Not exact matches
While this is bad news
for the planet, it's good news
for climate change scientists who have —
for the last two decades — puzzled over
warming trends in ocean
surface temperatures for nearly 20 years.
• clean and sterilise all feeding parts before each use • do not use abrasive cleaning agents or anti-bacterial cleaners with bottles and teats • wash your hands thoroughly and ensure
surfaces are clean before handling sterilised components •
for inspection of the teat, pull it in each direction • place the teat in boiling water
for 5 minutes before first use to ensure hygiene • throw away bottle and teats at the first sight of damage, weakness or scratching • replace teats and spouts after 3 months use • do not
warm milk in a microwave as this may cause uneven heating and could scald your baby • always check the milk
temperature before feeding • make sure that the bottles are not over-tightened • do not allow your baby to play with small parts or run or walk while feeding
The drones can't come too soon
for scientists who study the El Niño — Southern Oscillation, a set of shifting global
temperature and rainfall patterns triggered by
warm surface waters that slosh back and forth across the equatorial Pacific every few years.
The finding surprised the University of Arizona - led research team, because the sparse instrumental records
for sea
surface temperature for that part of the eastern tropical Pacific Ocean did not show
warming.
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 show that even though there has been a slowdown in the
warming of the global average
temperatures on the
surface of Earth, the
warming has continued strongly throughout the troposphere except
for a very thin layer at around 14 - 15 km above the
surface of Earth where it has
warmed slightly less.
Their results suggest a drop of as much as 10 degrees
for fresh water during the
warm season and 6 degrees
for the atmosphere in the North Atlantic, giving further evidence that the concentration of atmospheric carbon dioxide and Earth's
surface temperature are inextricably linked.
All but one of the main trackers of global
surface temperature are now passing more than 1 °C of
warming relative to the second half of the 19th century, according to an exclusive analysis done
for New Scientist.
Warmer than average
temperatures were evident over most of the global land
surface, except
for parts of western Europe, northern Siberia, parts of eastern Asia and much of central Australia stretching north.
Ocean Only: The global ocean
surface temperature for the year to date was 0.99 °F (0.55 °C) above average, tying with 2010 as the second
warmest such period on record, behind only 1998.
The new analysis combines sea -
surface temperature records with meteorological station measurements and tests alternative choices
for ocean records, urban
warming and tropical and Arctic oscillations.
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).
Records of sea
surface temperature from oceanic sediment cores,
for example, show that the magnitude of
warming following several previous glaciations are well - correlated (www.ncdc.noaa.gov/paleo/recons.html).
As of 30 November, worldwide
surface temperatures mark 2000 as the fifth -
warmest year since 1880, while the United States was headed
for an all - time record until a frigid November set in.
The study examined 27 years worth of satellite data
for sea
surface temperatures, previous coral bleaching events, and studied how corals responded to different seawater
warming conditions.
Researchers identify such planets by first looking
for those that are situated within the «habitable zone» around their parent stars, which is where
temperatures are
warm enough
for water to pool on the
surface.
When sea
surface temperatures in that area
warms, moisture - bearing winds shift northward, said Katia Fernandes of Columbia University's International Research Institute
for Climate and Society.
Warmer than average
temperatures were evident over most of the global land
surfaces, except
for parts of the United States and western Europe, northern Siberia, parts of eastern Asia and much of central Australia stretching north.
The range (due to different data sets) of global
surface warming since 1979 is 0.16 °C to 0.18 °C per decade compared to 0.12 °C to 0.19 °C per decade
for MSU estimates of tropospheric
temperatures.
However,
for the globe as a whole,
surface air
temperatures over land have risen at about double the ocean rate after 1979 (more than 0.27 °C per decade vs. 0.13 °C per decade), with the greatest
warming during winter (December to February) and spring (March to May) in the Northern Hemisphere.
«The World Meteorological Organization (WMO) said global land
surface temperatures in January and April were likely the
warmest since records began in 1880, at more than 1 degree Celsius higher than average
for those months.
2) Three years ago, I tried to get a handle on whether UHI was responsible
for the recent
warming trend in most of the
temperature datasets by comparing the trends
for the UAH / MSU 2LT channel and the Jones et al.
surface data
for some of the world's «empty places».
For the change in annual mean
surface air
temperature in the various cases, the model experiments show the familiar pattern documented in the SAR with a maximum
warming in the high latitudes of the Northern Hemisphere and a minimum in the Southern Ocean (due to ocean heat uptake)(2)
There's also a tendency
for some people just to concentrate on atmospheric or
surface air
temperatures when there are other, more useful, indicators that can give us a better idea how rapidly the world is
warming.
Even if we focus exclusively on global
surface temperatures, Cowtan & Way (2013) shows that when we account
for temperatures across the entire globe (including the Arctic, which is the part of the planet
warming fastest), the global
surface warming trend
for 1997 — 2015 is approximately 0.14 °C per decade.
Naturally occurring interannual and multidecadal shifts in regional ocean regimes such as the Pacific El Niño - Southern Oscillation, the North Atlantic Oscillation, and the Atlantic Multidecadal Oscillation,
for example, are bimodal oscillations that cycle between phases of
warmer and cooler sea
surface temperatures.
