This is the largest margin by which
an annual global land surface temperature has been broken.
Not exact matches
Alaska composes about one percent of Earth's total
land area, and its estimated
annual emissions in 2012 equaled about one percent of total
global methane emissions.
This led to small errors in the reported
land surface temperatures in the October, November, December and
Annual U.S. and
global climate reports.
Some other statistics: About half of the world's tropical forests have been cleared (FAO) Forests currently cover about 30 percent of the world's
land mass (National Geographic) Forest loss contributes between 6 percent and 12 percent of
annual global carbon dioxide emissions (Nature Geoscience) About 36 football fields worth of trees lost every minute (World Wildlife Fund (WWF)-RRB- Location.
Overall, the
annual global cost of
land degradation is estimated at around $ 300bn.
Some other statistics: About half of the world's tropical forests have been cleared (FAO) Forests currently cover about 30 percent of the world's
land mass (National Geographic) Forest loss contributes between 6 percent and 12 percent of
annual global carbon dioxide emissions (Nature Geoscience) About 36 football fields worth of trees lost every minute (World Wildlife Fund (WWF)-RRB- Rain Forest Threats, Rain Forest Species More than half of Earth's rain forests have already been lost forever to the insatiable human demand for wood and arable
land.
Some other statistics: About half of the world's tropical forests have been cleared (FAO) Forests currently cover about 30 percent of the world's
land mass (National Geographic) Forest loss contributes between 6 percent and 12 percent of
annual global carbon dioxide emissions (Nature Geoscience) About 36 football fields worth of trees lost every minute (World Wildlife Fund (WWF)-RRB- Deforestation occurs around the world, though tropical rainforests are particularly targeted.
«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.
Overall, ecosystem - driven changes in chemistry induced climate feedbacks that increased
global mean
annual land surface temperatures by 1.4 and 2.7 K for the 2 × and 4 × CO2 Eocene simulations, respectively, and 2.2 K for the Cretaceous (Fig. 3 E and F).
However, the CRU
global mean combined
land air / sea surface temperature estimates for Jan - Aug 2005 lag behind the 1998
annual mean estimate by 0.08 C (0.50 C vs. 58C for 1998) while GISS indicates a lag of 0.02 C.
For the 2005
global land - ocean index to exceed the
annual 1998 record, the mean anomaly needs to stay above 0.51 °C for the next three months.
The authors state: «Grasslands represent approximately 30 - 40 % of the planet's
land surface and only a fraction of
annual global productivity and carbon sequestration (~ 20 % of
global carbon stocks).
By comparing modelled and observed changes in such indices, which include the
global mean surface temperature, the
land - ocean temperature contrast, the temperature contrast between the NH and SH, the mean magnitude of the
annual cycle in temperature over
land and the mean meridional temperature gradient in the NH mid-latitudes, Braganza et al. (2004) estimate that anthropogenic forcing accounts for almost all of the warming observed between 1946 and 1995 whereas warming between 1896 and 1945 is explained by a combination of anthropogenic and natural forcing and internal variability.
Compare with NCEP / NCAR: Same
global - scale patterns — key thing to note is patterns of equator - pole &
land - ocean gradients, notably steep northern hemisphere winter western ocean boundary / eastern continent gradients — same large - scale
annual cycle pattern on both animations.
The
annual anomaly of the
global average surface temperature in 2014 (i.e. the average of the near - surface air temperature over
land and the SST) was +0.27 °C above the 1981 - 2010 average (+0.63 °C above the 20th century average), and was the warmest since 1891.
As Steve said, he picked up the idea for these posts from the Hawkins and Jones paper, and they said of that 1938 model: «Fig. 1 compares the latest CRUTEM4 (Jones et al. 2012) estimates for
annual near -
global land temperatures with that of Callendar (1938).
When I am proven right, the Climate Change Department will be swept away; Britain's
annual deficit will fall by a fifth; the bat - blatting, bird - blending windmills that scar our green and pleasant
land will go; the world will refocus on real environmental problems like deforestation on
land, overfishing at sea and pollution of the air; the U.N.'s ambition to turn itself into a grim,
global dictatorship with overriding powers of taxation and economic and environmental intervention will be thwarted; and the aim of science to supplant true religion as the world's new, dismal, cheerless credo will be deservedly, decisively, definitively defeated.
The difference in
annual mean and 5 - year mean
global land - ocean temperature using ERSST v4 and v3b.
The National Climatic Data Center (NCDC), which is part of the National Oceanic and Atmospheric Administration (NOAA), has maintained
global average monthly and
annual records of combined
land and ocean surface temperatures for more than 130 years.
