Sentences with phrase «of hydrological change»

There are a diverse range of biological and geochemical signatures that can be interpreted as direct or indirect indicators of hydrological change.

How important are differences between land cover reconstructions for our understanding of hydrological change?

How important are current differences between land cover reconstructions for our understanding of hydrological change?

Wetherald and Manabe (2002) provide a good description of the mechanism of hydrological change simulated by GCMs.

When comparing the history of hydrological changes in the region with artifacts from the Middle Stone Age, the researchers discovered a «striking correspondence between the archaeological record of South Africa and the timing of the abrupt climate change» as seen in the marine core, the study states.

http://www.springerlink.com/content/lm0024kv72t3841w/ «The simulated magnitude of hydrological changes over land are much larger when compared to changes over oceans in the recent marine cloud albedo enhancement study since the radiative forcing over land needed (− 8.2 W m − 2) to counter global mean radiative forcing from a doubling of CO2 (3.3 W m − 2) is approximately twice the forcing needed over the oceans (− 4.2 W m − 2).

Not exact matches

2.6 the change in the health of the asset (s) expected if environmental water is not provided including with regard to the long - term environmental water requirements of the asset (s) relative to recent hydrological conditions; and

Taking factors such as sea surface temperature, greenhouse gases and natural aerosol particles into consideration, the researchers determined that changes in the concentration of black carbon could be the primary driving force behind the observed alterations to the hydrological cycle in the region.

«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.

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.

Co-author Dr Alison Kay from the Centre for Ecology & Hydrology said: «Our hydrological modelling suggests that the increased likelihood of extreme rainfall arising from human - made climate change gives a more modest increase in extreme flows in the River Thames.

January 2004: «Directions for Climate Research» Here, ExxonMobil outlines areas where it deemed more research was necessary, such as «natural climate variability, ocean currents and heat transfer, the hydrological cycle, and the ability of climate models to predict changes on a regional and local scale.»

Studies of climate change using global climate models with a focus on changes in the hydrological cycle.

For the hydrological modelling of the Thames river catchment done at CEH we showed that the changes in atmospheric circulation and precipitation caused higher peak 30 - day river flow, while flood risk mapping revealed a small increase in flood risk for properties in the Thames catchment.

Conversion to arable land changes the hydrological regime In the present study, the cause for the decrease in species diversity is the changing hydrological regime resulting from the conversion of forest to arable land.

These changes made China a unique region to investigate the impact of aerosols on regional climate and the hydrological cycle.

It has been argued that the land amplification is associated with lapse rate changes (not represented in the UVic model), and it is certain that drying of the land can play a role (not reliable in the UVic model since diffusing water vapor gives you a crummy hydrological cycle, especially over land).

Because meter - scale suboxic zones occur today within the mobile mud belts of tropical river - dominated continental shelves, such as the Amazon Shelf, we hypothesize that sedimentological and hydrological changes during the PETM fostered the development of analogous conditions on the Eastern seaboard of North America.

The prize is awarded for «ground - breaking work that provides a powerful estimate of the effects of climate change on the global hydrological cycle, with a clear explanation of the global water budget.»

The patterns of salinity change can be used to infer changes in the Earth's hydrological cycle over the oceans (Wong et al., 1999; Curry et al., 2003) and are an important complement to atmospheric measurements.

In the context of future changes in the atmospheric hydrological cycle, understanding precipitation changes in the subtropics is of particular importance given

While the pupils above were making important changes to the benefit of their personal and social development, they and their class mates were also learning about rivers and the hydrological cycle, co-operative working, and many other things that supported the work of the class teacher.

Changes in ocean salinity can be a useful indicator of chagnes in the hydrological cycle, since the ocean integrates those cChanges in ocean salinity can be a useful indicator of chagnes in the hydrological cycle, since the ocean integrates those changeschanges.

As an integrating measurement made with high accuracy, freshwater content (salinity anomaly over a layer) is the most sensitive yardstick available for observing the global fingerprint of a changing hydrological cycle.

In many regions, changing precipitation or melting snow and ice are altering hydrological systems, affecting water resources in terms of quantity and quality (medium confidence).

Global warming is one kind of climate change caused by an increased greenhouse effect with an impact on both meteorology and the hydrological cycle.

Andy (or anyone else with full access)-- The abstract states that «Inferences from the observational record... indicate that models underestimate some of the changes in the hydrological cycle.»

