The most widely publicized attempt at agricultural technological
transfer during recent decades was the so - called «green revolution,» the strategy of which is well known.
The tremendous improvement in global crop production and worldwide growing
conditions during recent decades is one of the most important yet least reported news events of our time.
Published assessments of historic changes in
drought during recent decades have suggested that the frequency and area of droughts have been increasing.
From Solanki, Usokin, Kromer, Shussler, Beer's, 2004 paper «Unusual activity of the
Sun during recent decades compared to the previous 11,000 years»
The Intergovernmental Panel on Climate Change's consensus range of 1.5 ° to 5.8 °C projected global surface temperature warming by the end of the 21st century is considerably larger than the recent warming of less than 0.9 °C observed in spring and summer
during recent decades over the western region.
Forest management, agriculture, and extensive cattle - ranching are the principal activities upon which Central America's economy rests.4 Of these, cattle - ranching has developed the
most during recent decades.
«Erosion of Arctic coastlines has already been growing more
severe during recent decades, and this study points to a contributing factor that will likely become an even more recognizable culprit in the future.»
«In summary, this study provides strong evidence for a large increase in young female
drinking during recent decades, as reflected in the drinking of mothers and their female offspring in their early 20s.
Some countries with low fertility, such as Austria, Switzerland, or Spain prior to the 2008 recession, have experienced robust population growth driven by
immigration during the recent decades.
Welling's practice, which reflects fundamental changes in
photography during recent decades, shuffles the elemental components of the medium to produce distinctly uncompromising work.
He was explicitly using that mechanism to explain stratospheric cooling observed here on
Earth during recent decades (or rather that part of cooling not attributable to ozone depletion).
Some, not nearly all of these locations show a steady progression of increased temperatures — no more
rapid during recent decades than from over a hundred years ago, one includes 346 continuous years of data.
Similarly, changes in atmospheric circulation appear to have played a major role in the cooling seen over
Antarctica during recent decades (see the figure below).
For example, the Hadley cell, the large - scale pattern of atmospheric circulation that transports heat from the tropics to the subtropics, has marched
south during recent decades, moving the subtropical dry zone (a band that receives little rainfall) along with it.
As to why the airborne fraction might increase in the future even though it has
n't during recent decades... Richard Betts (on clivebest's site) has outlined some reasons (CO2 solubility reduces in warmer ocean water, changes in respiration and photosynthesis as ambient CO2, climate and other factors change).
Analysis of homogenized time series of mean and maximum monthly wind speed indicate decrease in near - surface wind
speeds during recent decades.
Dr. Mann's reconstruction of global temperatures shows a distinct pattern shaped like a hockey stick: Temperatures stayed level for centuries, with a sudden
upturn during recent decades.
These fires are undermining progress
made during recent decades in reducing pollution from tailpipes, power plants, and other industrial sources.
They are perhaps the largest uncertainty in our understanding of climate change, owing to disagreement among climate models and observational datasets over what cloud changes have
occurred during recent decades and will occur in response to global warming2, 3.
S1 and SI Text for more details), confirming a spatially heterogeneous evolution of the Northern Hemisphere atmospheric mercury
burden during recent decades.
We can not eliminate the possibility that slow evolution of environmental conditions (e.g., surface temperature and irradiation) and snow composition (e.g., sea salts levels) induced slight evolution in chemical processes involving GEM in the shallow
firn during recent decades.
As surface temperatures have risen
rapidly during recent decades, as compared to the preceding decades, increasing attention has been paid to the sun's potential impact on Earth's climate, but the size of this impact remains very controversial.