Ho added that the enhanced intensification of tropical cyclones over East Asian coastal seas caused
by changes in sea surface temperature and wind flows mean that «an individual tropical cyclone could strike East Asia, including the Philippines, with a record - breaking power, for example Haiyan, even though landfall intensity in south - east Asia has not notably changed on average in recent years because of the shifted genesis location; note that Haiyan formed over the eastern Philippine Sea far from land.»
Scientists think this reversal in strength was driven
by changes in sea surface temperature and upper - ocean ventilation.
Scientists think this reversal in strength was driven
by changes in sea surface temperature and upper - ocean ventilation.
Not exact matches
Beyond human activity, tropical
sea surface temperatures further back
in time are affected
by volcanic eruptions,
changes in the intensity of sunlight and natural events like El Niño.
But the ice core - derived climate records from the Andes are also impacted from the west — specifically
by El Niño, a temporary
change in climate, which is driven
by sea surface temperatures in the tropical Pacific.
The underlying pattern
in this year's fire forecast is driven
by the fact that the western Amazon is more heavily influence
by sea surface temperatures in the tropical Atlantic, and the eastern Amazon's fire severity risk correlates to
sea surface temperature changes in the tropical Pacific Ocean.
Here, we report on local and global
changes in MHW characteristics over time as recorded
by satellite and
in situ measurements of
sea surface temperature (SST) and defined using a quantitative MHW framework, which allows for comparisons across regions and events1.
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.
By plotting the anomaly
temperatures, scientists can obtain a precise idea of the intensity of
change in sea -
surface temperatures.
They wrote that their comparisons of
sea - level pressures,
sea -
surface temperatures and land - based air
temperatures provided «consistent evidence for strong» regulation of
temperatures by changes in ocean cycles «from monthly to century time scales.»
For significant periods of time, the reconstructed large - scale
changes in the North Pacific SLP field described here and
by construction the long - term decline
in Hawaiian winter rainfall are broadly consistent with long - term
changes in tropical Pacific
sea surface temperature (SST) based on ENSO reconstructions documented
in several other studies, particularly over the last two centuries.
Thousands of studies conducted
by researchers around the world have documented
changes in surface, atmospheric, and oceanic
temperatures; melting glaciers; diminishing snow cover; shrinking
sea ice; rising
sea levels; ocean acidification; and increasing atmospheric water vapor.
Sea surface temperature change after doubling of atmospheric CO2 concentration
in a scenario where CO2 increases
by 1 % every year.
In contrast to historical droughts, future drying is not linked to any particular pattern of change in sea surface temperature but seems to be the result of an overall surface warming driven by rising greenhouse gase
In contrast to historical droughts, future drying is not linked to any particular pattern of
change in sea surface temperature but seems to be the result of an overall surface warming driven by rising greenhouse gase
in sea surface temperature but seems to be the result of an overall
surface warming driven
by rising greenhouse gases.
Threats to the auklet include introduced carnivores (particularly
in Alaska), oil spills, and
changes in sea surface temperature (caused
by El Niño events).
And of course the new paper
by Hausfather et al, that made quite a bit of news recently, documents how meticulously scientists work to eliminate bias
in sea surface temperature data,
in this case arising from a
changing proportion of ship versus buoy observations.
Re 9 wili — I know of a paper suggesting, as I recall, that enhanced «backradiation» (downward radiation reaching the
surface emitted
by the air / clouds) contributed more to Arctic amplification specifically
in the cold part of the year (just to be clear, backradiation should generally increase with any warming (aside from greenhouse feedbacks) and more so with a warming due to an increase
in the greenhouse effect (including feedbacks like water vapor and, if positive, clouds, though regional
changes in water vapor and clouds can go against the global trend); otherwise it was always my understanding that the albedo feedback was key (while
sea ice decreases so far have been more a summer phenomenon (when it would be warmer to begin with), the heat capacity of the
sea prevents much
temperature response, but there is a greater build up of heat from the albedo feedback, and this is released
in the cold part of the year when ice forms later or would have formed or would have been thicker; the seasonal effect of reduced winter snow cover decreasing at those latitudes which still recieve sunlight
in the winter would not be so delayed).
