrations,
are better candidates to explain the observed decrease in daily
"Recent Abnormal Changes in Wintertime Atmospheric Response to
Tropical SST Forcing," R. Kawamura (Natl. Res. Inst. for Earth Sci. &
Disaster Prevention, 3-1 Tennodai, Tsukuba, Ibaraki 305, Japan; e-mail:
firstname.lastname@example.org),Geophys. Res. Lett., 24(7),
783-786, Apr. 1, 1997.
Examines an ensemble of global model integrations over the period
1939-1993 forced by the same set of observed sea surface temperatures
(SSTs), which have been rising in some regions over the past few decades.
Results exhibit a change in the wintertime response of the extratropical
atmosphere to elevated SSTs over the past decade, which could be viewed as
a significant signature of global warming.
"Low-Frequency Oscillations in Temperature-Proxy Records and
Implications for Recent Climate Change," N. Mahasenan (Dept. Eng. &
Public Policy, Carnegie Mellon Univ., Pittsburgh PA 15213; e-mail:
email@example.com), R.G. Watts, H. Dowlatabadi,Geophys. Res. Lett.,
24(5), 563-566, Mar. 1, 1997.
Singular spectral analysis of several long-term proxy records of
temperature indicates significant variability on the century time scale,
even when the portion of records after 1900 are excluded to remove any
major anthropogenic influence. Findings suggest that attribution of
anthropogenic climate change may be more difficult than currently
"Integrated Assessment of Global Warming," K.O. Ott (Sch.
Nuclear Eng., Purdue Univ. W. Lafayette IN 47907),World Resource
Review, 9(1), 69-85, Mar. 1997.
Combines information on global warming from several historical data
records to draw conclusions that could not be obtained from the analysis
of the individual records alone. Based on sea surface temperatures
observed since the 1850s, on borehole temperatures, and on the retreat of
mountain glaciers, concludes that the warming trend following the Little
Ice Age was initially a natural fluctuation, but more recent warming is
best explained by the effect of greenhouse gases. The primary evidence for
this interpretation is the dominance of retreating over advancing glaciers
in this century.
"The Suitability of Montane Ecotones as Indicators of Global Climatic
Change," J.A. Kupfer, D.M. Cairns,Prog. Phys. Geog., 20(3),
253-272, Sep. 1996. (See Global Climate Change Digest, Prof.
Pubs./mpacts/Forests & Ecosystems, May 1997.)
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