Sentences with phrase «cyclone activity over»

Carrasco, J.F., D.H. Bromwich, and Z. Liu, 1997: Mesoscale cyclone activity over Antarctica during 1991, Part 1: Marie Byrd Land.

Not exact matches

The greening of Sahara strengthens the West African Monsoon, which triggers a change in the atmospheric circulation over the entire tropics, affecting tropical cyclone activity.

Tracking changes in Arctic cyclone activity through time, Vavrus calculated a statistically significant, though minor, increase in extreme Arctic cyclone frequency over the study period, with increases strongest near the Aleutian Islands and Iceland.

The article, «Extreme rainfall activity in the Australian tropics reflects changes in the El Niño / Southern Oscillation over the last two millennia,» presents a precisely dated stalagmite record of cave flooding events that are tied to tropical cyclones, which include storms such as hurricanes and typhoons.

A tropical cyclone is the generic term for a non-frontal synoptic scale low - pressure system over tropical or sub-tropical waters with organized convection (i.e. thunderstorm activity) and definite cyclonic surface wind circulation (Holland 1993).

Part of the difficulty in identifying the human component, if any is, as the IPCC Summary itself notes, that tropical cyclone activity varies naturally over the decades.

When we examine the relationship between SST and intensity, we find that although SSTs contribute significantly to tropical cyclone activity, their influence varies markedly over time.

Adam G: You can not conclude that just from looking at a basin which has less than 15 % of the total global tropical cyclone activity, and also selecting groups of years that coincide exactly with the positive and negative Atlantic Multi-decadal Oscillation phases, which would dominate over any AGW trend in this basin if it exists.

«Consequently, tropical cyclone activity across the western Caribbean may remain essentially stable over the current century, which has important implications for water availability in this region.

They found that averaged sea surface temperatures over the MDR are the best predictor of Atlantic cyclone activity, followed by global average surface temperature, with MDR warming relative to the tropics being the worst predictor of hurricane activity (Figure 1).

A tropical cyclone is a low pressure system over tropical or sub-tropical waters, with convection (i.e. thunderstorm activity) and winds at low levels, circulating either anti-clockwise (in the northern hemisphere) or clockwise (in the southern hemisphere).

In contrast to strong sea surface temperature control on basin counts, unpredictable internal variability in track density is strong over the Gulf Coast and US East Coast - indicating that prediction of regional cyclone activity, especially landfall hurricanes, is challenging.