In a study published in the journal Nature the researchers say analysis of sea surface temperature data shows that the AMOC has slowed down by roughly 15 % since the middle of the 20th century, with human - made climate change a prime suspec
In a study published
in the journal Nature the researchers say analysis of sea surface temperature data shows that the AMOC has slowed down by roughly 15 % since the middle of the 20th century, with human - made climate change a prime suspec
in the journal Nature the researchers say analysis of
sea surface temperature data shows that the AMOC has slowed down
by roughly 15 % since the middle of the 20th century, with human - made climate
change a prime suspect.
In 2014 climate scientists published a peer - reviewed paper (Johnstone 2014) suggesting that climate change along the coast of North America could be best explained by natural cycles of Pacific Decadal Oscillation (PDO) due to its affects on sea surface temperatures in the eastern Pacifi
In 2014 climate scientists published a peer - reviewed paper (Johnstone 2014) suggesting that climate
change along the coast of North America could be best explained
by natural cycles of Pacific Decadal Oscillation (PDO) due to its affects on
sea surface temperatures in the eastern Pacifi
in the eastern Pacific.
They describe abnormally warm or cool
sea surface temperatures in the South Pacific that are caused
by changing ocean currents.
For the ENSO indicators that use an updating baseline
by which to compute
sea surface temperature anomalies, it would be tough to see
changes one way or the other (at least
in the indicator).
The rains, at least meteorologically speaking, were not unexpected; the combination of slow - moving, low - pressure tropical air mass fed
by high
sea surface temperatures, and record humidity —
in addition to the unpredictability of climate
change — make catastrophic floods more likely.
Here we show that accounting for recent cooling
in the eastern equatorial Pacific reconciles climate simulations and observations.We present a novel method of uncovering mechanisms for global
temperature change by prescribing,
in addition to radiative forcing, the observed history of
sea surface temperature over the central to eastern tropical Pacific
in a climate model.
This extended drought is linked with the
changes in the
sea surface temperature of the Pacific Ocean, according to a study led
by University of California Los Angeles (UCLA) professor Glen MacDonald.
The
changes in sea -
surface temperatures are consistent with the impact of the annular modes on the
surface fluxes of latent and sensible heat, and also on the flux of heat
by the anomalous Ekman flow.
There has been an overall warming of
surface waters (
in the Bellingshausen and Scotia
seas)
by ∼ 1 °C
in the last 50 years, but so far there is no evidence of any biologically meaningful
temperature change in waters below about 100 m deep.
Changes in sea - surface temperatures (SSTs) also have an effect by bringing about associated changes in atmospheric circulation and precipi
Changes in sea -
surface temperatures (SSTs) also have an effect
by bringing about associated
changes in atmospheric circulation and precipi
changes in atmospheric circulation and precipitation.
«The authors write that «the notorious tropical bias problem
in climate simulations of global coupled general circulation models manifests itself particularly strongly
in the tropical Atlantic,»... they state that «the climate bias problem is still so severe that one of the most basic features of the equatorial Atlantic Ocean — the eastward shoaling thermocline — can not be reproduced
by most of the IPCC assessment report models,... as they describe it, «show that the bias
in the eastern equatorial Atlantic has a major effect on
sea -
surface temperature (SST) response to a rapid
change in the Atlantic Meridional Overturning Circulation (AMOC).»
They wrote that their comparisons of
sea - level pressures,
sea -
surface temperatures and land - based air
temperatures provided «consistent evidence for strong» regulation of
temperatures by changes in ocean cycles «from monthly to century time scales.»
Importantly, the
changes in cereal yield projected for the 2020s and 2080s are driven
by GHG - induced climate
change and likely do not fully capture interannual precipitation variability which can result
in large yield reductions during dry periods, as the IPCC (Christensen et al., 2007) states: ``... there is less confidence
in the ability of the AOGCMs (atmosphere - ocean general circulation models) to generate interannual variability
in the SSTs (
sea surface temperatures) of the type known to affect African rainfall, as evidenced
by the fact that very few AOGCMs produce droughts comparable
in magnitude to the Sahel droughts of the 1970s and 1980s.»
2) If minor
changes in the air attempt to make the air
temperature alone diverge from that equilibrium then the weather systems
change to modify the energy flow and
in due course restore the
surface air
temperature to match the
sea surface temperature set
by the oceans.
