Sentences with phrase «model past climate»

Not exact matches

Climate models are complex numerical models based on physics that amount to hundreds of thousands, if not millions, of lines of computer code to model Earth's past, present and future.

Polar latitudes hold secrets into the earths's past climate, secrets Berry Lyons believes may provide insights into the implications of greenhouse gases in the atmosphere and better models of future climate change.

When scientists use climate models for attribution studies, they first run simulations with estimates of only «natural» climate influences over the past 100 years, such as changes in solar output and major volcanic eruptions.

Climate models, which are central to attribution studies, have also improved and are able to represent the current climate and that of the recent past with considerable fiClimate models, which are central to attribution studies, have also improved and are able to represent the current climate and that of the recent past with considerable ficlimate and that of the recent past with considerable fidelity.

Despite these flaws, global models are increasingly credible: when fed the factors at play in climate over the past 100 years, they accurately match what has been observed to occur.

Over the past 10 to 15 years, we have been running experiments with very complex and increasingly reliable global climate models.

Researchers Rebecca Dew and Michael Schwarz from the Flinders University of South Australia teamed up with Sandra Rehan, the University of New Hampshire, USA, to model its past responses to climate change with the help of DNA sequences.

Over the past forty years, the ice cover in summer has shrunk by more than half, with climate model simulations predicting that the remaining half might be gone by mid-century unless greenhouse gas emissions are reduced rapidly.

The goals of the project include reconstructing extreme climate changes from the recent past (1894 - 2014), using historically referenced data to assess near - future global climate model projections, and to ultimately use this analysis to investigate ecological problems in Chesapeake Bay, such as eelgrass diebacks.

Recent modelling by researchers from the Potsdam Institute for Climate Impact Research in Germany, as well as studies of past climate, suggest that the planet will soon have warmed enough to melt Greenland's ice sheet entirely — if it hasn't already become warm Climate Impact Research in Germany, as well as studies of past climate, suggest that the planet will soon have warmed enough to melt Greenland's ice sheet entirely — if it hasn't already become warm climate, suggest that the planet will soon have warmed enough to melt Greenland's ice sheet entirely — if it hasn't already become warm enough.

«Once these models can predict past changes, they can more accurately predict what will happen with future climate changes.»

Over the past 34 years, rainfall in Uganda has decreased by about 12 percent even though many of the global climate models predict an increase in rainfall for the area, according to an international team of researchers.

Studies of past climates usually point to the high end of this range, as do climate models.

In previous research, Overpeck and other colleagues showed current climate models simulated 20th - century conditions well, but the models can not simulate the 20 - to 60 - year megadroughts known to have occurred in the past.

The calculations are in line with estimates from most climate models, proving that these models do a good job of estimating past climatic conditions and, very likely, future conditions in an era of climate change and global warming.

Ballantyne and coauthors from Northwestern University, the University of Colorado and the National Center for Atmospheric Research used a global climate model to investigate the amplification of Arctic temperatures in Earth's past.

By understanding how these fishes evolved, by understanding how we got from the past to the present, we can create a model for predicting what's going to happen as global climates change, as deforestation continues, and all of these aquatic habitats change.

Co-author Nerilie Abram, from the Australian National University, said: «In order to better understand climate change in Antarctica, we need continued climate measurements in the Antarctic and Southern Ocean, and extension of these short observational records with past climate reconstructions and climate modelling.»

The newly recovered descriptions could provide valuable perspective about past conditions and possibly help scientists hone computer models that predict changes in the region's climate.

«Formation of coastal sea ice in North Pacific drives ocean circulation, climate: New understanding of changes in North Pacific ocean circulation over the past 1.2 million years could lead to better global climate models.»

«Factors affecting extinction and origination of species are surprisingly different, with past climate change having the highest impact on extinction but not on originations,» notes researcher Daniele Silvestro from the GGBC who developed the mathematical model used in the study.

