Sentences with phrase «natural circulation patterns»

Recent scientific studies increasingly question whether human activities have contributed to observed shifts in natural circulation patterns.

Now, this is suspicious, since Occam's Razor would tell us to assume the most obvious result, that urbanization puts upwards bias on temperature readings, rather than on natural circulation patterns that happen to coincide with urban areas.

He said that while it's possible human - driven global warming could have played a role in the region, the study's modeling efforts didn't convincingly replicate certain patterns and that he felt more confident that natural circulation patterns played a more likely role in pushing temperatures up across the region since 1900.

Thanks to the natural circulation pattern, that oxygen would then be carried deeper into the ocean interior, where it might still be detectable years later as it travels along its flow path.

Not exact matches

Researchers from the University of California Irvine have shown that a phenomenon known as the Atlantic Multidecadal Oscillation (AMO)-- a natural pattern of variation in North Atlantic sea surface temperatures that switches between a positive and negative phase every 60 - 70 years — can affect an atmospheric circulation pattern, known as the North Atlantic Oscillation (NAO), that influences the temperature and precipitation over the Northern Hemisphere in winter.

As discussed in the Climate chapter, large - scale atmospheric circulation patterns connected to changes in sea - surface temperatures strongly influence natural variations in precipitation and temperature (e.g., Cayan et al. 1999; Mantua and Hare 2002).

Variations in regional precipitation and temperature have long been determined to be strongly correlated with natural oceanic - atmospheric circulation patterns, or oscillations.

The first collection of papers establishes that (a) decadal and multi-decadal ocean circulation patterns (AMO, PDO, NAO, ENSO) have significantly modulated precipitation and temperature changes in recent decades, and the second collection of papers confirm that (b) natural ocean oscillations are, in turn, modulated by solar activity.

Natural factors contributing to past climate change are well documented and include changes in atmospheric chemistry, ocean circulation patterns, solar radiation intensity, snow and ice cover, Earth's orbital cycle around the sun, continental position, and volcanic eruptions.

-LSB-...] Variations in regional precipitation and temperature have long been determined to be strongly correlated with natural oceanic - atmospheric circulation patterns, or oscillations.

There is also a natural variability of the climate system (about a zero reference point) that produces El Nino and La Nina effects arising from changes in ocean circulation patterns that can make the global temperature increase or decrease, over and above the global warming due to CO2.

Expecting less than 5 % of Earths surface to filter the air mass from the other 95 % given actual air circulation patterns is patently absurd compared to natural CO2 scrubbing mechanisms like the biological carbon cycles, or Henry's law (which is leading to ocean acidification.

The effects on sea circulation patterns and weather are complex and difficult to tease out from natural variation, requiring long - term observation.

It appears we agree on the inability of the global models to simulate the natural variations on decadal and, presumably longer time scales, of large scale circulation patterns such as ENSO, the PDO, the NAO etc..

South America colliding with Central America was once the cause of vast changes to ocean circulation patterns, and a change in Earth's climate — but that «natural» explanation no longer applies in the 21st century.

The most natural type of long term variability is in my view based on slowly varying changes in ocean circulation, which doesn't necessarily involve major transfer of heat from one place to another but influences cloudiness and other large scale weather patterns and through that the net energy flux of the Earth system.

USCG Station Sandy Hook is situated within an East Coast hot spot of rising seas, where natural subsidence, low - lying topography, and changing ocean circulation patterns contribute to above - average sea level rise.

El Niño's center of action appears to be shifting from the eastern to the central Pacific, which in turn is affecting the distribution and frequency of weather events.7 However, due to the wide natural fluctuations within circulation patterns, it is difficult to attribute recent changes solely to human activity.

The problems we are working on range from basic studies of circulation patterns of water in the ocean and groundwater flow systems to the variability of the oceanic circulation under natural and anthropogenically forced conditions or the transport and transformation of contaminants.

Regional circulation patterns have significantly changed in recent years.2 For example, changes in the Arctic Oscillation can not be explained by natural variation and it has been suggested that they are broadly consistent with the expected influence of human - induced climate change.3 The signature of global warming has also been identified in recent changes in the Pacific Decadal Oscillation, a pattern of variability in sea surface temperatures in the northern Pacific Ocean.4

b) atmospheric and ocean circulation patterns since 1950 predominantly caused by natural processes.

These aspects of precipitation generally exhibit large natural variability, and El Niño and changes in atmospheric circulation patterns such as the North Atlantic Oscillation have a substantial influence.

In both the tropics and extratropics, it is difficult to discern significant long - term trends in the patterns of climate variability from natural variability, never mind abrupt (threshold) changes in the atmospheric circulation.

It is better to look at regional level pattern as they follow general circulation patterns in conjenction with natural in - built cyclic variations.

In addition, human - induced climate change may alter atmospheric circulation, dislocating historical patterns of natural variability and storminess.

Modes or patterns of climate variability - Natural variability of the climate system, in particular on seasonal and longer time scales, predominantly occurs with preferred spatial patterns and time scales, through the dynamical characteristics of the atmospheric circulation and through interactions with the land and ocean surfaces.

Perhaps taking the time to familiarize oneself with the atmospheric circulation patterns of the area will show that it is perfectly normal, natural and expected that those particles reach Antarctica through warm air advection pathways... Just look at a satellite animation.