«
For sea surface temperature change, you would have to do it over a very large area and you would have to do it quickly,» he said.
Not exact matches
So while it may take decades
for warming at the
sea surface to
change deep -
sea temperatures, alterations in wind - driven events may have more immediate effects.
The results suggest that the impact of
sea ice seems critical
for the Arctic
surface temperature changes, but the
temperature trend elsewhere seems rather due mainly to
changes in ocean
surface temperatures and atmospheric variability.
Kevin Trenbeth, a climate scientist at the National Center
for Atmospheric Research in Boulder, Colo., said the study didn't account
for changes in
sea surface temperatures, which are the main drivers of
changes in the position of the rain belts (as is seen during an El Nino event, when Pacific warming pushes the subtropical jet over the Western U.S. southward).
For example, tides, winds and
sea surface temperature could disrupt their migration habits, and ocean color — referring to the water's chemical and particle content — could reflect
changes in the food chain.
The data, in the form of infrared images of the Earth's
surface, is used to detect
changes in
sea surface temperatures for research -LSB-...]
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.
Scientists use a large drill to remove parts of the coral to analyse
for information about
changes in rainfall and
sea surface temperature.
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.
When this model is run with a standard, idealised global warming scenario you get the following result
for global
sea surface temperature changes.
However, climate
change is causing abnormally high
sea -
surface temperatures, which is causing corals to bleach during summer months (see below
for detail).
Past summer, extratropical
temperature changes appear,
for example, to have have differed significantly from annual
temperature changes over the entire (tropical and extratropical) Northern Hemisphere, and tropical Pacific
Sea Surface Temperatures appear to have varied oppositely with temperatures in the extratropical regions o
Temperatures appear to have varied oppositely with
temperatures in the extratropical regions o
temperatures in the extratropical regions of the globe.
The basic problem is that method
for measuring
sea surface temperature has
changed over time and across different ships, and this needs to be corrected
for.
It is widely realized that WWii saw
changes in the construction of sampling buckets
for sea surface temperature measurement, and many navies switching to water intake
temperatures in compiling data from ships at
sea.
For the «business - as - usual» scenario RCP8.5, the model - mean changes in 2090s (compared to 1990s) for sea surface temperature, sea surface pH, global O2 content and integrated primary productivity amount to +2.73 °C, − 0.33 pH unit, − 3.45 % and − 8.6 %, respective
For the «business - as - usual» scenario RCP8.5, the model - mean
changes in 2090s (compared to 1990s)
for sea surface temperature, sea surface pH, global O2 content and integrated primary productivity amount to +2.73 °C, − 0.33 pH unit, − 3.45 % and − 8.6 %, respective
for sea surface temperature,
sea surface pH, global O2 content and integrated primary productivity amount to +2.73 °C, − 0.33 pH unit, − 3.45 % and − 8.6 %, respectively.
For example,
temperature changes on
sea surfaces can signal widespread weather shifts like El Niño.
Until you can all agree on whether
changes in soil moisture are due to lower solar, or due to higher CO2, use solely
sea surface temperatures for global mean
surface T
change.
Titel Een nieuwe zeeoppervlaktetemperatuur proxy gebaseerd op membraanlipiden van plankton van Archaea: de TEX86 Abstract Determination of past
sea surface temperatures (SST) is of primary importance
for the reconstruction of natural climatic
changes.
As a result, directly comparing the
Sea Surface Temperature data from the early 20th century to the current
Sea Surface Temperature data is like «comparing apples and oranges» — there have been too many
changes in the data sources
for such comparisons to have much meaning.
These are measurements of
sea surface temperature and atmospheric pressure over more than 100 years which show evidence
for abrupt
change to new climate conditions that persist
for up to a few decades before shifting again.
Sea surface temperature (SST) measured from Earth Observation Satellites in considerable spatial detail and at high frequency, is increasingly required
for use in the context of operational monitoring and forecasting of the ocean,
for assimilation into coupled ocean - atmosphere model systems and
for applications in short - term numerical weather prediction and longer term climate
change detection.
Subsequently, climate
change has been greatly affected as Antarctic Intermediate Water have cooled and exerted a tremendous effect on tropical
sea surface temperatures for millions of years via «ocean tunneling».
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).
available peer - reviewed, science - based evidence to model the implications of their proposals
for atmospheric carbon dioxide concentrations, global mean
surface temperature,
sea level rise, and other climate
change impacts at the global scale.
Ocean warming: «Assessing recent warming using instrumentally homogeneous
sea surface temperature records» «Tracking ocean heat uptake during the
surface warming hiatus» «A review of global ocean
temperature observations: Implications
for ocean heat content estimates and climate
change» «Unabated planetary warming and its ocean structure since 2006»
For example, let's say that evidence convinced me (in a way that I wasn't convinced previously) that all recent
changes in land
surface temperatures and
sea surface temperatures and atmospheric
temperatures and deep
sea temperatures and
sea ice extent and
sea ice volume and
sea ice density and moisture content in the air and cloud coverage and rainfall and measures of extreme weather were all directly tied to internal natural variability, and that I can now see that as the result of a statistical modeling of the trends as associated with natural phenomena.
