- ABC@home: Project News 17 Dec 2014
17.12.2014 00:00 Uhr
ABC@home will be down for a few hours (at least) while we migrate to a new machine/setup.
- ABC@home: Project News 22 May 2013
22.05.2013 00:00 Uhr
ABC@home may (again) be unavailable for some periods over the next few days.
- ABC@home: Project News 18 February 2013
18.02.2013 00:00 Uhr
ABC@home may be unavailable for some periods over the next few days.
- ABC@home: Project News 7 December 2012
07.12.2012 00:00 Uhr
Due to planned maintenance work on the university network, ABC@home will probably be unavailable from 17:00 UTC today until around 07:00 UTC tomorrow.
- ABC@home: Project News 8 September 2012
08.09.2012 00:00 Uhr
We’ve reached another milestone in our search; while we verify the data and prepare for future work, there will be far fewer workunits available. Thanks for all the support so far, and we look forward to having more work available soon!
- ABC@home: Project News 25 March 2012
25.03.2012 00:00 Uhr
We’ve encountered a problem with our feed of new work units, so there’s no new work available right now. Sorry! We’re working on fixing it.
- ABC@home: Project News 10 September 2011
10.09.2011 00:00 Uhr
Due to a flood of spam, we’ve temporarily restricted who can post to the project forums.
- ABC@home: Project News 9 April 2011
09.04.2011 00:00 Uhr
A quick update: A lot of spam profiles were removed in the last few days, do complain if we removed any legitimate ones by mistake! Also, preliminary data for all triples with c no more than 10^18 has been available from our data page for a while now, although it is (of course) still preliminary at this point. Many thanks to our dedicated users, and we’ve now moved onward to further reaches of the search space!
- ABC@home: Project News 3 October 2010
03.10.2010 00:00 Uhr
ABC@home will be unavailable for some periods over the next few days.
- AlmereGrid Boinc Grid: De afgelopen week hadden we problemen met de schijven van de server. Alles lijkt nu opgelost
14.01.2014 00:00 Uhr
- AlmereGrid Boinc Grid: Past week we had problems with the disks of our server. Everything seems to be resolved now
14.01.2014 00:00 Uhr
- AlmereGrid Boinc Grid: Wat doet Correlizer? Zie de beschrijving op .
22.02.2012 00:00 Uhr
- AlmereGrid Boinc Grid: What does the Corellizer application do? See description on .
22.02.2012 00:00 Uhr
- AlmereGrid Boinc Grid: The first 10.000 WUs of the new version of Correlizer are now in the system.
19.07.2011 00:00 Uhr
- AlmereGrid Boinc Grid: De eerste 10.000 WUs van de nieuwe versie van Correlizer zitten nu in het systeem
19.07.2011 00:00 Uhr
- AlmereGrid Boinc Grid: Komende maandag, 30 mei, beginnen we met een upgrade van de server en een installatie van een nieuwe versie van BOINC. We verwachten na drie dagen weer online te zijn.
27.05.2011 00:00 Uhr
- AlmereGrid Boinc Grid: We start upgrading the server with a new version of BOINC on Monday May 30th 2011. We expect it takes about three days to be online again.
27.05.2011 00:00 Uhr
- AlmereGrid Boinc Grid: Rapport samengesteld door
internationale teams van experts onder leiding van AlmereGrid.
16.02.2011 00:00 Uhr
- BOINC: New AWS BOINC server image available.
17.11.2015 20:13 Uhr
A new BOINC server image for AWS is now available, making it easy to deploy a BOINC server in the Amazon cloud.
- BOINC: Dealing with unpredictable job sizes
20.10.2015 20:13 Uhr
The paper “Subdividing Long-Running, Variable-Length Analyses Into Short, Fixed-Length BOINC Workunits” recently appeared in the Journal of Grid Computing.
- BOINC: BOINC:FAST2015 conference proceedings available
07.10.2015 21:02 Uhr
The BOINC:FAST 2015 conference was held 14-18 Sept. at the Karelian Research Centre of Russian Academy of Sciences. Slides are available online.
