Sentences with phrase «hydrological year»

However because my Sierra Nevada research focused on snow pack and watershed effects, I had downloaded the USHCN data for the hydrological year, which extends from October of one year to September of the next.

The hydrological year slightly shifts temperature peaks and valleys seen in a January to December trend, which maybe why WRCC mistakenly thought my data was incorrect.

No one has ever announced the Warmest Hydrological Year Evah!!!

Not exact matches

However many geological features indicate the planet had an active hydrological cycle about 3 - 4 billion years ago.

The problem is that when this equilibrium is broken, the impacts for the hydrological system and vegetation seem to be rather persistent, taking 3 to 4 years for the system to recover,» says Eduardo Maeda.

Based on analyses of hydrological variations below the 29 - year Balbina dam and the 26 year old Tucurui dam in the Brazilian Amazon and their knowledge of channel morphology below the proposed Andean dams, the scientists also predicted that much of the floodplain below these impoundments could become permanently dry.

The research — published in the journal PLOS ONE — combines geological evidence from the Olduvai sedimentary basin in Northern Tanzania, which formed about 2.2 million years ago, and results from a hydrological model.

«Looking at changes in the number of dry days per year is a new way of understanding how climate change will affect us that goes beyond just annual or seasonal mean precipitation changes, and allows us to better adapt to and mitigate the impacts of local hydrological changes,» said Polade, a postdoctoral researcher who works with Scripps climate scientists Dan Cayan, David Pierce, Alexander Gershunov, and Michael Dettinger, who are co-authors of the study.

In hydrological data, there are series of 20 or 30 years, when we would need 100 years or more to see if there is a cycle of flooding and drought.»

Using a digital terrain model of the landscape and a hydrological model simulation the scientists found that planting trees on the floodplain and increasing the number of logjams, across 10 - 15 per cent of the total river length could reduce the peak height of a potential flood in the town by 6 per cent once the trees had grown for 25 years.

The paradox is that this season stands in such stark contrast to the past 11 years of drought, highlighting the types of variability that climate change can wreak on the hydrological cycle.

New data show that extreme weather events have become more frequent over the past 36 years, with a significant uptick in floods and other hydrological events compared even with five years ago, according to a new publication, «Extreme weather events in Europe: Preparing for climate change adaptation: an update on EASAC's 2013 study» by the European Academies» Science Advisory Council (EASAC), a body made up of 27 national science academies in the European Union, Norway, and Switzerland.

The study used detailed hydrological models to compare the amount of flooding in El Niño and La Niña years to the average from all years between 1958 to 2000.

As an environmental scientist myself, with more than 10 years experience working with hydrological computer models, I am very wary of policy formulated on the output of models, especially with respect to a system as complex and poorly understood as the Earth's climate system.

This analiytical report urges countries to modernize and invest in well - equipped and fully staffed meteorological and hydrological agencies to better prepare for natural hazards, which could save an average of 23,000 lives annually and provide up to US$ 30 billion a year in economic benefits.

The demand for accessible and accurate weather, climate, hydrological, marine and related environmental services will continue to grow in the years ahead.

Such natural extremes from climate persistence are quantitatively modeled by Harold E. Hurst (1951) in his breakthrough hydrological analysis of the 813 year record of Nile river flows (Rikert 2014).

``... snow pack has decreased and been observed to melt earlier in the calendar year... the observed changes in the hydrological components... can be explained well by anthropogenic forcing (green house gases and aerosols) alone.»

These human factors combine with inherent meteorological and hydrological limitations to create a distribution system that can be stressed to its limits even in near - average years.

(maybe in 150 years a mean temp increase of about 1.25 K, and probable increase in the rate of the hydrological cycle) Where is «the science» that dramatic reductions in fossil fuel use by humans will make a difference?

I have run hydrological and other models for 30 years.

Recent hydrological extreme events demonstrate the vulnerability of European society to water - related natural hazards, and there is strong evidence that climate change will worsen these events in the coming years.

As far as crops go, the problem is this: Changes to the hydrological cycle as a result of global warming may be neutral on a 100 - year timescale, as far as crop yields are concerned.

In Australia we have 20 to 40 year hydrological regimes in which the average summer rainfall in the wet regime is 4 to 6 times the average in a dry regime.

For a long time this has seemed to me to be the most obvious source of global hydrological variability on about a 25 year interval — and these hydrological variabilities are associated with the most significant surface temperature variations in recent times — and seemingly with the MWP and LIA.

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Since the CO2 looses 4.7 watts emission in a century, the earth accumulates this over the century raising temperature by 0.012 C / yr while the random chaos of the hydrological system with its raising temperature will radiate an additional power of 0.047 watts / year with its atmospheric water vapor temperature rise.

When one wishes to determine whether or not such distinct regimes are in fact observed, short hydrological records of 50 or 100 years are of little use.

Although these hydrological changes could potentially increase soil water availability in previously snow - covered regions during the cool low - ET season (34), this effect would likely be outweighed by the influence of warming temperatures (and decreased runoff) during the warm high - ET season (36, 38), as well as by the increasing occurrence of consecutive years with low precipitation and high temperature (Fig. 4A).

Although the recent drought may have significant contributions from natural variability, it is notable that hydrological changes in the region over the last 50 years can not be fully explained by natural variability, and instead show the signature of anthropogenic climate change.

Not building in the 100 year flood plain is standard hydrological policy.

Definitely yes, at some point in the future (billions of years), something not experienced on Earth will be affecting the climate, but over the relatively shorter - term, the same physical mechanisms control the climate, just playing on variations on the combinations, timing, and intensity of those mechanisms: namely: Milankovitch cycles, GHG concentrations, ocean cycles, hydrological cycle, volcanic activity, solar cycles, biosphere interactions, location of continents, etc..

With its population growing at 3 percent per year and with water tables falling everywhere, Yemen is fast becoming a hydrological basket case.

Published in the journal Hydrological Sciences, the study looks at data sets from 1884 to 2013 and found an upward trend in reported flooding, with flood events appearing more frequently towards the end of the 20th century, peaking in 2012 when annual rainfall was the second highest in over 100 years.