3) If the margin of error is within 10 % (very high and wont be accepted for any model in the areas that I work in) then you can expect us to believe your 100
year model projections.
Not exact matches
To reach Marchionne's sales
projection, those
models would have to combine to sell about 50 percent more vehicles than what all of Fiat Chrysler delivered last
year.
Yielding hundreds of millions of dollars per
year, the established «kings» of the space have the same business
model we intend to execute... so our upside is well beyond the numbers shown in our financial
projections.
This season, the 25 -
year old Stanton is the favorite (+600) to lead all of baseball in home runs and most
projection models agree.
Bukiet's
model picked 2/3 of the ten post-season teams back in March (there were some ties in the original
projections leading to the fraction), a result that beat nearly 90 % of the experts (at Yahoo Sports, Sports Illustrated, ESPN and the Examiner) and that for the third
year in four placed him first at Baseballphd.nets annual contest to pick the teams who would make it to the playoffs.
They then used a crop
model to simulate daily water requirements for various crops, driven by the researchers»
modeled projections of precipitation and temperature, and compared these requirements with the amount of water predicted to be available for irrigation in a particular basin through the
year 2050.
Computer
model projections of future conditions analyzed by the Scripps team indicate that regions such as the Amazon, Central America, Indonesia, and all Mediterranean climate regions around the world will likely see the greatest increase in the number of «dry days» per
year, going without rain for as many as 30 days more every
year.
While this underestimate does not call into question the response of climate to carbon dioxide concentration in the IPCC
models, the researchers say, it does suggest that a better understanding of what happened during the last 50
years could improve
projections of future ecosystem changes.
For the study, Mahony and co-author Alex Cannon from Environment and Climate Change Canada looked at historical observations going back to 1901 and global climate
model projections to the
year 2100.
In the paper, the new
model projections calculate that atmospheric carbon dioxide could reach 1,960 parts per million by the
year 2250.
I must also announce again, like a broken record, that running averages for March 2006 Canadian high Arctic are totally warm: +5 to 10 degrees C warmer, more again like a Polar
model projection 20
years from now due to Polar Amplification as on a previous post on RC.
Exxon's science turned out to be spot on, and the company's early
modeling projections still hold up more than 30
years later, Hoffert said in an email to InsideClimate News.
Future ocean
projections for the
year 2100 were compiled from all available data generated by Earth Systems
Models as part of the Coupled
Model Inter-comparison Project Phase 5 (CMIP5) to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (Taylor et al., 2012) as in Mora et al. (2013).
The extra data spanning many thousands of
years that this study uncovers will go a long way to matching
model projections with past observations, helping scientists identify the most accurate
models for making predictions of future climate change.
Projections based on 29 climate
models suggest that the number of high wildfire potential days each
year could increase by nearly 50 percent by 2050 if greenhouse gas emissions continue unabated.
A study published earlier this
year and led by Prestemon used both climate
models and
projections of societal changes, like population growth and development, to look at how they might impact wildfire
projections.
With annual sales
projections of 800 units per
year, the NSX will sell in far fewer numbers than the Porsche 911, which sold 8528 units in 2012, but will be close to other brands» exotic
models, with the Audi R8 selling 802 units in 2013, and the Nissan GT - R selling 1188 units for the
year.
The contracting company specializes in both commercial and residential projects, and after exceeding
projections for the company's first five -
year plan, owner Eric Mendoza has put in place an even more optimistic growth
model.
In addition, Value Line has placed Altria in its
model portfolio of «Stocks With Long - Term Price Growth Potential,» which concentrates on
projections 3 - 5
years out.
The impacts I listed above are not based on computer
model projections of what things will look like in 100
years, they are things that the average person can see and witness right now.
The envelope of
model projections for the recent
years (discussed here) is easily wide enough to encompass what has actually happened — it has very little relevance to longer term trends.
I must also announce again, like a broken record, that running averages for March 2006 Canadian high Arctic are totally warm: +5 to 10 degrees C warmer, more again like a Polar
model projection 20
years from now due to Polar Amplification as on a previous post on RC.
I am not a modeler but if I understand their
projections in this area, within the next 30 - 50
years the
models show general cyclonic activity slowly moving north & east with tracks tending towards Spitzbergen.
Is there a probability / odds level «threshold» if - you - will, whereby if the odds of «x» number of «y»
years of observed temperature anomaly all occurring outside the confidence interval for a
model's temperature
projection, that it would be time for a paradigm shift in the particulars of the
model, moreso than the normal tweaks?
The combination of observation - based estimates... with NCAR CSM1.4 - carbon
model projection indicates that 10 % of the surface water along the investigated Arctic transect will become undersaturated for at least one month of the
year when atmospheric CO2 exceeds 409 ppm.