- BOINC: Welcome SRBase
07.10.2015 20:57 Uhr
SRBase is a mathematical research project trying to solve Sierpinski / Riesel Bases up to 1030.
- BOINC: BOINC wallpaper
26.09.2015 06:30 Uhr
A BOINC wallpaper image created by Francois Normandin:
- BOINC: BOINC on reddit
23.09.2015 22:33 Uhr
Check out the BOINC subreddit, which aggregates BOINC news from various sources.
- BOINC: Tell the White House about BOINC
15.09.2015 20:44 Uhr
The White House is staging a webcast forum on citizen science on Sept. 30. Let’s make sure that BOINC and volunteer computing are represented in this event! Please tell the White House about your experience with volunteer computing, and why it’s important.
- BOINC: New version of Linux monitor/control script released
15.09.2015 19:53 Uhr
An improved version of the BOINC bash script add-on is available.
- BOINC: Motherboard article on volunteer computing
08.09.2015 05:15 Uhr
An article about volunteer computing and BOINC appeared in the tech news web site Motherboard.
- climateprediction.net: 8 publications in special report rely on weather@home simulations to explain extreme weather events of 2014 in Australia, Africa and South America
05.11.2015 17:00 Uhr
Human-induced climate change plays a clear and significant role in some extreme weather events but understanding the other risks at a local level is also important, highlights Bulletin of the American Meteorological Society’s annual special report, Explaining Extreme Events of 2014 from a Climate Perspective. For the fourth year in a row it investigates the causes of a wide variety of extreme weather and climate events from around the world, including eight studies using weather@home simulations. Researchers from the core CPDN teams in Oxford and Melbourne teamed up with collaborators around the globe. They examined serious droughts in Brazil, East Africa and the eastern Mediterranean, heat and cold waves in Argentina and Australia, and extreme rainfall in New Zealand.
There was a clear influence of human-induced climate change in the temperature driven extreme events, the heavy rainfall in New Zealand and on the failing rains in the Levant region. However, a fingerprint of human activity was not detected in the in the other two droughts. In those cases, other causes of water shortages came into play due to local factors, such as increased water demand, population growth or methods used for irrigating the crops.
These eight papers looking at extreme events in 2014 show just how much global warming has become a part of todays climate. The also highlight that the field called extreme event attribution, which looks for the fingerprints of human-caused warming in extreme weather events, has made considerable advances over the past years. The goal of extreme event attribution science is to provide this evidence and thanks to our dedicated volunteers we are in a unique position to provide the necessary modelling framework to look into the changing statistics of rare and unprecedented events.
An increase in extreme heat events around the globe is observed and expected to be one of the first apparent symptoms of global warming. This increase can be quantified thanks to the very large ensembles created by CPDN volunteers. Research led by Dr Andrew King from Melbourne University found as a result of global warming the 34°C temperature of the first day of the Brisbane G20 World Leaders Forum was 25% more likely because of global warming and 38°C November days are now 44% more likely than in a world without human-induced climate change.
Investigations into the January heatwave that struck the Australian Open and Adelaide were less clear. While climate change likely played a role in the four days above 41°C that plagued the hard courts of Melbourne Park, there is a small chance that it was due to natural variability alone. For the heatwave with five consecutive days above 42°C at Adelaide, lead author Mitchell Black, also from the University of Melbourne found climate change had increased the odds of that event by 16%.
Land surface temperatures (LSTs) in January 2014 over Australia monitored by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite. Credit NASA
A clearer signal found Dr Alexis Hannart from Buenos Aires in collaboration with CPDN’s Friederike Otto looking at the severe Argentinan heatwave in December 2013 and found a five times increase in the likelihood of such an event occurring in a warming world.
Climate change can also turn down the thermostat as a team led by Dr Michael Grose from CISRO in Tasmania in collaboration with CPDN’s David Karoly and Mitchell Black discovered when they examined an unusual high surface pressure anomaly off the south coast of Australia in August 2014. This pressure system drove cold air into southeast Australia that led to severe late-season frosts across the area with snow falling down to 200m altitude in Tasmania. The research team found climate change doubled the likelihood of such a high pressure system forming.
