Sentences with phrase «influence cyclone activity»

Despite previous studies indicating that intraseasonal oscillations in the northeastern Pacific Ocean can significantly influence cyclone activity in the western Caribbean Sea and the Gulf of Mexico, dynamic models have so far been unable to accurately reproduce this relationship.

Not exact matches

Methods: While a few studies in the past investigated the influence of climate phenomena such as the El Niño Southern Oscillation and the Madden - Julian Oscillation on the inter-annual variability of tropical cyclones in the post-monsoon Bay of Bengal, changes in long - term cyclone activity are less well understood.

Since the climate response to the North Atlantic SST anomalies is primarily forced at the low latitudes and the AWP is in the path of or a birthplace for Atlantic tropical cyclones, the influence of the AMO on Atlantic tropical cyclone activity may operate through the mechanism of the AWP - induced atmospheric changes.

While it is «likely» that anthropogenic influences are behind the changes in cold days and warm days, there is only «medium confidence» that they are behind changes in extreme rainfall events, and «low confidence» in attributing any changes in tropical cyclone activity to greenhouse gas emissions or anything else humanity has done.

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.

The uncertainties in the historical tropical cyclone records, the incomplete understanding of the physical mechanisms linking tropical cyclone metrics to climate change, and the degree of tropical cyclone variability provide only low confidence for the attribution of any detectable changes in tropical cyclone activity to anthropogenic influences.

Influence of Pacific Decadal Oscillation on the relationship between ENSO and tropical cyclone activity in the Bay of Bengal during October — December The relationship between ENSO and tropical cyclones (TCs) activity in the Bay of Bengal (BoB) during October — December under cold (1950 — 1974) and warm (1975 — 2006) phase of Pacific Decadal Oscillation (PDO) is investigated.

The main modulating influence on tropical cyclone activity in the western North Pacific appears to be the changes in atmospheric circulation associated with ENSO, rather than local SSTs (Liu and Chan, 2003; Chan and Liu, 2004).

However, a detectable and perhaps substantial anthropogenic influence on Atlantic tropical cyclone activity can not be ruled out in the future.

This eastward moving pulse of anomalous variations in rainfall, wind, sea surface temperatures, and clouds in the tropics typically recurs every 30 — 60 days, creating a pattern that profoundly influences global weather and climate systems, including monsoons, tropical cyclone activity, and El Niño — Southern Oscillation events.

The National Oceanic and Atmospheric Administration's newest High Resolution Atmospheric Model captures the influence of intraseasonal oscillations on tropical cyclone activity.

However, to gain insight on the influence of climate change on Atlantic tropical storm and hurricane frequency, we must focus on longer (> 100 yr) records of Atlantic hurricane activity since very strong year - to - year and decade - to - decade variability appears in records of Atlantic tropical cyclones.