Regional North Pacific forcing is predominant
in sea surface temperature variations throughout most of the CCS, while remote tropical forcing related to ENSO is more important in the far southern portion, off the west coast of Baja California.
Not exact matches
Using different calibration and filtering processes, the two researchers succeeded
in combining a wide variety of available data from
temperature measurements and climate archives
in such a way that they were able to compare the reconstructed
sea surface temperature variations at different locations around the globe on different time scales over a period of 7,000 years.
While natural climate
variations like El Niño do affect the frequency and severity of heat waves from one year to the next, the study suggests the increases are mainly linked to long - term changes
in sea surface temperatures.
Some scientists believe that as they meander around the world, their activities can be better weather predictors than
variations in sea surface temperatures.
Of course, while short - term changes
in sea level can be predicted fairly accurately based on the motions of the moon and sun, it is a lot harder predicting the ups and downs of the average global
surface temperature — there is a lot of noise, or natural
variation,
in the system.
The extreme cold weather observed across Europe and the east coast of the US
in recent winters could be partly down to natural, long - term
variations in sea surface temperatures, according to a new study published today.
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.
The team used a worldwide climate model that incorporated normal month - to - month
variations in sea surface temperatures and
sea ice coverage, among other climate factors, to simulate 12,000 years» worth of weather.
Chris Folland and colleagues at the British Meteorological Office's Hadley Centre for Climate Prediction and Research
in Berkshire have studied
variations in sea -
surface temperature in this region.
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).
Long - term (decadal and multi-decadal)
variation in total annual streamflow is largely influenced by quasi-cyclic changes
in sea -
surface temperatures and resulting climate conditions; the influence of climate warming on these patterns is uncertain.
Drought
variations in the study area significantly correlated with
sea surface temperatures (SSTs)
in North Pacific Ocean, suggesting a possible connection of regional hydroclimatic
variations to the Pacific Decadal Oscillation (PDO).
Suggested mechanisms range from upwelling of warm deep waters onto the continental shelf
in response to
variations in the westerly winds, to an influence of El Niño — Southern Oscillation on
sea surface temperatures.
But it does say; «Natural climate
variations, which tend to involve localized changes
in sea surface temperature, may have a larger effect on hurricane activity than the more uniform patterns of global warming...»
The seasonal
variation in the earth's global average
sea surface temperature is only about 0.5 degrees Kelvin, being hotter
in April and colder
in October (see e.g. http://discover.itsc.uah.edu/amsutemps/execute.csh?amsutemps).
Surface warming / ocean warming: «A reassessment of temperature variations and trends from global reanalyses and monthly surface climatological datasets» «Estimating changes in global temperature since the pre-industrial period» «Possible artifacts of data biases in the recent global surface warming hiatus» «Assessing the impact of satellite - based observations in sea surface temperature trends
Surface warming / ocean warming: «A reassessment of
temperature variations and trends from global reanalyses and monthly
surface climatological datasets» «Estimating changes in global temperature since the pre-industrial period» «Possible artifacts of data biases in the recent global surface warming hiatus» «Assessing the impact of satellite - based observations in sea surface temperature trends
surface climatological datasets» «Estimating changes
in global
temperature since the pre-industrial period» «Possible artifacts of data biases
in the recent global
surface warming hiatus» «Assessing the impact of satellite - based observations in sea surface temperature trends
surface warming hiatus» «Assessing the impact of satellite - based observations
in sea surface temperature trends
surface temperature trends»
The observation, which connects Arctic stratospheric ozone and
variation in winds and
sea -
surface temperatures in the tropics, could help forecasters better understand what's going on.
Previous studies have found it to be well correlated with the low - frequency
variations in the North Atlantic
sea surface temperature associated with the Atlantic multidecadal variability (AMV).
More Scientific Evidence For CO2's Dubious Climate Impact Emerges Image Source: Robertson and Chilingar, 2017 According to the most basic precepts of anthropogenic global warming (AGW),
variations in CO2 concentrations exert significant control on
sea surface temperatures, glaciers,
sea levels, and generalized climate dynamics (i.e., precipitation patterns).
