How can we predict weather?

Question

how???

Answer 1

i dont know

Answer 2

Somewhere I read that man can accurately say where the Venus will be (in its orbital path around the Sun) after 500 years but cannot say what will be the weather after 24 hours at a particular place.It is so complicated.An atom bomb tested secretly by a nation in Pacific ocean can change the already predicted course of a cyclone which forms over Bay of Bengal and crosses India's east coast.Now you can imagine how weather at a place is interlinked with the weather conditions of other places on the Earth.

Answer 3

Weather is predicted using mathematical models that incorporate all the physical laws that govern how air moves. It's very complicated, and while I'm a meteorologist, I don't pretend to know a lot about everything that goes into them. I just use them to forecast the weather. Essentially, the atmosphere is so complex that it is difficult to forecast past a certain time frame in terms of the weather. In order to forecast accurately, you would need observations from every single infinitely small point on the planet, as well as computers fast enough to show us what is going to happen at every single infinitely small point in the future. This is never going to happen, so weather prediction will never become 100% accurate. The atmosphere is also a system of chaos, so something that happens at a small point in space and time now that wasn't predicted by the weather models can affect things that happen days from now (you've heard of the butterfly in Brazil causing a tornado in Texas - that's the chaos theory).

The mathematical equations that govern the movement of air are extremely complicated. They involve endless amounts of physics, calculus, advanced calculus, and ability to sit there and digest and understand how such extremely complex equations are derived (as well as the willingness and desire to continue looking at them every day for your career). Without this very complex math and physics, we still would be quite unsure what was going to happen with the weather as soon as tonight or tomorrow.

Answer 4

First, I have to ask you to refine your question. Predict how far into the future? We can currently predict with about 50% accuracy three days or so into the future. Look at the work of someone named Lorentz. He proved something called the "Butterfly Effect". This basically is a mathematical proof that complex systems can give radically different outcomes to very small differences in starting conditions. Lorentz theorized that a butterfly flapping its' wings on the other side of the world could be directly responsible for the location and intensity of a hurricane a month later. Not totally of course but that input when it winds its' way through all the interactions of air and sun and earth and water could be the decisive factor in the hurrican having that particular intensity on that particular day on that particular course.

Until we create models that account for inputs so tiny and so numerous and measure them, it will be difficult to go much beyond several days into the future with any accuracy much over 50%, a coin toss. It is true that we can predict TRENDS but not weather for a given day.

Think about this sensitivity when you read about global warming. We could get very large differences from changes that we now consider to be small.

Answer 5

The short-term weather forecasts that most people watch on the nightly news, as well as predictions of climate changes over weeks and months, all originate from reports and charts provided by the National Weather Service,
They get the info from satellites,that in turn track the air stream from the polar caps,since most of the earth is water,there are constant changes as the air stream travels,based on air density and moister we are able to short term predict from several monitering stations.we kkow when winds are high to alert for hurricans and cool artic air is approaching,as well as warm

Answer 6

The same way they do it today to predict the weather. Add up the temperatures, weather conditions, etc for that day over history and then get its average.

So say on Jan. 26, 1900 it was 32 degrees....then add that to 1901, 1902....all the way up to 2006. Divide it by 106 yrs and you'll have the average temperature for that day. More or less this is how weathermen get their numbers. They use more graphs and stuff but more or less.

Answer 7

meteorologists send up weather balloons
the weather balloons take readings such as...temps
humidity
wind strength and
direction
they also use satellites to view storms
another thing they do is use barometers they measure atmospheric pressure
different atmospheric pressure measurements indicate different types of weather

Answer 8

look outside, feel the air, look at the thermometer, watch the weather channel-

Answer 9

Look at the sky

Answer 10

guess not in this life...we'll always have an umbrella and it wont rain)

Answer 11

Look at satelites