Sentences with phrase «global land area»

The percentage of global land area hit by drought doubled between the 1970s and the early years of this century.
2014 was not a record year for global land area annual temperatures.
Confidence in precipitation change averaged over global land areas since 1901 is low prior to 1951 and medium afterwards.
Diaz, H.F., Bradley, R.S. and Eischeid, J.L., 1989: Precipitation fluctuations over global land areas since the late 1800s.
We show that during the past several years the portion of global land area covered by summer temperature anomalies exceeding [3 standard deviations] has averaged about 10 %, thus an increase by about a factor of 50 compared to the period of climatology.»
But if evaporation is factored in, the study's authors say that it will «increase the percentage of global land area projected to experience at least moderate drying by the end of the 21st century from 12 to 30 percent.»
This period provides the best spatial coverage of homogenous daily series, which can be used for calculating the proportion of global land area exhibiting a significant change in extreme or severe weather.
In 2010, for example, one - fifth of the global land area experienced extreme maximum temperature anomalies that coincided with heat waves and droughts in Canada, the United States, Northern Europe, Russia, Kazakhstan, Mongolia and China and unprecedented droughts in tropical rainforests.
Temperature changes relative to the corresponding average for 1901 - 1950 (°C) from decade to decade from 1906 to 2005 over the Earth's continents, as well as the entire globe, global land area and the global ocean (lower graphs).
Globally, extremely warm nights that used to come once in 20 years now occur every 10 years.12 And extremely hot summers, those more than three standard deviations above the historic average, are now observed in about 10 % of the global land area, compared to 0.1 - 0.2 % for the period 1951 - 1980.13
In total, the global land area soaked up an average of around 477m tonnes of CO2 per year over the course of the study period, the study concludes.
Global land cover over time in the RCP4.5 scenario expressed as a percentage of total global land area
They applied this model to a variety of regions around the world (40 % of the global land area) during the season of greatest precipitation.
A discussion between Gavin Schmidt and Steve McIntyre on this subject led to the conclusion that the land - only amplification factor falls in the range of 0.78 to 1.23 (average over all global land areas), with a model mean close to 1 (using a script developed by McIntyre on 24 different models).
The global percentage of dry areas has increased by about 1.74 % (of global land area) per decade from 1950 to 2008.»
The global land area is 13 billion hectares.
Alternatively, Canada is home to 10 % of the world's fresh water while occupying a fraction of the global land area.
According to the United Nations Convention to Combat Desertification (UNCCD), one way to address droughts that cause more deaths and displaces more people than any other natural disaster, and to halt desertification — the silent, invisible crisis that threatens one - third of global land area — is to bring about pressing legal reforms to establish gender parity in farm and forest land ownership and its management.
Desertification, the silent, invisible crisis, threatens one - third of global land area.
The time series approximately corresponds to a trend, and this pattern and its variations account for 67 % of the linear trend of PDSI from 1900 to 2002 over the global land area.
We can conclude that a significant proportion of the global land area was increasingly affected by a significant change in climatic extremes during the second half of the 20th century.
«Historic and future increase in the global land area affected by monthly heat extremes» (Dim Coumou and Alexander Robinson 2013 Environ.
Under a high emission scenario, the projections show that by 2100, 3 - sigma heat waves will cover 85 per cent of the global land area and five - sigma heat waves will cover around 60 per cent of global land.
Water stress is modelled to decrease by the 2050s on 20 to 29 % of the global land area (considering two climate models and the SRES A2 and B2 scenarios) and to increase on 62 to 76 % of the global land area.
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