Doesn't this suggest that
the land temperature rise will be a lot more than the global average?
In this case, the ocean temperature rise would match
the land temperature rise.
So I would say that the satellite MSU values provide a rough upper limit on
the land temperature rise, and that the actual rise is likely to be somewhat less than that.
«The urban heat island effect is locally large and real, but does not contribute significantly to the average
land temperature rise.
Prior groups at NOAA, NASA, and in the UK (HadCRU) estimate about a 1.2 degree C
land temperature rise from the early 1900s to the present.
If verified, this data would seem to put a dent in NOAA's scientific credibility, and in terms of data, some of the basis for determining U.S.
land temperature rises only.
Actually I've reread Gavin's letter to Klotzbach a little more carefully and he gives the GISS - ER figures: As might be expected,
the land temperatures rise faster than the global mean or ocean values (0.26 deg C / dec vs. 0.17 deg C / dec and 0.14 deg C / dec) So land to ocean trend ratios are: GISS - ER: 1.9 (1979 - 2005) SAT obs (1979 - 2008) HadCru: 1.6 GisTemp: 2.3 NCDC: 2.8
Earlier today, Hawkins tweeted part of Callendar's hand - drawn graph showing
land temperatures rising against the mean during the period 1880 - 1935 set against the «CO2 effect».
Not exact matches
Rising temperatures will warm the oceans and accelerate melting of
land ice, affecting sea - levels along the California coast.
New farmland is being developed in South America,
rising global
temperatures should increase the area of arable
land in north America and northern Europe and improved governance in Africa is leading to increased food production there.
Now, we pull pork from the heat at 135 ° and let the
temperature rise to 145 ° as it rests,
landing it right in the sweet spot: perfectly pink and USDA approved.
Authored by 77 scientists from the Forest Service, other federal agencies and universities across the United States, the report outlines the way forests respond physiologically to drought - stress, as well as steps
land managers and foresters can take to mitigate the impacts of
rising temperatures and a lack of water.
The World Bank estimates that over the next 15 years, the global economy will require $ 89 trillion in infrastructure investments across cities, energy and
land - use systems, and $ 4.1 trillion in incremental investment for the low - carbon transition to keep within the internationally agreed limit of a 2 - degree - Celsius
temperature rise.
According to his Berkeley Earth Surface
Temperature project, the average temperature on land has risen 1.5 degrees Celsius — roughly 2.7 degrees Fahrenheit —
Temperature project, the average
temperature on land has risen 1.5 degrees Celsius — roughly 2.7 degrees Fahrenheit —
temperature on
land has
risen 1.5 degrees Celsius — roughly 2.7 degrees Fahrenheit — since 1753.
While Earth's landmass has warmed by about 1 degree Celsius (about 2 degrees Fahrenheit) over the past century, on average,
land temperatures in the Arctic have
risen almost 2 C (3.6 F).
The experiments showed that, if Antarctica's
land height is reduced,
temperatures in the region respond more strongly to a
rise in the concentration of greenhouse gases over the continent.
A new study published in Earth System Dynamics, a journal of the European Geosciences Union, shows that
land height could be a «game changer» when it comes to explaining why
temperatures are
rising at such different rates in the two regions.
As
temperatures rise and more pollutants are dumped into the atmosphere, the plume of that toxic cloud will broaden like ink on a blotter, covering more
land under a suffocating carbon canopy.
They estimated that
land - use changes in the continental United States since the 1960s have resulted in a
rise in the mean surface
temperature of 0.25 degree Fahrenheit, a figure Kalnay says «is at least twice as high as previous estimates based on urbanization alone.»
Dams;
rising temperatures and carbon dioxide concentrations; droughts; and increased runoff of nutrients from urban and agricultural
lands are all compounding the problem.
Water scarcity, in particular, has been a source of territorial conflict when traditional systems of
land management fail in the face of
rising populations and
temperatures and declining rainfall.
They found that AP increased faster than air
temperature (AT) over
land in the past few decades, especially in the low latitude areas, and the
rise is expected to continue in the future.
They say their results line up with previously published studies and suggest that the average global
land temperature has
risen by roughly 0.9 °C since the 1950s.
At the time, massive amounts of carbon entered
land and sea, and global
temperatures rose by more than five degrees Celsius.
