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Konstantinos

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Everything posted by Konstantinos

  1. Very cold in Greece. -25 degrees C in Florida and 0 in Athens.
  2. Athens does not have snow, but the temperature is 0 degrees C...
  3. I have 100 Euros = 84 British pounds. I want a weather station which I will see its information in my computer. So, I want only the external wireless equipment (which I will put outside of my house) and a cd to install it in windows or linux. What is your suggestion? Thank you.
  4. Tracking a Hurricane using Web Map Service (WMS) (with Matlab): http://blogs.mathworks.com/loren/2011/01/20/tracking-a-hurricane-using-web-map-service-wms/ The topic here: http://forum.netweather.tv/topic/71341-matlab-tracking-a-hurricane-using-web-map-service-wms/
  5. Please connect this topic with my topic tropical low 1, Australia. Thanks.
  6. IDQ20008 SECURITE HIGH SEAS WEATHER WARNING FOR METAREA 10 ISSUED BY THE AUSTRALIAN BUREAU OF METEOROLOGY TROPICAL CYCLONE WARNING CENTRE BRISBANE AT 0655UTC 21 DECEMBER 2011 GALE WARNING FOR NORTH EASTERN AREA SITUATION At 0600 UTC a Tropical Low was centred within 50 nautical miles of latitude sixteen decimal one south (16.1S) longitude one hundred and fifty seven decimal one east (157.1E) Recent movement : southeast at 12 knots Maximum winds : 30 knots Central pressure: 1001 hPa The low is expected to develop into a tropical cyclone in the next 12 hours. AREA AFFECTED Within 50 nautical miles of the centre. FORECAST Maximum winds to 30 knots near the centre increasing to 35 knots by 1800 UTC 21 December, increasing further to 40 knots by 0600 UTC 22 December with very rough seas and low to moderate swells developing. Forecast positions At 1800 UTC 21 December: Within 80 nautical miles of 17.4 south 157.3 east Central pressure 997 hPa. Winds to 35 knots near centre. At 0600 UTC 22 December: Within 110 nautical miles of 18.6 south 157.1 east Central pressure 994 hPa. Winds to 40 knots near centre. REMARKS All ships in the area please send weather reports every three hours. Regular weather observing ships use normal channels. Other ships please use either email to marwxqld@bom.gov.au or fax to +61732200221 or satellite using SAC1241 through Land Earth Station Burum 312 [or 212 as appropriate] via Perth. Next warning will be issued by 1300 UTC 21 December 2011. WEATHER BRISBANE http://www.bom.gov.a...pl?IDQ20008.txt
  7. What does Greece have? Winter or summer? This season I have seen only two showers in Athens. Whats happening? Will this country mature about weather and about everything? Does Greece know that we have December now? Must I be optimistic about next weeks or not? What is your opinion?
  8. In this topic we will discuss about scientific and technological development. Anyone can do an anticipating. In future we will see who is correct. I begin with a short story of most importants facts last century: 1) Theory of relativity. 2) Quantum mechanics. 3) Gödel's incompleteness theorems. 4) Computers, communications and internet. 5) 1969: Manned mission to land on the moon. And my predictions for the next 30 years (2041): 1) Wireless transmission of electrical energy. 2) Colonies on the moon and Mars. 3) Everyone will have quantum computer. 4) 100% electrical society (with electric cars, electric robots, etc). 5) 99.9% accurate forecast (weather) for the next month. 6) A new physics theory, more important than theory of relativity and quantum mechanics. And many others that I will say in future. So what is your opinion?
