Sentences with phrase «intense storm numbers»

Not exact matches

Each December, six months before the start of hurricane season, the now 75 - year - old Gray and his team issue a long - range prediction of the number of major tropical storms that will arise in the Atlantic Ocean basin, as well as the number of hurricanes (with sustained winds of 74 miles per hour or more) and intense hurricanes (with winds of at least 111 mph).

Haiyan fed off that, and there have been a greater number of intense storms recently as well.

Model studies have shown that higher temperatures do result in the most intense storms being more severe but conclusions have been mixed on storm number.

While theoretical and model experiments show warmer seas drive more intense storms in the future, the total number isn't expected to increase.

However, Emanuel (2005a) and Webster et al. (2005, 2006) indicated that the typhoons have become more intense in this region, with almost a doubling of PDI values since the 1950s and an increase of about 30 % in the number of category 4 and 5 storms from 1990 to 2004 compared with 1975 to 1989.

A number of modelling studies have also projected a general tendency for more intense but fewer storms outside the tropics, with a tendency towards more extreme wind events and higher ocean waves in several regions in association with those deepened cyclones.

Named Storms = Tropical Storms, Hurricanes and Subtropical Storms Hurricanes = Saffir - Simpson Hurricane Scale 1 to 5 Major Hurricanes = Saffir - Simpson Hurricane Scale 3, 4, or 5 «ACE» = Accumulated Cyclone Energy - An index that combines the numbers of systems, how long they existed and how intense they became.

As noted above, there is some indication from high resolution models of substantial increases in the numbers of the most intense hurricanes even if the overall number of tropical storms or hurricanes decreases.

Hurricanes in some areas, including the North Atlantic, are likely to become more intense as a result of global warming even though the number of such storms worldwide may decline, according to a new study by MIT researchers.

Key findings from these experiments include: fewer tropical cyclones globally in a warmer late - twenty - first - century climate (Figure 8), but also an increase in average cyclone intensity, the number and occurrence days of very intense category 4 and 5 storms in most basins (Figure 9) and in tropical cyclone precipitation rates (Figure 10).

The Summit invited guests to attend a number of hands - on events, including the «brain factory» where participants were placed in multi-disciplinary teams over the weekend for an intense brain - storming / devise / reflect - a-thon with mentors and designers onsite.