The apparent
rise in evapotranspiration — the process by which water is transferred from the
land to the atmosphere by evaporation from plants and soil — is increasing potential drought risk with
rising temperature trends, especially during periodic drought cycles that have been linked with strong El Nino events.
The sneezing, watery eyes and runny noses from seasonal allergies are poised to
land more people in the emergency room as
temperatures rise, researchers have found.
The slowdown refers to slower - than - expected rates at which
temperatures measured on the
land and at sea surfaces have been
rising since the turn of the century.
Any reforms to come from the process, starting next week, would affect about 62 percent of New York state's population, the proportion estimated to reside now in areas that could be hard hit as
rising land and ocean
temperatures raise average sea levels around the globe.
As world leaders hold climate talks in Paris, research shows that
land surface
temperatures may
rise by an average of almost 8C by 2100, if significant efforts are not made to counteract climate change.
It is commonly thought that hydrologic change is driven by precipitation and radiation changes caused by climate change, and that as the
land surface adjusts,
rising temperatures and lower precipitation will make the planet drier.
«Growing mosquito populations linked to urbanization, DDT's slow decay:
Rising temperatures due to climate change were found to have less influence on mosquito populations than
land use changes and the decay of residual DDT in the environment.»
This translates into an average
temperature rise of 4.3 C over
land in the northern hemisphere where most of the world's population lives, and even more in urban areas.
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.
Pierre, could you comment on what, exactly, is new in the recent Philipona paper, compared with the two similar papers they published last year («Greenhouse forcing outweighs decreasing solar radiation driving rapid
temperature rise over
land», «Radiative forcing — measured at Earth's surface — corroborate the increasing greenhouse effect»)?
The Nature article comes as climate scientists published what they said today was the «best ever» collection of evidence for global warming, including
temperature over
land, at sea and in the higher atmosphere, along with records of humidity, sea - level
rise, and melting ice.
They specifically wanted to answer the question is «the
temperature rise on
land improperly affected by the four key biases (station quality, homogenization, urban heat island, and station selection)?»
Rising global
temperatures have also made glaciers — ice masses that currently occupy nearly 10 percent of the world's total
land area — increasingly unstable.
Sea level
rise has two primary components: the expansion in volume of seawater with increased
temperature and the addition of water in ocean basins from the melting of
land - locked ice, including Antarctica and Greenland.
The former is likely to overestimate the true global surface air
temperature trend (since the oceans do not warm as fast as the
land), while the latter may underestimate the true trend, since the air
temperature over the ocean is predicted to
rise at a slightly higher rate than the ocean
temperature.
Meanwhile, as oceans heat up, thermal expansion causes sea levels that are already
rising from the melting of
land ice (triggered by higher air and sea
temperatures) to
rise even more.
On the whole, the Earth's
land surface has «greened» in response to
rising CO2 emissions and warmer
temperatures, but these new results suggest there could also be a negative impact of climate change on vegetation growth in North America.
According to new research, if
temperatures continue to
rise at the rate they're expected to, it could make 80 percent of Arabica - growing
land in Brazil and Central America unfit for farming by 2050.
Miami is a summer
land almost year round, and lately it feels the
temperatures just keep
rising.
Here we show that, globally,
temperatures over
land have
risen as much on windy nights as on calm nights, indicating that the observed overall warming is not a consequence of urban development.
However, the Management and Guest Contributors at WUWT accept the basic truth that CO2, water vapor, and other «greenhouse gases» are responsible for an ~ 33ºC boost in mean Earth
temperature, that CO2 levels are
rising, partly due to our use of fossil fuels, that
land use has changed Earth's albedo, and that this human actvity has caused additional warming.
After all, if average surface
temperature is 15 C, wouldn't you expect
land and ocean below the surface to equilibrate at roughly that
temperature (with a slightly
rising gradient to account for the flow of Earth's internal heat)?
Rising temperatures over
land lead to increased evaporation, which renders crops more susceptible to drought.
This compares to the 0.91 C
rise (+ / - 0.04 C) in
land temperatures since the 1950s.
The analysis shows that the
rise in average world
land temperature globe is approximately 1.5 degrees C in the past 250 years, and about 0.9 degrees in the past 50 years.
Land - based ice in glaciers and ice - sheets will keep contributing to sea level
rise as long as melting exceeds snowfall accumulation; stopping the growth of
temperature would not stop the net melting.