Understanding The Difference Between Weather And Climate
Weather and climate are one of the most talked about topics, no matter where you go or who you talk to. For some reason, though, there is still a lot of confusion among many people about the difference between the two.
In fact, for a vast number of people, weather and climate are one and the same thing. For those in the know, this can be incredibly frustrating, even infuriating. This is especially true for weather enthusiasts, meteorologist, and climatologists.
To be fair though, if weather and climate are not your passion, it is easy to get confused. The two terms are often used interchangeability by those who are supposed to know better, sometimes even by the mainstream media.
What we are going to try and do in this article, is to highlight the difference between weather and climate, as well as the factors that make them different from each other.
What Is The Difference Between Weather and Climate?
Weather is the actual atmospheric conditions you experience at any given time at any given location. Climate, on the other hand, is the weather patterns and averages of a region that are established over a long period of time, usually measured over a minimum of 30 years or more.
However, we need to be more specific to really understand the difference between the weather and climate. This means we need to look at the specific factors that determine the weather and climate.
The Role Of Time, Patterns, and Averages In Determining Weather And Climate
The Role Of Time In Weather And Climate
The biggest difference between weather and climate can be summed up in one word: Time. As I already mentioned, the weather is measured over a relatively short period of time, ranging from minutes to a day or two.
Climate takes much longer to establish weather patterns and averages, that is used in forecasting models to determine future atmospheric conditions.
The standard time to determine the climate (or climate change) of a region is 30 years. That is 30 years of weather data taken daily to establish weather pattern and averages.
But what are these weather patterns and how are they established?
Weather Patterns In Terms Of Weather And Climate
Weather patterns are specific atmospheric conditions that stay the same for a prolonged period of time.
In terms of weather, we look at a pattern of atmospheric conditions that last from a number of days to a couple of weeks. (Examples include long hot, dry spells or prolonged periods of cold and wet weather.)
In terms of climate, we observe weather patterns that are typically associated with specific seasons of a particular country or region. It may even establish a tendency or change in weather patterns over years.
In other words, patterns associated with weather are established over a short period of time (days and weeks), while patterns associated with climate are formed over years (from decades to sometimes even centuries).
(The cold, snowy winters and warm, humid summers of Pennsylvania is a perfect example of the former. The gradual increase in global temperatures over the past few decades is an example of the latter.)
Averages And The Elements Of Weather And Climate
The elements weather and climate use, are the same ones. A few examples include temperature, rainfall, wind tendencies, humidity, solar radiation, barometric pressure, etc.
The averages calculated for each of these variables/elements, however, are used differently when applied to the weather and climate respectively.
Some of the averages measured to determine the weather and climate conditions include:
1) Temperature Averages
Temperature, specifically temperature averages, is one of the main talking points in recent years due to the impact and concerns regarding Global Warming.
In terms of weather, calculated temperature averages are mostly used in forecasts to indicate how warm or cold it will be in the coming days or week.
(Short-term temperature averages are also calculated and stored for historical weather data.)
In terms of climate, it is used to help determine how warm it will be during a specific season or time of year in a particular region.
2) Rainfall Averages
Rainfall is another important variable or element that plays a major role in determining atmospheric conditions over the short and long term.
In terms of weather, recorded rainfall averages are used in forecasts to indicate the probability and amount of rain to fall in the coming days or week.
(Short-term rainfall averages are also calculated and stored for historical weather data.)
In terms of climate, it is used to help determine how much or little precipitation is expected during a specific season or time of year in a particular region.
3) Wind Speed, Direction And Frequency Averages
Wind is not just a result of weather and climate, but a main driving force of weather systems across the world. Therefore, it is crucial to constantly keep a record of winds and the resulting weather conditions, wherever and whenever it occurs.
In terms of weather, recorded wind speed, direction & frequency averages are used, not only in forecasts to indicate wind tendencies in the coming days or week but also the resulting weather events.
(Short-term wind averages are also calculated and stored for historical weather data.)
In terms of climate, it is used to help determine how wind averages will influence and drive weather systems in the future during a specific season or time of year in a particular region.
4) Humidity Averages
Humidity is not such an obvious and tangible weather element or variable as temperature, rainfall and wind tendencies, but plays just as an important role to the meteorologist and climatologist.
Without repeating everything that was already said about the other variables, the same applies to the recording and using of humidity averages.
If you are unfamiliar with humidity and the role it plays in weather and climate, you can find all the information in this article.
These are just a few examples of how the averages of weather elements are used in different ways by the weather and climate.
It can be a bit confusing, and you may have to read a few sentences and statements a couple of times before it makes.
It will be worth it though, as it will help you to get a better understanding of how these different averages, are used differently in the context of weather and climate.
Expectations And Outcome
There are a LOT of similarities between weather and climate, as you would have noticed throughout this article.
It is no wonder and should come as no surprise that so many people are completely confused about the difference the two, or even concluded that they are essentially the same thing.
There is one very effective way of telling the difference between weather and climate, which was a brilliant explanation for me.
Full disclosure first, these are not my words. I read it in another article while researching a specific subject, and will provide credit as soon as I can find it again. Here it is....
"Climate is what you expect. Weather is what you get."
That sums it all up for me! I will try and quickly explain it in my own words if this statement doesn't make complete sense to you.
Decades of weather data gathering and calculations help meteorologists to create a prediction of what the general weather conditions will be like during particular seasons or how it will change in the future.
In other words, they create an expectation.
When present-day weather forecasts are made, you experience the actual weather on a specific day or during a particular season. It may be in line or deviate from what the general climate conditions for the region may indicate.
This is the actual weather outcome or "what you get".
This should help to make things more understandable. It will also help to explain the heading of this section. The best way I can capture it in my words...
"Climate creates an expectation. Weather is the actual outcome."
These two explanations will help to summarize and define the real big difference between weather and climate. I think any more explanations or examples will just cause more confusion than really helping.
I hope after reading this article, you will have a clear understanding of the difference between weather and climate. I also highlighted why these differences exist and the different purposes each one serves.
Yes, they are similar in many ways. They can also seem to contradict each other, which is not the case. As I just said, they serve very different purposes.
The most important thing to remember is that, although they are different and serve different purposes, they are bot part of the same overarching study of meteorology. They work to compliment, and not work against each other.
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Until next time, keep your eye on the weather!