  9. Speed of light broken again as scientists test neutrino result The speed of light appears to have been broken again after scientists carried out a new set of experiments to test measurements that could require the laws of physics to be rewritten. Scientists have posted new results that confirm measurements made in September that a beam of subatomic particles had travelled faster than the speed of light. The initial result caused widespread debate as it appeared to break one of the most fundamental laws of physics – that nothing can travel faster than the speed of light. The findings have proved troubling for scientists as it goes against Albert Einstein's law of special relativity and opens up the possibility of being able to send information back in time. The researchers behind the experiments, which involved sending neutrino particles 450 miles through the ground from the CERN facility in Geneva to the Gran Sasso laboratory in Italy, have now attempted to rule out one possible source of error. By tweaking the experiment in an attempt to address a potential flaw in their original experiment, they again showed that the neutrons arrived at the Italian site some 60 billionths of a second faster than if they had been travelling at the speed of light. The European Organisation for Nuclear Research, or CERN as it is known, said: "This test confirms the accuracy of the timing measurement, ruling out one potential source of systematic error. "The new measurements do not change the initial conclusion. "Nevertheless, the observed anomaly in the neutrinos time of flight from CERN to Gran Sasso still needs further scrutiny and independent measurement before it can be refuted or confirmed." When scientists announced they had measured neutrinos apparently breaking the speed of light in September the result drew mixed reactions from scientists. Professor Brian Cox, a particle physicist at the University of Manchester and TV presenter, said it would be the most profound discovery in physics for more than a century. Fellow TV presenter Professor Jim Al-Khalili, a physicist at University of Surrey, said that if the findings were proved to be correct, "I will eat my boxer shorts on live TV". Speaking after the most recent announcement, Professor Al-Khalili said: "I am not yet ready to get out my knife and fork. "The results have dealt with some possible errors. There are still a number of other possible errors and uncertainties that they are working on ruling out." The scientists behind the experiments, who are part of the Oscillation Project with Emulsion Tracking Apparatus, or Opera, collaboration, had conducted more than 15,000 measurements over three years before announcing their results. They used 10 microsecond long pulses of neutrinos in the initial experiment, but other scientists pointed out that this could be a potential source of error as the pulses were relatively long compared to the difference in time being measured. In the new test they used shorter pulses of neutrinos, at around three nanoseconds, so they could time the arrival of the neutrinos with greater accuracy. When the Opera team ran the improved experiment 20 times, they found almost exactly the same result. It has been posted to the Arxiv repository and submitted to the Journal of High Energy Physics, but has not yet been reviewed by the scientific community. Fernando Ferroni, president of Italian Institute for Nuclear Physics and spokesman for the Opera consortium, said: "A measurement so delicate and carrying a profound implication on physics requires an extraordinary level of scrutiny. "The positive outcome of the test makes us more confident in the result, although a final word can only be said by analogous measurements performed elsewhere in the world." Other groups of scientists are now also working to repeat the findings independently and a consortium of American, Russian and British scientists are planning to send neutrinos from a laboratory in Chicago to the Canadian border to test the results. Dr Giles Barr, a physicist at Oxford University who is involved the experiments in the US, said: "It's a very intriguing result. The thing that is needed is for more physicists to independently verify what is happening. "They have done a very careful job of this and trying to look at all the individual details that could fake this effect. They couldn't find anything. It is fantastic. "They have brought up some other tests they can do to check what is happening and the checks have shown what you might expect if the neutrinos are travelling faster than the speed of light. "We are going to try to do it ourselves." He added that if proved correct it could have some profound implications for the current understanding of how the universe works. He said: "We have this notion from Einstein himself that particles cannot travel faster than the speed of light – that light itself is the thing that travels the fastest. "The profound thing that could happen here is that some people in a very fast spaceship could actually observe these neutrinos leaving after they have arrived in the place where we have seen them. "In other words time could be travelling in reverse. It is a very mind boggling thing." http://www.telegraph...ino-result.html
