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Thursday, August 27, 2009
The role of Computer in weather forecasting
What is Weather forecasting?
Weather forecasting is the application of science and technology to predict the state of the atmosphere for a future time and a given location. Human beings have attempted to predict the weather for millennia for various reasons mostly been agricultural or military based. Weather forecasts have taken place formally since the nineteenth century.
Britain Grid
How is it done?
A prediction of the weather can be made my collecting quantitative data about the current state of the atmosphere and then using scientific understand about atmospheric processes to attempt how the atmosphere will change over a period of time. This is done by considering the atmosphere to be a fluid and applying equations for fluid dynamics and thermodynamics to attempt to predict how it will change over time. This type of prediction requires a large amount of data to be used in long and complicated calculations, because of this for weather to be predicted quickly and efficiently it must be done so on a super computer.
noaa Super Computer
Numerical weather prediction
Numerical weather prediction models are computer simulations of the atmosphere. They take the analysis as the starting point and evolve the state of the atmosphere forward in time using physics and fluid dynamics. The output from the model provides the basis of the weather forecast. This basically means that a model is built of the current atmosphere, data from this is processed through equations and a new model is created, this new model is generally used to create the forecast and data from it may be inputted into a program to create the kind of weather forecast we see every day on the internet or tv.
How is the data collected?
Data collection
The data used in the calculations for the weather predictions is collected using a variety of techniques, One of these is to use a specialised satalite designed to record data about the weather, The first one of these was TIROS-I, this was introduced in 1960, During the 1970’s buoys were introduced to the seas to help improve the resolution of surface measurements over the sea which until this point was impossible. A variety of monitoring equipment is also placed in multiple strategically placed weather stations which are connected to the offices and computers which process the data and perform the calculations through a network.
Weather forecasting is the application of science and technology to predict the state of the atmosphere for a future time and a given location. Human beings have attempted to predict the weather for millennia for various reasons mostly been agricultural or military based. Weather forecasts have taken place formally since the nineteenth century.
Britain Grid
How is it done?
A prediction of the weather can be made my collecting quantitative data about the current state of the atmosphere and then using scientific understand about atmospheric processes to attempt how the atmosphere will change over a period of time. This is done by considering the atmosphere to be a fluid and applying equations for fluid dynamics and thermodynamics to attempt to predict how it will change over time. This type of prediction requires a large amount of data to be used in long and complicated calculations, because of this for weather to be predicted quickly and efficiently it must be done so on a super computer.
noaa Super Computer
Numerical weather prediction
Numerical weather prediction models are computer simulations of the atmosphere. They take the analysis as the starting point and evolve the state of the atmosphere forward in time using physics and fluid dynamics. The output from the model provides the basis of the weather forecast. This basically means that a model is built of the current atmosphere, data from this is processed through equations and a new model is created, this new model is generally used to create the forecast and data from it may be inputted into a program to create the kind of weather forecast we see every day on the internet or tv.
How is the data collected?
Data collection
The data used in the calculations for the weather predictions is collected using a variety of techniques, One of these is to use a specialised satalite designed to record data about the weather, The first one of these was TIROS-I, this was introduced in 1960, During the 1970’s buoys were introduced to the seas to help improve the resolution of surface measurements over the sea which until this point was impossible. A variety of monitoring equipment is also placed in multiple strategically placed weather stations which are connected to the offices and computers which process the data and perform the calculations through a network.
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How To Watch Satellite TV On Computer Through Internet
It should not come as a surprise to those interested to watch satellite TV on computers that there are already millions doing so. Billions of video streams are watched every single day and people are getting used to watching entertainment media using their PCs online. Basically, the easiest way around it is to power up your computer with a special satellite TV software. We will find out more in this article about this unique software that can enable you to watch satellite TV on computer through the internet and how it compares with the services you are using today.
The software can be downloaded from retailers online and installed quickly. There are clear instruction manuals that take you through a step-by-step approach. Even the most technically challenged can install software in a few steps. The usage is simple since the navigation is user-friendly. Once you are done with the installation, you can instantly check out the TV channels they offer and find the desired TV program you can watch.
If you have been a satellite TV subscriber for the longest time, you would be glad that there are no monthly costs involved at all. The only cost ever is the one time payment for the software which works out to less than $50 for most software versions and brands. When new programs are added, you also need not top up or pay anything extra. These are all included in the software package.
Since the software is receiving free to air TV feeds from FTA TV stations, the TV channels you can watch on computer are entirely free. A quick comparison between satellite and cable TV versus PC satellite TV would reveal that you are catching maybe 700 channels at max with the monthly services but getting access to over 2000 TV channels with the software. This is the one main reason why people love to use the PC satellite TV software.
Other than the software, you do not need extra equipment or hardware, just a good internet connection will do, be it broadband or dial up. Ideally, you should use broadband for faster speeds of TV feed transmission. You also need to have Macromedia Flash and Windows Media Player installed before you can watch satellite TV on computer.
The software has an intelligent user interface that makes it a breeze to use to search and find TV shows to watch. Once you watched it, click to save the TV channel so that you can come back another day to watch. The whole process is as hassle-free as it can get.