I know in general terms that the hydrological cycle should intensify with warming and that one event is hard to pin on climate change, but it would be good to do a catch up on how the broad trend of extreme weather fits the models.

One of the topics on my perpetually growing reading list will be the changing energetics of the changing hydrological cycle.

The global map of the A1B 2080 to 2099 change in annual mean precipitation is shown in Figure 10.12, along with other hydrological quantities from the multi-model ensemble.

Visible changes in hydrological cycle have been observed in the form of changing precipitation patterns, cropping patterns, droughts, water availability periods, frequency and intensity of heatwaves, precipitation events and weather - induced natural disasters.

We need to look at the evaporative / condensation process combined with ALL aspects of global weather as an ever changing global heat energy removal system and not just as a part of the hydrological cycle as usually set out in models and schematic diagrams.

The end of the first half of the Holocene — between about 5 and 4 ka — was punctuated by rapid events at various latitudes, such as an abrupt increase in NH sea ice cover (Jennings et al., 2001); a decrease in Greenland deuterium excess, reflecting a change in the hydrological cycle (Masson - Delmotte et al., 2005b); abrupt cooling events in European climate (Seppa and Birks, 2001; Lauritzen, 2003); widespread North American drought for centuries (Booth et al., 2005); and changes in South American climate (Marchant and Hooghiemstra, 2004).

Oxygen - isotope (λ 18O) evidence of Holocene hydrological changes at Signy Island, maritime Antarctica Noon, P.E., Leng, M.J. and Jones, V.J. 2003; The Holocene 13: 251 - 263

Relatively rapid degradation of ice - rich permafrost is adversely affecting human infrastructure, altering Arctic ecosystem structure and function, changing the surface energy balance, and has the potential to dramatically impact Arctic hydrological process and increase greenhouse gas emissions.

Detection of change in world - wide hydrological time series of maximum annual flow: report by a team of experts under the leadership of Zbigniew W. Kundzewicz.

with increasing stress on crops due to changes in the hydrological cycle and heat stress, more and more farmers are seeking answers from modified crops to heartier breeds of cattle that are more accustomed to drought conditions such as those that come from Africa and India.

Development, use and application of the HYDROSPECT data analysis system for the detection of changes in hydrological time series for use in WCP - Water and National Hydrological Services: report by Maciej Radzeijewski and Zbigniew W.hydrological time series for use in WCP - Water and National Hydrological Services: report by Maciej Radzeijewski and Zbigniew W.Hydrological Services: report by Maciej Radzeijewski and Zbigniew W. Kundzewicz.

A survey of current approaches to modelling of hydrological time - series with respect to climate variability and change by George S. Cavadias; prepared for the World Climate Program - Water, Project A2.

Changes in hydrological cycles have taken place and the depletion of water resources are the top challenges Nepal faces in context of climate change.

Wrona, F. J., et al. (2016), Transitions in Arctic ecosystems: Ecological implications of a changing hydrological regime, J. Geophys.

Surface movement, hydrological change and equilibrium flow of Lemon CreekGlacier, Alaska, J. Glaciol., 5 (37), 61 - 75.

This policy document consists of a COP 16 position paper presenting the role that the weather, climate and hydrological communities can play in effectively addressing the objectives of the United Nations Framework Convention on Climate Change (UNFCCC).

Contribution from working group I to the fifth assessment report by IPCC TS.5.4.1 Projected Near - term Changes in Climate Projections of near - term climate show small sensitivity to Green House Gas scenarios compared to model spread, but substantial sensitivity to uncertainties in aerosol emissions, especially on regional scales and for hydrological cycle variables.

Degradation of near - surface permafrost (perennially frozen ground) caused by modern climate change is adversely affecting human infrastructure, altering Arctic ecosystem structure and function, changing the surface energy balance, and has the potential to dramatically impact Arctic hydrological processes and increase greenhouse gas emissions.

Instead, the speed of the hydrological cycle changes to a miniscule extent in order to maintain sea surface and surface air temperature equilibrium.

The Swedish Meteorological and Hydrological Institute (SMHI) presents unique data which depict regional climate change after a rise in global temperature of 1.5 degrees.

This technical document includes the analysis and findings of an on - line survey on the role of National Meteorological and Hydrological Services (NMHSs) in adaptation to climate variability and change.

These stationary - wave changes lead to large regional changes in the hydrological cycle and modify the sensitivity of the hydrological cycle to global warming.