  10. It will be called Kenneth and it will become tropical storm tonight or Sunday.
  11. 1) Is it possible to become hurricane? 2) Is it possible to come in Greece? 3) Why can't I see it here: http://www.wunderground.com/tropical/ ? And an article: Warming may bring hurricanes to Mediterranean (Reuters) - Global warming could trigger hurricanes, or tropical cyclones, over the Mediterranean sea, threatening one of the world's most densely populated coastal regions, according to European scientists. Hurricanes currently form out in the tropical Atlantic and rarely reach Europe, but a new study shows a 3 degrees Celsius (5.4 degrees Fahrenheit) rise in average temperatures could set them off in the enclosed Mediterranean in future. "This is the first study to detect this possibility," lead researcher Miguel Angel Gaertner of the University of Castilla-La Mancha in Toledo, Spain, told Reuters on Monday. "Most models in our study show increasing storm intensity and if you combine this with rising sea levels, as are projected, this could be damaging for many coastal settlements." As well as being home to millions, the Mediterranean coast is also a major centre of tourism, which would be under threat. Factors influencing hurricanes include warm sea surface temperatures and atmospheric instability. In the past, they have been confined to a limited number of regions, such as the north Atlantic and north Pacific, where they are known as typhoons. Recently, however, they have been forming in unusual places, which Gaertner sees as a clear danger signal. In 2004, Hurricane Catarina formed in the south Atlantic and hit land in southern Brazil. A year later, Hurricane Vince formed next to the Madeira Islands and became the first to make landfall in Spain. In a paper published in the American Geophysical Union Journal, Gaertner and colleagues from the Max Planck Institute for Meteorology in Hamburg, Germany, used a range of regional climate models to assess the chance of similar events in the Mediterranean. They found rising temperatures pointed to increasing storm intensity and, in the case of the most sensitive computer model, a likelihood of strong hurricanes. Gaertner said a large number of uncertainties remained and it was not yet possible to say which parts of the Mediterranean would be hardest hit. He also believes there is time to avoid the worst-case scenario by working to limit global warming. "This is a big threat but I think we have time to avoid it, if we cut emissions of greenhouse gases," Gaertner said. A United Nations climate panel, drawing on the work of 2,500 scientists, said this year that the "best estimate" was that temperatures would rise 1.8-4.0 Celsius this century. Most experts say emissions of greenhouse gases, mainly from burning fossil fuels in power plants, factories and cars, are the principal reason for rising temperatures. http://uk.reuters.co...666597920070716
  12. Hi all. I have a friend who lives in Cancun Mexico. She will send me photos and videos during Rina. When she sends me I will upload them here directly. I have the first two photos:
  13. Can someone explain to me what weather machine is?
  14. Tropical Storm Rina is strengthening a bit over the western Caribbean Sea, centered at midday about 190 miles southwest of Grand Cayman Island. Rina may become a Category 1 hurricane by Tuesday Night. The storm is moving to the northwest, and a turn to the west-northwest is expected later today. The government of Honduras has discontinued the Tropical Storm Watch for that country. Interests in Belize, the east coast of the Yucatan Peninsula, and the adjacent islands should monitor the progress of Rina. For storm information specific to your area, please consult the products issued by your country's National Meteorological Service. Rina is not a threat to the United States at this time. Source: NOAA NWS National Hurricane Center
  15. This demo shows how to track a hurricane using data from a WMS server. Typically web sites containing weather imagery may contain a visual animation of GOES imagery for any given hurricane. For example, a typical time-sequenced imagery of Katrina from a web site hosting weather imagery is shown below in an animated GIF. Note that this animation shows the data in an unprojected geographic coordinate system. However, you may wish to view the data in a projected coordinate system, and overlay the hurricane track and the size of the hurricane, at any given point in time. You can use MATLAB® to analyze images from a WMS server and track a hurricane's position and area. This demo will show you how to obtain the WMS imagery from a web site using features from the Mapping Toolbox™, analyze the imagery using features from the Image Processing Toolbox™, and use parfor from the Parallel Computing Toolbox™ to parallelize some computations for performance improvements. In particular, this demo will show you how to: obtain WMS imagery at a particular time-step from a web site, view the imagery in a projected coordinate system, overlay the hurricane's track, use the parfor command to parallelize computations of the convex hull, boundary, and centroid of the hurricane, overlay those region properties onto the WMS basemap, and animate the sequence. http://blogs.mathwor...loren_hurricane
  16. Hi all and thank you for your replies. I understand that it is difficult to have topics with languages different to English, but I think we can solve this problem with people who know other languages (not only English), and do them moderators in appropriate topics. But I understand this is very difficult, and it is not my main suggestion. My main suggestion is to do the worldwide forum more organized. First we can create subforums in this: http://forum.netweather.tv/forum/112-weather-around-the-world-general-discussion/ about continents (Asia, Africa, America, Europe and Oceania), and after that in each continent, we can create subforums about countries, and in each subforum, a member can create a new topic about weather in a town in his country. For example if I want to create a topic about weather in Patras, I must go in http://forum.netweather.tv/forum/112-weather-around-the-world-general-discussion/, after in Europe, after in Greece, and finally I can create a topic about weather in Patras. This is my main suggestion. I understand that it is difficult to create about 250 subforums for all countries, but this is not a reason for not doing a suggestion. Thank you.
  17. Hi all. I want to do a suggestion to netweather team. I believe this suggestion will be the forum more international. In this forum: http://forum.netweather.tv/forum/112-weather-around-the-world-general-discussion/ I suggest to create subforums about weather in each country. For example, we can create a subforum about greek weather, in which we will create new topics about greek weather (extreme weather in Athens, weather in Crete, weather in mount Olympus in Greece, etc) and in which we can discuss in greek language. What is your opinion about this?
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