Furthermore, the lower bound of Monckton's Fantasy
Projections also overestimates the A2
model input before about the
year 2030.
Hansen himself (and, for full disclosure, my boss), revisited those simulations in a paper last
year, where he showed a rather impressive match between the recently observed data and the
model projections.
Wouldn't it be better if we put our efforts on accurate shorter term temperature
projections, say what will happen in 6 months no more than a few
years from now, check the
models and brag about their accuracy or correct their failures, if the
models are continuously correct all contrarian arguments die.
The graph shows that the El Niño
year 1998 is at the top and the last two cool La Niña
years are at the bottom of the
model projection range (for the various reasons explained above).
It would be 20
years of data Josh, assuming the topic is the divergence between
model projections and actual temps.
«Just
model - based rubbish» «we find the continued warming stagnation of fifteen
years, 1998 - 2012, is no longer consistent with
model projections even at the 2 % confidence level» — vonStorch (2013) When a
model can't do what it purports to do at even a 2 % confidence level, it IS RUBBISH!
No, it translates to climate
models can not accurately represent natural climate variability, which is why they can't project future global temperature at even the 2 % confidence level: «we find that the continued warming stagnation of fifteen
years, 1998 - 2012, is no longer consistent with
model projections even at the 2 % confidence level» — vonStorch (2013)
«An ongoing US Department of Energy - backed research project led by a US Navy scientist predicts that the Arctic could lose its summer sea ice cover as early as 2016 — 84
years ahead of conventional
model projections.»
These differences between projected and observed trends in rainfall seem to raise serious questions about the ability of the
models to predict changes in rainfall — though Iâ $ ™ d be interested in CSIRO views, especially on whether it is appropriate to use successive 11 -
year averages as measures of outcome and, if it is not, how the relationship between
projections and outcome should be monitored.
Skipjack tuna fisheries in the western Pacific warm pool will not be drastically impacted by climate change in the next 50
years, according to
projections with an ocean
model that divides the ocean into a high - resolution 10 km grid.
With this «business as usual»
projections o 1,5 % /
year emissions increase for his scenario A, his
models predicted a CO2 atmospheric content of 384 ppmV for 2006 (R. Pielke Jr's graph in # 44).
The problem I see with HadCRUT4 and
models is that HadCRUT3 have been used to parametrize most
models (HadCRUT4 is less than 10
years old) and hadCRUT4 is been used to test the validity of the
projections of the
models.
When these past megadroughts are compared side - by - side with computer
model projections of the 21st century, both the moderate and business - as - usual emissions scenarios are drier, and the risk of droughts lasting 30
years or longer increases significantly.
Each additional
year that the 0.20 C / decade rise fails to happen the
model projections become more wrong.
For going on two
years now, I've been trying to publish a manuscript that critically assesses the reliability of climate
model projections.
By contrast, according to climate
model projections, the probability of the hiatus extending beyond 20
years is vanishing small.
Second, we compared
projections centered 80
years from now (2070 — 2099) from two global climate
models with higher and lower sensitivities to atmospheric greenhouse gas levels.
Their work encompasses a range of problems and time scales: from five - day
model predictions of hurricane track and intensity, to understanding the causes of changes in extremes over the past century, to building new climate prediction
models for seamless predictions out to the next several
years, to earth system
model projections of human - caused changes in various extremes (heat waves, hurricanes, droughts, etc.) over the coming century.
Note that the
model output does not include
projections for every
year.
Focusing on the «pause» is mainly significant in context of the comparison between climate
model projections and surface temperatures... Attempts to spin 2014 as a possible «warmest
year» is exactly that: spin designed to influence the Lima deliberations....
2.0 C
Projections: This simple
model puts hitting equilibrium temp of 2.0 C at 2043 (2.5 ppm annual rise) with a baseline of 1955; 25
years from now.
Meehl and Teng recently showed that when this is done, thereby turning a
model projection into a hindcast, the
models reproduced the observed trends — accelerated warming in the 1970s and reduced rate of surface warming during the last 15
years — quite well.
What really has us concerned is this event has been going on for more than a
year and our preliminary
model projections indicate it's likely to last well into 2016.»
However, temperatures in recent
years — both during the El Niño event and, more importantly, now that the El Niño event is over — are tracking rather close to the average
projection of the climate
models included in the latest report from the Intergovernmental Panel on Climate Change (the CMIP5
models).
Someone may eventually figure out an indicator that works a
year out, but the more accurate short - term
projections will likely come when the fine mechanics of the Arctic are more robustly incorporated into
models.