An early 2008 study led by Tim Searchinger of Princeton University that was published in Science used a
global agricultural model to show that when including the
land clearing in the tropics, expanding U.S. biofuel production increased
annual greenhouse gas emissions dramatically instead of reducing them, as more narrowly based studies claimed.
But the longest data series of
annual figures available from the United Nations» Food and Agriculture Organization shows that
global forest cover has in fact increased, to 30.89 percent in 1994 from 30.04 percent of
global land cover in 1950.
Join GLOBE EU, the
Global Legislators Organization for Balanced Environment and
Global Footprint Network in marking Earth Overshoot Day — the date when humanity's
annual demand for the goods and services that our
land and seas can provide exceeds what Earth's ecosystems can renew in a year.
2014 was not a record year for
global land area
annual temperatures.
At current
annual rates of ~ 41 Gt CO2 for fossil fuels, industrial and
land - use emissions combined (Le Quéré et al 2017), time is running out on our ability to keep
global average temperature increases below 2 °C and, even more immediately, anything close to 1.5 °C (Rogelj et al 2015).
22
Land areas are projected to warm more than the oceans with the greatest warming at high latitudes
Annual mean temperature change, 2071 to 2100 relative to 1990:
Global Average in 2085 = 3.1 o C
Dryland ecosystems comprise a substantial proportion of total
land cover and constitute a significant component of
global biogeochemical cycles1, 6, yet owing to strong limitations by water and nutrients7, 8, undisturbed drylands are typically thought to maintain relatively low
annual rates of ecosystem processes — such as plant photosynthesis5 (but see refs 9, 10)-- and to harbour biological communities that change composition on relatively slow timescales11.
The statement, «This fits within the context of a long - term warming trend both here and around the globe,» Crouch said is still misleading or plain wrong as the trend of US and Canadian
annual temperatures has been declining for nearly two decades (17 years) or since 1998, North America which is cooling, not warming represents 16 % of
global land areas
Using a Monte Carlo approach (Arguez et al, 2013), NCDC considered the known uncertainty of the
global land and ocean
annual temperature in the 2014
annual ranking.
I have put together
annual time series for what I'm calling F, the fraction of Earth's
land surface in «severe drought» by the Palmer Drought Severity Index (PDSI < = 3), and P, the mean
global PDSI.
But the accumulative effect of these SAT wobbles on SST (& visa versa) at an
annual level are evident in the relative levels of wobbliness being more closely matched than in the monthly data (ie s.d. of NOAA
annual global ΔSST data is 40 % as wobbly as the
land ΔSAT) and the linear correlation rising to 15 %.
J. Le Marshall, «The Use of
Global AIRS Hyperspectral Observations in Numerical Weather Prediction,» 11th Symposium on Integrated Observing and Assimilation Systems for the Atmosphere, Oceans, and
Land Surface, 87th American Meteorological Society
Annual Meeting, San Antonio, Texas, January 15 - 18, 2007, available at http://ams.confex.com/ams/pdfpapers/119660.pdf.
As noted in my earlier reply, the
annual variations in monthly
global land surface temperatures are 4 times higher than those of TLT.
However, two recent papers published in Science, including the one we discussed in our post, have pointed out that when you take into account
land use changes, the
global warming pollution benefit of corn ethanol is negligible or not a benefit at all but a negative (researcher Joseph Fargione's team found that most biofuels «create a «biofuel carbon debt» by releasing 17 to 420 times more CO2 than the
annual greenhouse gas (GHG) reductions that these biofuels would provide by displacing fossil fuels.»)
the
annual variations in monthly
global land surface temperatures are 4 times higher than those of TLT.
Fasullo and Trenberth (2008b) went on to evaluate the temporal and spatial characteristics of meridional atmospheric energy transports for ocean,
land, and
global domains, while Trenberth and Fasullo (2008) delved into the ocean heat budget in considerable detail and provided an observationally based estimate of the mean and
annual cycle of ocean energy divergence and a comprehensive assessment of uncertainty.
The
annual Global Landscapes Forum conference, which took place in Bonn, Germany, this week (19 - 20 December) comes at an opportune time for land - sector advocates to celebrate a recent victory at COP23, and to begin organizing steps to make critical changes in global agricultural practices to assist in reducing greenhouse gas emis
Global Landscapes Forum conference, which took place in Bonn, Germany, this week (19 - 20 December) comes at an opportune time for
land - sector advocates to celebrate a recent victory at COP23, and to begin organizing steps to make critical changes in
global agricultural practices to assist in reducing greenhouse gas emis
global agricultural practices to assist in reducing greenhouse gas emissions.
Sugar
Land, TX — September 13, 2017 — Hyperion
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