Inevitably the devastating tornadoes that killed more than 300 people in the US prompted Newsweek to ask: “Is global warming responsible for wild weather?” The answer, it found, is “yes”.Now you might want to give Newsweek a bye for this flip-flop, after all it was just sold to Tina Brown for the over-priced cost of $1. With a new owner, you expect some editorial positions to change.
Another Newsweek article cited “the most devastating outbreak of tornadoes ever recorded”, killing “more than 300 people”, as among “the ominous signs that the Earth’s weather patterns have begun to change dramatically”. But that article was published on April 28, 1975, when Newsweek listed the US tornado disaster of 1974 as one of the harbingers of disastrous global cooling, heralding the approach of a new ice age.
But on the other side of NY City, lives the dean of newsweeklies, Time who has has been owned by the same company since it began publishing almost 90 years ago.
In a story about the coming ice age on June 24, 1974 the magazine reported:
Scientists have found other indications of global cooling. For one thing there has been a noticeable expansion of the great belt of dry, high-altitude polar winds — the so-called circumpolar vortex—that sweep from west to east around the top and bottom of the world. Indeed it is the widening of this cap of cold air that is the immediate cause of Africa's drought. By blocking moisture-bearing equatorial winds and preventing them from bringing rainfall to the parched sub-Sahara region, as well as other drought-ridden areas stretching all the way from Central America to the Middle East and India, the polar winds have in effect caused the Sahara and other deserts to reach farther to the south. Paradoxically, the same vortex has created quite different weather quirks in the U.S. and other temperate zones. As the winds swirl around the globe, their southerly portions undulate like the bottom of a skirt. Cold air is pulled down across the Western U.S. and warm air is swept up to the Northeast. The collision of air masses of widely differing temperatures and humidity can create violent storms—the Midwest's recent rash of disastrous tornadoes, for example. (H/T Real Science)An April 28th Time article went back and forth on the association between the recent streak of tornadoes until it concluded with by making the global warming claim subtly:
It's very likely that a warmer world will see more severe weather, and certainly a more populated world will mean more people at risk from those events. That just increases the need to invest in disaster preparation and response—with vital agencies like the National Weather Service and NOAA—facing drastic budget cuts. In the wake of a black day for Americans in the South, that's simply idiotic.
2 comments:
Beautifully stated!
How long ago were those pop science articles published? Must be about 38 years ago. At that time, 10 times the papers were about global warming due to increasing CO2 than global cooling due to particulates and aerosols. A seminal study was published in that decade, which stated that much more research would be required before any projection could be made about global warming, and if it should be a serious concern.
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