Upper limits of experience All of the candidate cities — Almaty, Kazakhstan; Beijing, China; Krakow, Poland; Lviv, Ukraine; and Oslo, Norway — will likely be facing temperatures near the upper limits of what each region has experienced in the past 150 years, according to a Daily Climate analysis of climate models constructed by University of Hawaii, Manoa, geographer Camilo Mora and collClimate analysis of climate models constructed by University of Hawaii, Manoa, geographer Camilo Mora and collclimate models constructed by University of Hawaii, Manoa, geographer Camilo Mora and colleagues.

«Getting the past climate change correct in these models gives us more confidence in their ability to predict future climate change,» Otto - Bliesner says.

On the other hand, statistical analysis of the past century's hurricanes and computer modeling of a warmer climate, nudged along by greenhouse gases, does indicate that rising ocean temperatures could fuel hurricanes that are more intense.

The research used historical data — mainly from North American, Europe and East Asia — and an ensemble of climate models to analyze the past and future risk of various extreme hot, wet and dry events, including the highest daytime and nighttime temperatures, mildest low temperatures, wettest days, and longest dry spells.

However, unlike the climate model simulations, the new precipitation reconstruction does not show an increase of wet and dry anomalies in the twentieth century compared to the natural variations of the past millennium.

Schubert and his colleagues used a computer climate model to analyze conditions during the past 100 years.

The GRIP ice core is a unique archive of past climate and atmospheric chemistry which will improve climate models.

That's according to Wenju Cai at the CSIRO in Melbourne, Australia, whose team ran 21 climate models with data on past and future carbon emissions to see what would happen.

It was amazing to see how our results, when combined with work of many other research groups and compared to the newest generation of climate models, revealed a consistent story about how rainfall patterns were altered in the past.»

«The new work improves our understanding of history, allowing better model tests and allowing better assessment of how the ice responded to climate changes in the past,» Alley said, «and this will help in making better and more - reliable projections for the future.»

The study's findings could help test and improve climate models that are run for both past and future conditions.

The team's results «help us understand why Earth didn't warm as much as expected by climate models in the past decade or so.»

Climate change speeding up the clock Making a concerted effort to expand the «deep time» climate record is especially important because climate models have been constructed and refined using information on conditions over the past several hundred years, the reporClimate change speeding up the clock Making a concerted effort to expand the «deep time» climate record is especially important because climate models have been constructed and refined using information on conditions over the past several hundred years, the reporclimate record is especially important because climate models have been constructed and refined using information on conditions over the past several hundred years, the reporclimate models have been constructed and refined using information on conditions over the past several hundred years, the report says.

Climate change models have typically underestimated the amount of sea level rise observed over the past century.

In the past several years, researchers have used AI systems to help them to rank climate models, spot cyclones and other extreme weather events — in both real and modelled climate data — and identify new climate patterns.

In order to understand how El Niño responds to various climate forces, researchers test model predictions of past El Niño changes against actual records of past ENSO activity.

Importantly, these new observations can now be used in climate models to see if these past changes in ENSO processes can be reproduced.

Emslie's data will now allow geologists to calibrate models of past climate change and so make better climate predictions.

Using climate models and data collected about aerosols and meteorology over the past 30 years, the researchers found that air pollution over Asia — much of it coming from China — is impacting global air circulations.

New understanding of changes in North Pacific ocean circulation over the past 1.2 million years could lead to better global climate models

Past calculations of the cooling effect of aerosols have been inferred from «missing» global warming predicted by climate models.

The climate models have been tuned / backcast to past temps that have been jiggled to show more / faster warming.....

That may be true if you are talking about climate models, but in determining the impact of higher temperatures on ecosystems and agriculture, knowledge about the MWP and other past temperature extremes is likely very interesting.

Has this positive feedback been taken into account in climate model reruns of climate in the distant past?

Is the suns radiation still increasing over what it was in the past and do the climate models take this into account?

Axel Timmermann and Tobias Friedrich constructed a numerical model that quantifies the effects of past climate and sea - level change on global human migration patterns over the past 125,000 years.

The study noted that the same climate models the UN IPCC uses can only «explain only about half of the heating that occurred during a well - documented period of rapid global warming in Earth's ancient past.»

«The study found that climate models explain only about half of the heating that occurred during a well - documented period of rapid global warming in Earth's ancient past.

The models used to predict future global warming can accurately map past climate changes.