With the contribution of such record warmth at year's end and with 10 months of the year record
warm for their respective months, including the last 8 (January was second
warmest for January and April was third
warmest), the average global
temperature across land and ocean
surface areas
for 2015 was 0.90 °C (1.62 °F) above the 20th century average of 13.9 °C (57.0 °F), beating the previous record warmth of 2014 by 0.16 °C (0.29 °F).
Not surprisingly, given that the
surface ocean is responsible
for much of atmospheric
warming, ocean
warming and global
surface air
temperatures vary largely in phase with one another.
Species with larvae that are likely to be particularly exposed to sea
surface warming (i.e., obligatory broadcast spawners and / or brooders) were regarded as having lower tolerance to
warming, and we used evidence of past mass high
temperature mortality as a proxy
for measuring adult colonies» tolerances.
Since NOAA began keeping records in 1880, the combined global land and ocean
surface temperature was the
warmest on record
for both April and
for the period from January through April in 2010.
Scientists at Lawrence Livermore National Laboratory within the Atmospheric, Earth, and Energy Division, along with collaborators from the U.K. Met Office and other modeling centers around the world, organized an international multi-model intercomparison project, name CAUSES (Clouds Above the United States and Errors at the
Surface), to identify possible causes for the large warm surface air temperature bias seen in many weather forecast and climate model simul
Surface), to identify possible causes
for the large
warm surface air temperature bias seen in many weather forecast and climate model simul
surface air
temperature bias seen in many weather forecast and climate model simulations.
When this model is run with a standard, idealised global
warming scenario you get the following result
for global sea
surface temperature changes.
Analysing
surface temperature data
for 1979 - 2015, they link a
warm Arctic during March to colder - than - average
temperatures over northern regions of North America and dry conditions in central southern areas between March and May.
ENSO events,
for example, can
warm or cool ocean
surface temperatures through exchange of heat between the
surface and the reservoir stored beneath the oceanic mixed layer, and by changing the distribution and extent of cloud cover (which influences the radiative balance in the lower atmosphere).
For the contiguous United States and Alaska, 2016 was the second -
warmest year on record and the 20th consecutive year that the annual average
surface temperature exceeded the 122 - year average since record keeping began, according to NOAA.
«The World Meteorological Organization (WMO) said global land
surface temperatures in January and April were likely the
warmest since records began in 1880, at more than 1 degree Celsius higher than average
for those months.
Although the January - November year - to - date global ranking is 4th
warmest, the effect of continued presence of La Niña conditions on the December global
surface temperature is expected to result in a slightly lower ranking
for the year as a whole.
If you download 1998 - 2009 cloud cover here, and sea
surface temperatures here, you can see that, except
for a cloud band from ~ 0 to 10 degrees N, cloudiness is generally less where SST is
warmer, though there are lots of details and spatial variation that lessen the correlation.
The
surface temperature increase that partially gave rise to concerns about global
warming coincided with a move to tethered electronic measuring devices (um, I think that means thermometers) that forced the movement of many stations closer to buildings and developed areas, causing
warming that may not have been corrected
for.
Meanwhile, the global
surface temperature for 2007 is expected to be fifth
warmest since records began in 1880.
ENSO events,
for example, can
warm or cool ocean
surface temperatures through exchange of heat between the
surface and the reservoir stored beneath the oceanic mixed layer, and by changing the distribution and extent of cloud cover (which influences the radiative balance in the lower atmosphere).
The IPCC purports to have a highly confident explanation
for the
warming since 1950, but it was only during the period 1976 - 2000 when the global
surface temperatures actually increased.
If not, and the upper troposphere
warms less rapidly than the
surface, the
temperature difference relevant
for hurricane strength will increase that much faster.
We do not know what the MOC has actually been doing
for lack of data, so the authors diagnose the state of the MOC from the sea
surface temperatures — to put it simply: a
warm northern Atlantic suggests strong MOC, a cool one suggests weak MOC (though it is of course a little more complex).
I have a post at Nate Silver's 538 site on how we can predict annual
surface temperature anomalies based on El Niño and persistence — including a (by now unsurprising) prediction
for a new record in 2016 and a slightly cooler, but still very
warm, 2017.
«The global annual
temperature for combined land and ocean
surfaces for 2007 is expected to be near 58.0 °F and would be the fifth
warmest since records began in 1880.
Surface temperature changes over the past century have been episodic and modest and there has been no net global
warming for over a decade now.1, 2
The point about heating (adding energy) vs
warming (
temperatures going up) is a very good one — it might help if the scientists involved with the major
temperature series people look at (GISS, RSS, etc) also produced a global
surface energy change index that accounted
for things like melting ice, which absorb heat without raising
temperatures.
-- The combined global land and ocean average
surface temperature for the December — February period was 0.41 °C (0.74 °F) above the 20th century average of 12.1 °C (53.8 °F), making it the 17th
warmest such period on record and the coolest December — February since 2008.
This was one of the motivations
for our study out this week in Nature Climate Change (England et al., 2014) With the global - average
surface air
temperature (SAT) more - or-less steady since 2001, scientists have been seeking to explain the climate mechanics of the slowdown in
warming seen in the observations during 2001 - 2013.