El Ni o an irregular
variation of ocean current that, from January to February, flows off the west coast of South America, carrying warm, low - salinity, nutrient - poor water to the south; does not usually extend farther than a few degrees south of the Equator, but occasionally it does penetrate beyond 12 S, displacing the relatively cold Peruvian current; usually short - lived effects, but sometimes last more than a year, raising
sea -
surface temperatures along the coast of Peru and
in the equatorial eastern Pacific Ocean, having disastrous effects on marine life and fishing
southern oscillation a large - scale atmospheric and hydrospheric fluctuation centered
in the equatorial Pacific Ocean; exhibits a nearly annual pressure anomaly, alternatively high over the Indian Ocean and high over the South Pacific; its period is slightly variable, averaging 2.33 years; the
variation in pressure is accompanied by
variations in wind strengths, ocean currents,
sea -
surface temperatures, and precipitation
in the surrounding areas
It is most prominent
in the North Pacific, where fluctuations
in the strength of the winter Aleutian Low pressure system co-vary with North Pacific
sea surface temperatures, and are linked to decadal
variations in atmospheric circulation,
sea surface temperatures and ocean circulation throughout the whole Pacific Basin.
Burgmann et al (2008) discuss this
in terms of a Pacific Decadal
Variation (PDV)-- and describe the
sea surface temperature signature as «characterized by a broad triangular pattern
in the tropical Pacific surrounded by opposite anomalies
in the midlatitudes of the central and western Pacific Basin.»
That is, the animation of the GISS maps and the data GISS provides with those maps show that the trends
in global
sea surface temperature are driven by the multidecadal
variations in the strengths and magnitudes of El Niño and La Niña events.
They have a significant effect on water salinity, pollution, carbon and nutrient levels,
sea surface temperature, and other physical properties
in these regions of the ocean, and the
variations they cause can,
in turn, affect the well - being of marine ecosystems and climate.
By examining the spatial pattern of both types of climate
variation, the scientists found that the anthropogenic global warming signal was relatively spatially uniform over the tropical oceans and thus would not have a large effect on the atmospheric circulation, whereas the PDO shift
in the 1990s consisted of warming
in the tropical west Pacific and cooling
in the subtropical and east tropical Pacific, which would enhance the existing
sea surface temperature difference and thus intensify the circulation.
In addition, the pattern of sea surface temperatures at low latitudes is extremely important for regional climate variations (shown, for example, by the increased likelihood of heavy winter rainfall in California when the eastern tropical Pacific warms in El Niño events
In addition, the pattern of
sea surface temperatures at low latitudes is extremely important for regional climate
variations (shown, for example, by the increased likelihood of heavy winter rainfall
in California when the eastern tropical Pacific warms in El Niño events
in California when the eastern tropical Pacific warms
in El Niño events
in El Niño events).
Therefore, are you sure you weren't seeing weather - caused
variations in sea surface temperatures and mistook that for southward migration against the flow?
Even while identifying some of the observed change
in climatic behaviour, such as a 0.4 C increase
in surface temperature over the past century, or about 1 mm per year
sea level rise
in Northern Indian Ocean, or wider
variation in rainfall patterns, the document notes that no firm link between the do...
That suggests that the 1940s tropical warming could have started the changes
in the Amundsen
Sea ice shelves that are being observed now... He emphasized that natural variations in tropical sea - surface temperatures associated with the El Niño Southern Oscillation play a significant role.&raq
Sea ice shelves that are being observed now... He emphasized that natural
variations in tropical
sea - surface temperatures associated with the El Niño Southern Oscillation play a significant role.&raq
sea -
surface temperatures associated with the El Niño Southern Oscillation play a significant role.»
Decadal
variations in the North Pacific Gyre Oscillation are characterized by a pattern of
sea surface temperature anomalies that resemble the central Pacific El Niño, a dominant mode of interannual variability with far - reaching effects on global climate patterns5, 6, 7.
I hypothesise that natural
variations can account for the vast majority of the warming seen within the bounds of certainty
in the
surface and
sea temperature records
in the industrial era.
