A new spin on global warming.Although the makers of quartz watches would have you believe otherwise, even the most accurate timepiece won't precisely track the passing days. Because of tiny changes in Earth's rotational rate, day length can vary as much as one-thousandth of a second over a span of a few months. A group of researchers now reports calculations suggesting that such fluctuations may provide a means of monitoring long-term climate change, such as global greenhouse warming.
Richard S Ri·chard , Joseph Henri Maurice Known as "Rocket." 1921-2000.
Canadian hockey player. A right wing for the Montreal Canadiens (1942-1960), he led his team to eight Stanley Cup championships and was the first player to score 50 goals in a . Gross and his colleagues at the Jet Propulsion Laboratory “JPL” redirects here. For other uses, see JPL (disambiguation).
Jet Propulsion Laboratory (JPL) is a NASA research center located in the cities of Pasadena and La Cañada Flintridge, near Los Angeles, California, USA. in Pasadena, Calif., analyzed the seasonal changes in day length over the last 30 years. Whereas scientists think that rearrangements of matter inside the Earth cause longer-term shifts in rotational speed Rotational speed (sometimes called speed of revolution) indicates, for example, how fast a motor is running. Rotational speed is equivalent to angular speed, but with different units. Rotational speed tells how many complete rotations (i.e. , the seasonal changes are thought to occur because of variations in the strength of winds.
Gross and his colleagues found that the seasonal fluctuations in day length over the last three decades correlate with the Southern Oscillation southern oscillation
The atmospheric pressure conditions corresponding to the periodic warming of El Niño and cooling of La Niña.
southern oscillation Index- an atmospheric pressure atmospheric pressure
or barometric pressure
Force per unit area exerted by the air above the surface of the Earth. Standard sea-level pressure, by definition, equals 1 atmosphere (atm), or 29.92 in. (760 mm) of mercury, 14.70 lbs per square in., or 101. pattern in the Pacific associated with El Nino warming. This suggests that scientists can use the alterations in day length to monitor long-term changes in the atmosphere, particularly the strength of winds that blow around the globe, Gross says.