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Can you differentiate "climate" from "weather"?
This is an issue that comes up a lot in this forum's debates about global warming, so I thought I'd drop the definitions in here...
Climate is the description of average weather over a period of time, most commonly 30 years.
Weather is the state of the atmosphere with respect to heat or cold, wetness or dryness, calm or storm, clearness or cloudiness, varying over short periods of time.
The most common error made in posts on this site are those that fail to recognize that climate is weather averaged over a period of 30 years. There are many comments suggesting that a cold winter indicates a climatic trend. It doesn't. Climate trends require decades to be revealed and verified. When summer arrives, we'll surely see GW advocates pointing to record highs as evidence. They will be just as wrong as those currently using the opposing argument.
There is also an assumption on the part of many that local and regional weather correlates to global weather conditions. If you're experiencing record-breaking weather of any kind, it's not relevant to what's happening in other parts of the world, nor does it mean anything with respect to climate trends. As advertisers like to say, "Your results may vary."
12 Answers
- BaccheusLv 71 decade agoFavorite Answer
Actually we should differentiate between weather, "climate" and global climate change.
Weather involves heat moving from one place to another within the global system. When arctic air moves out of the arctic, some other place gets that air (burrr!) but other warmer air replaces it in the arctic.
Global climate change refers to changes in the total amount of heat within the system. A number of things change that total heat, including changes in the sun, changes in the earth's orbit, ocean currents patterns and changes in the chemical makeup of the atmosphere.
"Climate" though is regional. One place is a rain forrest and another a desert. Regional climates do change due to global climate change, but not all in the same way. Should arctic ice melt fast enough, for example, to desalinate the Atlantic enough to slow the heat conveyor, the NE US and NW Europe will get much colder while the tropics gets even hotter.
- wokwiczLv 45 years ago
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- coldfuseLv 71 decade ago
We even see this from the scientific community:
"Climate change is making itself felt in terms of day-to-day weather in the United States," says Gerald Meehl, a researcher at the National Center for Atmospheric Research (NCAR)....
While the article is about record highs and lows over time, comments like this certainly gives license to anyone to make comments about the day-to-day weather.
- 1 decade ago
Weather is a momentary thing, the weather can change drastically in a matter of minutes.
Climate is an average of the temperatures over a long period of time.
ie: arctic, temperate or tropical climate.
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- TrevorLv 71 decade ago
Absolutely spot on, agree with you 100%.
Some people make genuine errors when confusing weather with climate - and that's both understandable and acceptable. Unfortunately there is a group that should know better, but when it suits them they will use weather events to 'prove' their point. It shows contempt for other users of this forum and demonstrates either a) a willingness to lie and deceive on their part or b) a level of ignorance which should preclude them from passing comment.
- Anonymous1 decade ago
I think "climate" refers to the weather conditions at certain location, which could be a town or the whole earth. Weather is not a reference to any place in particular unless you specify that with or commentary.
- BBLv 71 decade ago
Why "30" years? Why not more if we have the data? I believe that surface temperature data collection has been going on for quite some time, though NOAA (in this country) has done a poor job of siting and maintaining the measuring equipment.... along with the issue of data-tampering.
- ?Lv 51 decade ago
climate is for when you want to go on vacation, and the agent says it will be in between 75 and 90, and then the weather is when you get there and it's 32 and snowing !
Source(s): me - 1 decade ago
You are absolutely correct. But I see this same error (short term variability – weather) being used both to “prove” or “disprove” global warming, along with the local vs. global error. Both are flatly wrong.
- DavidLv 71 decade ago
Good explanation. Unfortunately, good explanations get ignored if the person you're trying to teach isn't interested in learning.