Sentences with phrase «increased over the historical period»

They find that though corn yield has increased over the historical period, the sensitivity of the yields to drought stress has also increased and that the largest factor contributing to drought sensitivity are changes in vapour pressure deficit.

There is very high confidence that models reproduce the general features of the global - scale annual mean surface temperature increase over the historical period, including the more rapid warming in the second half of the 20th century, and the cooling immediately following large volcanic eruptions...

Not exact matches

Their newest paper uses historical data from multiple countries to show that an increase in the ratio of household debt to gross domestic product over a three - to - four - year period predicts a decline in economic growth.

Over this same period of time, prices for salt in the U.S. have increased at an historical average of 3 % per year.

In order to answer this question, I then performed exactly the same historical performance analyses to the ones described above, with the exception that instead of using the Vanguard Long - Term Treasury Fund for the fixed income portion of my portfolio, I employed the Vanguard Short - Term Federal Fund (ticker symbol: VSGBX), which exhibited a much more conservative increase in price over the 20 year period in question.

Some people looked at parts of that work (for example, the lower right panel of Figure 1) and point out how the climate model oceans show a smooth and pretty much unbroken increase in heat content over the historical period.

In your case, the ice cores must be wrong, in my case, there is no problem with ice core CO2 (neither with historical CO2 levels over the oceans), as the 0.3 K temperature increase in the period 1900 - 1950 causes an increase of about 0.9 ppmv CO2, which is within the accuracy of the ice core measurements, the rest of the observed increase is due to human emissions.

Each simulation was subject to an identical scenario of historical «radiative forcing» (effectively an identical scenario of atmospheric carbon dioxide increase over the period) but each was started from a very slightly different atmospheric state — that is, with an almost infinitesimal difference in the initial value of global temperature.

The number of heat waves (extended periods of extremely hot weather) also has been increasing over the past fifty years... However, the heat waves of the 1930s remain the most severe in the U.S. historical record...»