Looking at the software side by side with monthly TV services, it outshines services in terms of affordability, the number of TV channels available and the userability. This probably is the reason why more TV viewers, especially the younger folks now watch TV in this way. Learn more about this new technology and how you can make use of PC satellite TV software to watch satellite TV on computer at home from my TV blog.
Davion is a self-proclaimed TV fanatic. Read more on how you can instantly watch satellite TV on PC, tuning into hundreds of LIVE sports channels, news channels and movies for zilch dollar. Also read his wildly popular article on how to watch satellite TV on PC instantly for pennies.
The software can be downloaded from retailers online and installed quickly. There are clear instruction manuals that take you through a step-by-step approach. Even the most technically challenged can install software in a few steps. The usage is simple since the navigation is user-friendly. Once you are done with the installation, you can instantly check out the TV channels they offer and find the desired TV program you can watch.
If you have been a satellite TV subscriber for the longest time, you would be glad that there are no monthly costs involved at all. The only cost ever is the one time payment for the software which works out to less than $50 for most software versions and brands. When new programs are added, you also need not top up or pay anything extra. These are all included in the software package.
Since the software is receiving free to air TV feeds from FTA TV stations, the TV channels you can watch on computer are entirely free. A quick comparison between satellite and cable TV versus PC satellite TV would reveal that you are catching maybe 700 channels at max with the monthly services but getting access to over 2000 TV channels with the software. This is the one main reason why people love to use the PC satellite TV software.
Other than the software, you do not need extra equipment or hardware, just a good internet connection will do, be it broadband or dial up. Ideally, you should use broadband for faster speeds of TV feed transmission. You also need to have Macromedia Flash and Windows Media Player installed before you can watch satellite TV on computer.
The software has an intelligent user interface that makes it a breeze to use to search and find TV shows to watch. Once you watched it, click to save the TV channel so that you can come back another day to watch. The whole process is as hassle-free as it can get.
Looking at the software side by side with monthly TV services, it outshines services in terms of affordability, the number of TV channels available and the userability. This probably is the reason why more TV viewers, especially the younger folks now watch TV in this way. Learn more about this new technology and how you can make use of PC satellite TV software to watch satellite TV on computer at home from my TV blog.
Davion is a self-proclaimed TV fanatic. Read more on how you can instantly watch satellite TV on PC, tuning into hundreds of LIVE sports channels, news channels and movies for zilch dollar. Also read his wildly popular article on how to watch satellite TV on PC instantly for pennies.
computer science
Teach Computer Science without a computer!Computer Science Unplugged is a series of learning activities that reveals a little-known secret: computer science isn't really about computers at all!
Unplugged teaches principles of computer science such as binary numbers, algorithms and data compression through games and puzzles that use cards, string, crayons and lots of running around.
Unplugged is suitable for people of all ages, from elementary school to university, and from many countries and backgrounds. Unplugged has been used around the world for over fifteen years, in classrooms, science centers, homes, and even for holiday events in a park!
And it's free!
You can download Unplugged activities as individual PDF files from their pages on this site, or download a teachers' version of the collection as a single file.
Lots more on this site.
But it's worth browsing this site. You'll find supplementary material for each activity: videos, links, photos, feedback, curiosities and more. We're also working on online games, competitions, links to curricula, and new material. Printed versions of the Unplugged material are available for purchase, and proceeds from sales are put back into the project.
latest computer technology
New Documentation
A new Security Policies document discusses types of security policies that should be implemented in many organizations and provides examples of some security policies.
Agustin's Linux Manual
The Computer Technology Documentation Project is pleased to host the online version of four volumes of Agustin Velasco's Series about Linux
Volume 1 - Installation and Internet.
Volume 2 - System Administration.
Volume 3 - Multimedia and Hardware Installation.
Volume 4 - Networks and Servers.
A Practical approach to EnterPrise Java Beans
A Practical approach to EnterPrise Java Beans - Originally written in Power Point format this guide by Kantimahanti.N.S.Prasad teaches component technology characteristics, standard infrastructure needs , containers, J2EE architecture and its components, EJB model, EJB specifications and roles , types of beans , EJB interfaces and session contexts, life cycles of different beans, and more.
Contents
This site contains computer documentation and information in various technical areas including markup and web languages, operating systems, hardware, programming, and networking. This documentation is suited for beginners to experts. There are various tips, editorials, and weblinks in several categories.
A new Security Policies document discusses types of security policies that should be implemented in many organizations and provides examples of some security policies.
Agustin's Linux Manual
The Computer Technology Documentation Project is pleased to host the online version of four volumes of Agustin Velasco's Series about Linux
Volume 1 - Installation and Internet.
Volume 2 - System Administration.
Volume 3 - Multimedia and Hardware Installation.
Volume 4 - Networks and Servers.
A Practical approach to EnterPrise Java Beans
A Practical approach to EnterPrise Java Beans - Originally written in Power Point format this guide by Kantimahanti.N.S.Prasad teaches component technology characteristics, standard infrastructure needs , containers, J2EE architecture and its components, EJB model, EJB specifications and roles , types of beans , EJB interfaces and session contexts, life cycles of different beans, and more.
Contents
This site contains computer documentation and information in various technical areas including markup and web languages, operating systems, hardware, programming, and networking. This documentation is suited for beginners to experts. There are various tips, editorials, and weblinks in several categories.
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