Earth Sciences

Earth Sciences (also referred to as Geosciences), which deals with basic issues surrounding our planet, plays a vital role in the area of energy and raw materials supply.

Earth Sciences comprises subjects such as geology, geography, geological informatics, paleontology, mineralogy, petrography, crystallography, geophysics, geodesy, glaciology, cartography, photogrammetry, meteorology and seismology, early-warning systems, earthquake research and polar research.

Melt down

Half a century of thinning ice leaves Greenland’s future looking wet.

There is new evidence that the Greenland ice pack is in retreat. The finding may be a foretaste of still more rapid melting, and in turn, rising sea levels.

The ice sheet over northwest Greenland has thinned by 10-15 cm a year over the past 40 years, two scientists calculate 1 . The trend indicates “a significant long-term thinning”, says one, Niels Reeh, of the Technical University of

Floods forecast for Bangladesh

With a weather monitoring network a new model could predict coastal floods in Bangladesh. A new model should help forecast the massive floods to which the northern coast of Bangladesh is prone 1 . In principle, the model can predict the heights and arrival times of the huge waves that cyclones cause, and so could improve the planning of sea defences. The effectiveness of the model will depend on the availability of accurate, timely and detailed meteorological data, ca

Storms lower ozone levels

Ozone miniholes over the North Atlantic follow the unsteady pulse of climate fluctuations.

Recurring fluctuations in the North Atlantic climate are punching miniholes in the ozone layer, exposing Scandinavia and northern Europe to higher levels of ultraviolet radiation than normal, say two climatologists.

Seesawing air pressure over Greenland and the subtropical north Atlantic Ocean stirs the atmosphere and wafts ozone-depleted air towards populated high-latitude regions in

Warm favourite

The smart money is on global warming.

An Alaskan sweepstake has become a record of global warming. The competition to predict when ice will melt reveals that, on average, the thaw comes more than five days earlier now than it did 84 years ago 1 .

In the winter of 1917, railway engineers working in Nenana, Alaska whiled away the long winter nights by erecting a wooden tripod on the frozen Tenana River and placing bets on the exact moment in spring when it would

And now December’s weather

Meterologists look up for long-range forecasts.

Looking high into the atmosphere now might tell us whether we’re in for a white Christmas. Unusual stratospheric conditions herald changes in winter weather in the Northern Hemisphere up to two months later, say US researchers 1 .

The finding won’t let your weather forecaster warn you to wrap up warm two months hence, but it may be a valuable addition to meteorologists’ toolkits. “The effect works on average, bu

1 732 733 734