The advantage of computer -
based models of the climate is that, unlike «experiments» on the real thing, experiments on a model climate can be repeated.
Not exact matches
It
modeled the implications for the company
of a requirement for emissions to decline to levels consistent with a so - called «2 °C world» after 2030 and also looked at a number
of alternative scenarios
based on divergent ranges in global growth and trade, geopolitics, technological innovation and responses to
climate change.
The Nexus Linking IBM, California Wine, and
Climate Modeling This month, IBM announced the creation
of a cloud -
based geospatial information and analytics service.
The two - year project, called Building
Climate Action Communities, will create a regional model of community - based climate change education programs, with a specific emphasis on moving people to
Climate Action Communities, will create a regional
model of community -
based climate change education programs, with a specific emphasis on moving people to
climate change education programs, with a specific emphasis on moving people to action.
«This document presents science - driven predictions,
based on sophisticated
climate - change
models, regarding how we think bird distributions in Massachusetts might change during the next 30 years,» said Jon Atwood, Mass Audubon Director
of Bird Conservation and a report author
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.
This is because the
models are
based on equations representing the best understanding
of the physical processes that govern
climate, and in 2001 they were not fine - tuned to reproduce the most recent data.
They used this data compilation to evaluate the quality
of their regional atmospheric
climate model,
based on global
climate projections that included several scenarios
of anticipated
climate change.
The study was
based on scenarios
of the Intergovernmental Panel on
Climate Change (IPCC) and on the «Integrated
Model to Assess the Greenhouse Effect» (IMAGE).
The results are
based on a number
of independent
climate archives, as well as instrumental records, and hold up whilst applying a wide range
of correction methods, which leads Laepple to believe that the problem lies more with the
models.
This critical question is addressed using simulations from
climate models based on projections
of future emissions
of greenhouse gases and aerosols.
The
model calculations, which are
based on data from the CLOUD experiment, reveal that the cooling effects
of clouds are 27 percent less than in
climate simulations without this effect as a result
of additional particles caused by human activity: Instead
of a radiative effect
of -0.82 W / m2 the outcome is only -0.60 W / m2.
When the weather -
based model developed at Rothamsted Research was used to predict how
climate change may affect the wheat crops, it was predicted that wheat flowering dates will generally be earlier and the incidence
of the ear blight disease on the wheat crops will substantially increase.
Professor Dan Lunt, from the School
of Geographical Sciences and Cabot Institute at the University
of Bristol said: «Because
climate models are
based on fundamental scientific processes, they are able not only to simulate the
climate of the modern Earth, but can also be easily adapted to simulate any planet, real or imagined, so long as the underlying continental positions and heights, and ocean depths are known.»
To see whether this increase in crops has influenced the region's unusual weather, researchers at the Massachusetts Institute
of Technology in Cambridge used computers to
model five different 30 - year
climate simulations,
based on data from 1982 to 2011.
The study was
based on reconstructions and
climate modelling of a period
of global warming 56 million years ago.
Based on a peatland
model developed at the University
of York and latest
climate change predictions, the researchers warn that by 2051 - 80 the dunlin could see a 50 % decline in numbers, with the golden plover down 30 % and the red grouse down by 15 %, all driven by declining abundance
of the birds» crane fly prey.
The team's findings, which are
based on real, observed data, mirror the predictions
of the
climate models.
London researcher Rachel Lowe, Ph.D., led the development
of the
model that is
based on 2016
climate conditions when El Nino was present in the urban coastal city
of Machala, Ecuador, an area where these mosquito - borne viruses are most prevalent.
Hertel and doctoral student Uris Baldos developed a combination
of economic
models — one that captures the main drivers
of crop supply and demand and another that assesses food security
based on caloric consumption — to predict how global food security from 2006 to 2050 could be affected by changes in population, income, bioenergy, agricultural productivity and
climate.
Agent -
based modeling is also used to explore the impact humans can have on their environment during periods
of climate change.
The researchers» predictions
of the problems each country would face were
based on
climate change
models produced by Austra - lia's national research organisation, the CSIRO.
Cynthia Rosenzweig, a researcher
based at Goddard, has been using crop - growth computer
models to predict effects
of carbon dioxide buildup and
climate change on wheat, the most widely cultivated crop in the world.
In a statement issued Wednesday, he noted: «This marks the first instance
of a species being listed
based upon a computer
model of future
climate from the United Nations Intergovernmental Panel on Climate
climate from the United Nations Intergovernmental Panel on
Climate Climate Change.
The international team
of co-authors, led by Peter Clark
of Oregon State University, generated new scenarios for temperature rise, glacial melting, sea - level rise and coastal flooding
based on state -
of - the - art
climate and ice sheet
models.
The new
modeling, conducted by the Washington, D.C. —
based nonprofit group
Climate Interactive, assumes annual emissions will remain flat for the remainder
of the century after 2025 to 2030; nations will neither do more to clamp down on annual emissions, nor allow them to rise.
Their findings,
based on output from four global
climate models of varying ocean and atmospheric resolution, indicate that ocean temperature in the U.S. Northeast Shelf is projected to warm twice as fast as previously projected and almost three times faster than the global average.
In the GRL study, researchers used a statistical
model based on historical
climate data to separate how much
of the extreme rainfall from Hurricane Harvey was due to natural influences and how much was due to human influences.
«When we included projected Antarctic wind shifts in a detailed global ocean
model, we found water up to 4 °C warmer than current temperatures rose up to meet the
base of the Antarctic ice shelves,» said lead author Dr Paul Spence from the ARC Centre
of Excellence for
Climate System Science (ARCCSS).
