Not exact matches
And in many, many cases — such as with
ocean temperatures, rising sea levels, or ice shelf traveling speeds — scientists have
recorded the data for
decades, systematically, consistently, and with precision.
The key points of the paper are that: i) model simulations with 20th century forcings are able to match the surface air
temperature record, ii) they also match the measured changes of
ocean heat content over the last
decade, iii) the implied planetary imbalance (the amount of excess energy the Earth is currently absorbing) which is roughly equal to the
ocean heat uptake, is significant and growing, and iv) this implies both that there is significant heating «in the pipeline», and that there is an important lag in the climate's full response to changes in the forcing.
Other validating data for the corrected surface
temperature record comes from the
oceans, which have also been warming in recent
decades.
And at last they have found a new one: they suggest that the difference in the
temperature increase over land and the
oceans during the last
decades might be due to contaminations of the land
temperature record — They call it an anomalous behaviour — ignoring that it corresponds fully to what is physically expected.
In 2005, during the hottest average
decade on
record, 8 low - wind conditions known as «the doldrums» combined with very high
ocean temperatures to cause massive coral bleaching in the Virgin Islands.9 This was followed by a particularly severe outbreak of at least five coral diseases in the Virgin Islands, resulting in a decline in coral cover of about 60 percent.9 There is some indication that higher
ocean temperatures — between 86 and 95 degrees Fahrenheit (30 to 35 degrees Celsius)-- promote optimal growth of several coral pathogens.9 Other research showed that elkhorn coral post-bleaching had larger disease lesions than unbleached specimens, suggesting that bleaching may increase the corals» susceptibility to disease.9, 10
Although 2008 was the coolest year of the
decade, due to strong cooling of the tropical Pacific
Ocean, 2009 saw a return to near -
record global
temperatures.
This is achieved through the study of three independent
records, the net heat flux into the
oceans over 5
decades, the sea - level change rate based on tide gauge
records over the 20th century, and the sea - surface
temperature variations.
There are plenty of ways of looking at the surface air
temperature record that all show no statistically significant change in trend from earlier
decades, so any study that concludes sensitivity is different just with the addition of the past
decade must be automatically suspect, and that's not even taking into account the heat going into the
oceans.
This time period is too short to signify a change in the warming trend, as climate trends are measured over periods of
decades, not years.12, 29,30,31,32 Such
decade - long slowdowns or even reversals in trend have occurred before in the global instrumental
record (for example, 1900 - 1910 and 1940 - 1950; see Figure 2.2), including three
decade - long periods since 1970, each followed by a sharp
temperature rise.33 Nonetheless, satellite and
ocean observations indicate that the Earth - atmosphere climate system has continued to gain heat energy.34
This is achieved through the study of three independent
records, the net heat flux into the
oceans over 5
decades, the sea - level change rate based on tide gauge
records over the 20th century, and the sea - surface
temperature variations... We find that the total radiative forcing associated with solar cycles variations is about 5 to 7 times larger than just those associated with the TSI variations, thus implying the necessary existence of an amplification mechanism, although without pointing to which one.
Temperatures over
ocean in May were the highest on
record, and tied with three other
records (all set within the past two
decades) for «the highest departure from average for any month on
record.»
Living in the real world of a real country I am much more concerned with what the 350 year
temperature record is showing us, not the highly theoretical
ocean heat content of a poorly measured, medium with
records stretching back barely a
decade.
The Karl study looked mostly at
ocean temperature records several
decades old and determined that those older readings skewed too warm when compared to modern monitoring from buoys and other devices because they were taken in ships» engine rooms.
More on Global Climate Change: Canada Has Warmest (7.2 °F Above Normal) and Driest (22 % Below Normal) Winter on
Record Global
Ocean Temperatures Warmest Since
Records Began in 1880 NASA Makes it Official: 2000 - 2009 Was Hottest
Decade on
Record
If you have good measurements of upper
ocean and atmospheric
temperatures, then if you had a good
decade - long satellite
record of the Earth's total radiative energy balance from space — say, if Triana has been launched to in the late 1990s — then you could use conservation of energy to calculate the rate of heat uptake by the deep
ocean over the past ten years.
Despite large year - to - year fluctuations associated with the El Niño - La Niña cycle of tropical
ocean temperature, the conclusion could be made that global
temperature continued to rise rapidly in the 21st century, new
record heights being reached in every
decade.