The air responds to a
change in it's own resistor efficiency
by changing it's own circulation patterns to again meet the requirement that the
surface air
temperature and the
sea surface temperature be the same on average globally.
Concerning decadal
changing trends of CO2 content
in atmosphere I have expressed that they are caused
by changing temperatures of
sea surface water on the seasurface areas where seasurface CO2 sinks are.
This basin - wide
change in the Atlantic climate (both warming and cooling) induces a basin - scale
sea surface temperature seesaw with the Pacific Ocean, which
in turn modifies the position of the Walker circulation (the language
by which the tropical basins communicate) and the strength of the Pacific trade winds.
The large interannual to decadal hydroclimatic variability
in winter precipitation is highly influenced
by sea surface temperature (SST) anomalies
in the tropical Pacific Ocean and associated
changes in large - scale atmospheric circulation patterns [16].
In his House of Commons presentation, toward the end, he gives a sketch of an alternative derivation of the «Climate Sensitivity» based on observed rates of evaporation increase per change in sea surface temperature, and this based on data from the 2007 paper by Wentz e
In his House of Commons presentation, toward the end, he gives a sketch of an alternative derivation of the «Climate Sensitivity» based on observed rates of evaporation increase per
change in sea surface temperature, and this based on data from the 2007 paper by Wentz e
in sea surface temperature, and this based on data from the 2007 paper
by Wentz et.
That's exactly what was done
in a new paper
by Kosaka and Xie (2013, Nature, doi: 10.1038 / nature12534) which investigates the impact of the tropical Pacific
sea surface temperature on global
temperature change.
Ocean acidification, rising ocean
temperatures, declining
sea ice, and other environmental
changes interact to affect the location and abundance of marine fish, including those that are commercially important, those used as food
by other species, and those used for subsistence.16, 17,18,122,19,20,21 These
changes have allowed some near -
surface fish species such as salmon to expand their ranges northward along the Alaskan coast.124, 125,126
In addition, non-native species are invading Alaskan waters more rapidly, primarily through ships releasing ballast waters and bringing southerly species to Alaska.5, 127 These species introductions could affect marine ecosystems, including the feeding relationships of fish important to commercial and subsistence fisheries.
the
sea surface temperature hasn't
changed in over 140 years), or is it the net energy released
by the ENSO cycle has balanced out to zero (
in which case how was that net energy release calculated for the first part of the record)?
These trends
in extreme weather events are accompanied
by longer - term
changes as well, including
surface and ocean
temperature increase over recent decades, snow and ice cover decrease and
sea level rise.
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
Since the scaling factor used is based purely on simulations
by CMIP5 models, rather than on observations, the estimate is only valid if those simulations realistically reproduce the spatiotemporal pattern of actual warming for both SST and near -
surface air
temperature (tas), and
changes in sea - ice cover.
El Nino leftover warm water pools drift into different parts of the oceans and continue to warm for years, an effect not characterized
by the ENSO index, but clearly visible
in sea surface temperature maps and
in the
temperature step
changes and plateaus following El Ninos.
Thousands of studies conducted
by researchers around the world have documented
changes in surface, atmospheric, and oceanic
temperatures; melting glaciers; diminishing snow cover; shrinking
sea ice; rising
sea levels; ocean acidification; and increasing atmospheric water vapor.
But more importantly, according to Peter, scientists now have the tools to test global circulation models and monitor worldwide
changes in sea surface temperatures and circulation brought about
by global warming.
Changes in mean global ocean pH / pCO2, due to uptake of anthropogenic CO2, will reduce pH (ca − 0.3 to 0.5 units / 500 + µatm), and global warming will contribute to increased
sea surface temperature (+1.1 to 6.4 °C),
by 2100 [1 — 4,7].
Over the past three decades,
changes in [CO2] have increased global average
temperatures (approx. 0.2 °C decade − 1 [2]-RRB-, with much of the additional energy absorbed
by the world's oceans causing a 0.8 °C rise
in sea surface temperature over the past century.
However continued high emissions causing
changes in sea -
surface temperatures and oxygen levels are likely to disrupt many ecosystems protected
by MPAs.
We present a novel method of uncovering mechanisms for global
temperature change by prescribing,
in addition to radiative forcing, the observed history of
sea surface temperature over the central to eastern tropical Pacific
in a climate model.
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 difference.