Diseases, Conditions, Syndromes

Computer model shows how to better control MRSA outbreaks

A research team led by scientists at the Columbia University Mailman School of Public Health report on a new method to help health officials control outbreaks of methicillin-resistant Staphylococcus aureus, or MRSA, a life-threatening ...

Diseases, Conditions, Syndromes

Keep your guard up against West Nile virus

Use insect repellent and wear protective clothing when you're outside in the evening— even when it doesn't feel like mosquitoes are biting.

Health

Ambulances respond more slowly in summer and winter

Services are vulnerable to disruptions from both hot and cold weather, with the speed of ambulance response beginning to suffer when the mean daily air temperature drops below 2°C or rises above 20°C. This is thanks, largely, ...

Psychology & Psychiatry

Mother-daughter research team studies severe-weather phobia

No one likes severe weather, but for some just the thought of a thunderstorm, tornado, hurricane or blizzard can severely affect their lives. When blood pressures spike, individuals obsessively monitor weather forecasts and ...

Psychology & Psychiatry

Weather worries can threaten a child's mental health

(HealthDay)—The monstrous tornado that devastated Moore, Okla., on Monday, killing dozens of adults and children, is a stunning example of violent weather that can affect a child's mental well-being.

Diseases, Conditions, Syndromes

NIH study sheds light on role of climate in influenza transmission

Two types of environmental conditions—cold-dry and humid-rainy—are associated with seasonal influenza epidemics, according to an epidemiological study led by researchers at the National Institutes of Health's Fogarty ...

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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 informally for millennia, and formally since at least the nineteenth century. Weather forecasts are made by collecting quantitative data about the current state of the atmosphere and using scientific understanding of atmospheric processes to project how the atmosphere will evolve.

Once an all human endeavor based mainly upon changes in barometric pressure, current weather conditions, and sky condition, forecast models are now used to determine future conditions. Human input is still required to pick the best possible forecast model to base the forecast upon, which involves pattern recognition skills, teleconnections, knowledge of model performance, and knowledge of model biases. The chaotic nature of the atmosphere, the massive computational power required to solve the equations that describe the atmosphere, error involved in measuring the initial conditions, and an incomplete understanding of atmospheric processes mean that forecasts become less accurate as the difference in current time and the time for which the forecast is being made (the range of the forecast) increases. The use of ensembles and model consensus help narrow the error and pick the most likely outcome.

There are a variety of end uses to weather forecasts. Weather warnings are important forecasts because they are used to protect life and property. Forecasts based on temperature and precipitation are important to agriculture, and therefore to traders within commodity markets. Temperature forecasts are used by utility companies to estimate demand over coming days. On an everyday basis, people use weather forecasts to determine what to wear on a given day. Since outdoor activities are severely curtailed by heavy rain, snow and the wind chill, forecasts can be used to plan activities around these events, and to plan ahead and survive them.

This text uses material from Wikipedia, licensed under CC BY-SA