Noting that the timing
of KD outbreaks in Japan coincides with certain wind patterns from Asia,
climate scientist Xavier Rodó, PhD, and colleagues at the Catalan Institution for Research and Advanced Studies and the Catalan Institute of Climate Sciences, both in Barcelona, used computer models to simulate air currents and airborne particle transport for all days since 1977 with high numbers of KD cases in Japan, based on data compiled by Yoshikazu Nakamura, MD, and colleagues at Jichi Medical University in
climate scientist Xavier Rodó, PhD, and colleagues at the Catalan Institution for Research and Advanced Studies and the Catalan Institute
of Climate Sciences, both in Barcelona, used computer models to simulate air currents and airborne particle transport for all days since 1977 with high numbers of KD cases in Japan, based on data compiled by Yoshikazu Nakamura, MD, and colleagues at Jichi Medical University in
Climate Sciences, both in Barcelona, used computer
models to simulate air currents and airborne particle transport for all days since 1977 with high numbers
of KD cases in Japan,
based on data compiled by Yoshikazu Nakamura, MD, and colleagues at Jichi Medical University in Japan.
The findings are
based on analyses
of ancient plant leaf wax found in the sediments
of the Gulf
of Guinea in combination with computer
models of the
climate system.
The new findings
of successful multi-year drought / fire predictions are
based on a series
of computer
modeling experiments, using the state -
of - the - art earth system
model, the most detailed data on current ocean temperature and salinity conditions, and the
climate responses to natural and human - linked radiative forcing.
Colin Johnson, an atmospheric chemistry modeller at the Met Office Hadley Centre in Exeter, translates what is happening in the atmosphere into algorithms that form the
basis of climate models.
«One class
of crop
models is agronomy -
based and the other is embedded in
climate models or earth system
models.
For the first time, their study combines the strengths
of simulations
based on integrated energy - economy -
climate models that estimate cost - optimal long - term strategies to meet
climate targets with life cycle assessment approaches.
On the
basis of where in Europe each ESU is found, the researchers then analysed whether the associated insect would be able to tolerate higher temperatures or move to somewhere cooler, using two
models developed by the Intergovernmental Panel on
Climate Change (IPCC).
Seeing himself as a strict empiricist whose hurricane predictions are
based on decades
of «crunching huge piles
of data,» Gray is convinced that the atmosphere is too complicated to be captured in computer simulations, at one point fulminating that «any experienced meteorologist that believes in a
climate model of any type should have their head examined.»
Predictions
based on the Met Office
climate model suggest, «a rise
of 400 million in the number
of people at risk from hunger», he says.
«Non-linear» animal reactions He and his colleagues
based their analysis on nearly 500 million temperature records collected at 3,000 weather stations between 1961 and 2009, feeding that information into
models that allowed them to estimate how
climate shifts affected the metabolism
of cold - blooded insects, lizards and amphibians around the world.
To simulate the interplay
of global
climate with regional pollution conditions, the scientists turned to two
of the world's leading atmospheric
models, both
based at NCAR and developed through broad collaborations with the atmospheric science community.
To meet this need, Diouf proposed setting up a network
of 400 to 500 food and agriculture experts to provide «science -
based analysis» using the U.N Intergovernmental Panel
of Climate Change as a
model.
The estimations
of their occurrence in the future
climate is
based on the occurrence
of their favorable environments in
climate model simulations.
«This is a fantastic example
of STEM -
based science bringing together the ecological and
climate modeling communities; two sectors which rarely work hand - in - hand,» said Prof Pitman.
The ice sheets themselves are the biggest challenge for
climate modelling since we don't have direct evidence
of the many
of the key processes that occur at the ice sheet
base (for obvious reasons), nor even
of what the topography or conditions are at the
base itself.
In summary the projections
of the IPCC — Met office
models and all the impact studies (especially the Stern report) which derive from them are
based on specifically structurally flawed and inherently useless
models.They deserve no place in any serious discussion
of future
climate trends and represent an enormous waste
of time and money.As a
basis for public policy their forecasts are grossly in error and therefore worse than useless.For further discussion and an estimate
of the coming cooling see http://climatesense-norpag.blogspot.com
Scientists are involved in the evaluation
of global - scale
climate models, regional studies
of the coupled atmosphere / ocean / ice systems, regional severe weather detection and prediction, measuring the local and global impact
of the aerosols and pollutants, detecting lightning from space and the general development
of remotely - sensed data
bases.
Some
climate models suggest that, at current CO2 emissions levels, 80 percent
of Arctic waters could prove corrosive to clams, pteropods and other species at the
base of the polar food chain by 2060, the new statement said.
A recent paper by
climate skeptic politician Viscount Christopher Monckton claimed scientists»
model -
based projections
of climate change are overstated.
Finally it is not true, as implied on Page 12, that «sole reliance on
models to the exclusion
of observed behavior» is the
basis of future
climate prediction.
According to one study that looked at eight fuel aridity metrics in the Western U.S. and
modeled climate change's effects on them, human - caused
climate change accounted for about 55 percent
of the observed increases in fuel aridity between 1979 and 2015 (Figure 6), and added an estimated 4.2 million hectares
of forest fire area between 1984 and 2015.7
Based on all eight metrics, the Western U.S. experienced an average
of 9 additional days per year
of high fire potential due to
climate change between 2000 and 2015, a 50 percent increase from the baseline
of 17 days per year when looking back to 1979.