It's a mode of natural
variation in the tropical eastern Pacific ocean which is indicated by
sea surface temperature in that region, as well as patterns of atmospheric pressure,
surface winds over the ocean, even precipitation over a much larger region.
The new atlas could also improve understanding of climate phenomena like the Atlantic Multi-decadal Oscillation, a
variation in North Atlantic
sea -
surface temperatures that hasn't been tracked long enough to tell if it is a transitory event, forced by human intervention
in the climate system, or a natural long - term oscillation.
Kushnir, Y., 1994: Interdecadal
variations in North Atlantic
sea surface temperature and associated atmospheric conditions.
The decadal
variations of the AMOC obtained
in that way are shown to precede the observed decadal
variations in basin - wide North Atlantic
sea surface temperature (SST), known as the Atlantic Multidecadal Oscillation (AMO) which strongly impacts societally important quantities such as Atlantic hurricane activity and Sahel rainfall.
Random
variations in sea surface temperature are caused by random
variations in cloudiness, which are caused by who - knows - what.)
Change
in cloud coverage was the primary cause of
sea surface temperature variations, and clouds provided a positive feedback to
temperature variations.
«The Pacific Decadal Oscillation is a climate index based upon patterns of
variation in sea surface temperature of the North Pacific from 1900 to the present (Mantua et al. 1997).
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
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.
Changing global
temperatures induce air circulation changes as the air seeks to restore the
sea surface /
surface air
temperature equilibrium and at the same time resolve ocean induced
variations in the sun to
sea / air to space equilibrium.
These frequency changes are consistent with other paleoclimate indicators from the tropical North Atlantic,
in particular,
sea surface temperature variations.
«Although long considered implausible, there is growing promise for probabilistic climatic forecasts one or two decades into the future based on quasiperiodic
variations in sea surface temperatures (SSTs), salinities, and dynamic ocean topographies.
Warming of
sea surface temperatures and alteration of ocean chemistry associated with anthropogenic increases
in atmospheric carbon dioxide will have profound consequences for a broad range of species, but the potential for seasonal
variation to modify species and ecosystem responses to these stressors has received little attention.
Microwave imagery must allow for
variations in surface emissivity and can not act as a surrogate for air
temperature over either snow - covered (Peterson et al., 2000) or
sea - ice areas.
The ENSO cycle refers to the coherent and sometimes very strong year - to - year
variations in sea -
surface temperatures, convective rainfall,
surface air pressure, and atmospheric circulation that occur across the equatorial Pacific Ocean.
Variations in SST due to variations in heat transport by ocean currents or diffusion into the thermocline are neglected while contributions by changes in evaporation, turbulent transfer, and surface radiation are estimated as being proportional to the anomalous air - sea temperature d
Variations in SST due to
variations in heat transport by ocean currents or diffusion into the thermocline are neglected while contributions by changes in evaporation, turbulent transfer, and surface radiation are estimated as being proportional to the anomalous air - sea temperature d
variations in heat transport by ocean currents or diffusion into the thermocline are neglected while contributions by changes
in evaporation, turbulent transfer, and
surface radiation are estimated as being proportional to the anomalous air -
sea temperature difference.
In today's post, I'll report on a new (relatively) high - resolution series from the Arabian Sea offshore Pakistan (Boll et al 2014, Late Holocene primary productivity and sea surface temperature variations in the northeastern Arabian Sea: implications -LSB-..
In today's post, I'll report on a new (relatively) high - resolution series from the Arabian
Sea offshore Pakistan (Boll et al 2014, Late Holocene primary productivity and sea surface temperature variations in the northeastern Arabian Sea: implications -LSB-.
Sea offshore Pakistan (Boll et al 2014, Late Holocene primary productivity and
sea surface temperature variations in the northeastern Arabian Sea: implications -LSB-.
sea surface temperature variations in the northeastern Arabian Sea: implications -LSB-..
in the northeastern Arabian
Sea: implications -LSB-.
Sea: implications -LSB-...]
2) The
variation in the oceans» ability to absorb the CO2, which decreases with increasing
sea surface temperature.