Patterns of sea-surface warming and cooling in the tropical Pacific seem to be changing, as do the associated atmospheric effects. Increased global warming is implicated in these shifts in El Ni

More than half a dozen oceanographic buoys are missing in action in the eastern Pacific Ocean. The US National Oceanic and Atmospheric Administration (NOAA) has dispatched a ship to fix the malfunctioning buoys, which are part of the 55-strong Tropical Atmosphere Ocean (TAO) array that monitors the ocean and
atmosphere.

A distinctly different type of El Ni

A huge outback dust storm swept eastern Australia and blanketed Sydney on Wednesday, disrupting transport, forcing people indoors and stripping thousands of tonnes of valuable farmland topsoil.

The dust blacked out the outback town of Broken Hill on Tuesday, forcing a zinc mine to shut down, and swept 1,167 km (725 miles) east to shroud Sydney in a red glow on Wednesday.

A dust storm swept across eastern Australia and blanketed Sydney on Wednesday, disrupting transport, placing health authorities on alert for widespread respiratory illness and stripping thousands of tonnes of topsoil off Australia's main farmlands.

Following are answers to questions about the storm.

WHAT CAUSED THE DUST STORM?

Vinson Kurian

Thiruvananthapuram, Sept. 15 Research conducted at Texas A&M University has sought to link the 1918 El Nino, among the strongest in history, and the flu pandemic that year.

The El Nino of 1918 coincided with one of the worst droughts in India, according to Prof Benjamin Giese, lead author of the research report.

Temperature reconstructions for the surface of the Northern Hemisphere are based largely on terrestrial records from extra-tropical or high-elevation sites, despite the fact that global average surface temperature changes closely follow those of the global tropics, which are 75 per cent ocean.

Indonesia appeared to bat away offers from other Southeast Asian countries to help stop haze pollution on Wednesday, leaving the region facing worsening skies as a result of a brewing El Nino weather pattern.

Kaustubh Kulkarni / Pune August 19, 2009, 1:08 IST

When the World Metereological Organisation (WTO) warned our weather experts in June that a poor monsoon was coming , and also told them why, the latter wouldn

Atlantic tropical cyclone activity, as measured by annual storm counts, reached anomalous levels over the past decade. The short nature of the historical record and potential issues with its reliability in earlier decades, however, has prompted an ongoing debate regarding the reality and significance of the recent rise.

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