Staying on the Southern Hemisphere, a research team led by Sue Rosier, looked at extreme precipitation over the North Island of New Zealand that led to severe flooding in July 2014. They found that although still a rare event, such heavy rainfall is now expected roughly once in 200 years while it would only have been a 1 in 350 year event in a world without global warming.
The second study focusing on rainfall, was led by CPDN partner Karim Bergaoui from International Center for Biosaline Agriculture (ICBA), Dubai. This focussed on the lack of rainfall in the Levant region in 2014 during a time that would normally have been the rainy season, and found human-induced climate change did increase the risk of such a severe and unprecedented drought by around 45%.
Studying the severe drought in São Paulo, the largest city in South America with a population of about 20 million, a team led by Friederike Otto found that human-induced climate change was not a major influence. The researchers examined the drought in terms of lack of rainfall, water availability, and water demand. They found the consequences of the drought – which included temporary water shut-offs, a spike in dengue fever cases, and higher electricity prices – were a result of low water availability combined with the numbers of people involved and damage to the infrastructure system. They also concluded that the lack of rainfall in southeast Brazil in 2014 and 2015 while unusual was not unprecedented, with similar dry periods occurring before, with the most recent in 2001.
The Operational Land Imager on the Landsat 8 satellite acquired this natural-color view of the Jaguari Reservoir in Brazil on August 3, 2014. Jaguari is one of five reservoirs in the Cantareira System, which used to supply water to roughly half of the people in the São Paulo metropolitan area before the water crisis was established. Credit: NASA
The second Oxford-led drought study was by Dr Toby Marthews with CPDN’s Dann Mitchell, which focused on the Horn of Africa. They found no influence of human-induced climate change in the lack of rain that year. The researchers did find, however, that human-induced climate change led to higher temperatures and incoming radiation, which made the population more vulnerable in drought events.
- climateprediction.net: Record hot October in Australia at least 6 times more likely due to global warming
05.11.2015 12:58 Uhr
Writing in The Conversation CPDN partners David Karoly and Mitchell Black provide a real-time assessment of the role human-induced climate change and the ongoing El Nino are playing in the record breaking October temperatures in Australia. The magnitude of the monthly mean anaomalies is huge, with 1 deg Celcisus above the previous October record for Melbourne and much of southeast Australia. And this is no co-incidence.
To understand the role of human-induced climate change in these new records they compare simulations of the Earth’s climate from nine different state-of-the-art climate models and the very large ensemble of climate simulations provided by CPDN volunteers for the weather@home ANZ experiments for the world with and without human-induced climate change. Using thus 10 different climate models and over 10,000 simulations for the weather@home experiments alone, they find that breaking the previous record for maximum mean October temperatures in Australia is at least six times more likely due to global warming.
Taking the current El Nino conditions into account as well, the increase in the likelihood of setting a new record is even higher and estimated at at least a factor of ten.
These results demonstrate again that climate change is having a major influence in setting new heat records. They furthermore show that it is now possible to quantify this influence not months after the event but while the event is still unfolding. Quoted in The Age, David Karoly says: “What we’ve done that is really new and exciting is we can now do this analysis as the event is happening. We don’t have to wait.”
- climateprediction.net: Weather@Home Mexico: New Climate Modelling Experiment Launching Soon
25.08.2015 14:24 Uhr
We’re pleased to announce that we will be adding a new regional model to our weather@home regional modelling experiments, covering Mexico and parts of North and South America.
The experiment that will be run with this model will initially be looking at the influence of human-caused climate change on two unusual weather events in 2004/5: the very wet winter season over the northwest of Mexico and the anomalous wet summer over the southeast of Mexico, which was the most active Atlantic hurricane season in recorded history.
This experiment is part of the RECLIM-UK (Regional Climate Projections Initiative Mexico – UK) project, sponsored by the British Council, and will be led by Dr Ruth Cerezo-Mota at the Universidad Nacional Autónoma de México (UNAM).
You can read more about this new region and experiment on the weather@home Mexico page.
Our volunteers can expect to be running Mexico region models in the next couple of months.
Tropical system’s trajectories during the 2005 hurricane season over the Atlantic (data from the National Hurricane Center, image from Wikipedia)