Tapster, Dan, 167 Tata Steel Corporation, 44 Taylor, Mitch, 137 Taylor, Richard, 107 - 108
Temperature, global, 10, 14, 16, 47 - 48, 51, 53, 55 - 56, 58 - 69, 79 - 80, 86 - 87, 89 - 92, 94, 97 - 99, 101, 105 - 108, 110, 120, 133, 135 - 136, 140, 147, 159 - 160, 162, 169, 180, 182, 239 - 240, 242, 246 proxy, 58, 60, 64, 66, 69, 76, 159 - 160 record (data), 145, 147 - 153, 160 - 161, 169
sea surface (SST), 58 - 62, 68 - 69, 116 - 118, 139, 238, 240 Texas A & M University, 167 Texas Tech University, 116 The Book of Icelanders, 56 The Chilling Stars, 96 The Climate Crisis, 120 The Foundation Center, 175 The Guardian, 124 The New York Times, 103, 105 The Population Bomb, 32 The Weather Makers, 10 TNO Management Consultants, 22 Tornado, 114 - 116, 119 - 120, 125, 240 Trenberth, Kevin, 67, 119, 162 - 163, 170, 238 Trent University, 156 Troposphere, 89 - 91, 96, 105 Tunesia, 157 Turner, Jonathan, 28 Turner, Ted, 33 Tyndall Centre
for Climate
Change Research, 35, 167 - 168, 225
Many variables — rainfall,
sea surface temperature, fisheries, cyclone frequency — all are observed in empirical evidence — hard data — to
change abruptly and
for lessor or longer periods.
Combine the satellite trend with the
surface observations and the umpteen non-
temperature based records that reflect
temperature change (from glaciers to phenology to lake freeze dates to snow - cover extent in spring & fall to
sea level rise to stratospheric temps) and the evidence
for recent gradual warming is, well, unequivocal.
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.
How hurricanes develop also depends on how the local atmosphere responds to
changes in local
sea surface temperatures, and this atmospheric response depends critically on the cause of the
change.23, 24
For example, the atmosphere responds differently when local
sea surface temperatures increase due to a local decrease of particulate pollution that allows more sunlight through to warm the ocean, versus when
sea surface temperatures increase more uniformly around the world due to increased amounts of human - caused heat - trapping gases.25, 26,27,28
Type 3 downscaling is applied,
for example,
for seasonal forecasts where slowly
changing anomalies in the
surface forcing (such as
sea surface temperature) provide real - world information to constrain the downscaling results.
Mototaka Nakamura, a senior scientist at the Japan Agency
for Marine - Earth Science and Technology, analyzed
surface temperatures of the Greenland
Sea from 1957 to the present and how they affect climate
change.
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.»
The slab ocean model is a computationally efficient scheme that allows
sea surface temperatures to interact with the atmosphere; and is necessary
for propagating energy imbalances due to land cover
change that lead to shifts in precipitation.
Because the GISS analysis combines available
sea surface temperature records with meteorological station measurements, we test alternative choices
for the ocean data, showing that global
temperature change is sensitive to estimated
temperature change in polar regions where observations are limited.
«Assessing recent warming using instrumentally homogeneous
sea surface temperature records» «Tracking ocean heat uptake during the
surface warming hiatus» «A review of global ocean
temperature observations: Implications
for ocean heat content estimates and climate
change» «Unabated planetary warming and its ocean structure since 2006»
Sea surface temperatures change at many scales
for many reasons.
280 Though I can not find any literature on equatorial warming triggering reorganization
for the D - O events, there are reports,
for the glacial - interglacial transition, that Pacific
sea surface temperatures warmed 3,000 years before
changes in ice volumes.
Normally you can run GCM
for centuries with a stable realistic
surface temperature, but take the CO2 out, and in 5 - 10 years it has dropped 30 C in global average
temperature and is half - covered in
sea ice due to a powerful water vapor feedback in response to any global
temperature change.
How hurricanes develop also depends on how the local atmosphere responds to
changes in local
sea surface temperatures, and this atmospheric response depends critically on the cause of the
change.23, 24
For example, the atmosphere responds differently when local
sea surface temperatures increase due to a local decrease of particulate pollution that allows more sunlight through to warm the ocean, versus when
sea surface temperatures increase more uniformly around the world due to increased amounts of human - caused heat - trapping gases.18, 25,26,27 So the link between hurricanes and ocean
temperatures is complex.
Observed
changes in (a) global average
surface temperature; (b) global average
sea level rise from tide gauge (blue) and satellite (red) data and (c) Northern Hemisphere snow cover
for March - April.
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.
Multi-model mean
changes in
surface air
temperature (°C, left), precipitation (mm day — 1, middle) and
sea level pressure (hPa, right)
for boreal winter (DJF, top) and summer (JJA, bottom).
What he does not do, and should have done is plotted the
change in the effect over time against some emperical measure of either
temperature or
surface heat content (either OHC directly
for when we have the data, or glacial extents, or
sea levels).
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)?
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.