Climate change,Climate change is a global phenomenon that is caused by increased levels of carbon dioxide, ozone and other greenhouse gases in the atmosphere. This leads to a rise in temperatures around the world.
What is climate change?
Climate change is the result of natural processes and human activities that have occurred over a long period of time. These include changes in the atmosphere, oceans, land surface, ice cover and habitats.
Climate change refers to any systematic and sustained variation in the climate over time. Scientists use several definitions for this term:
- Changing average weather conditions on a large scale across many years (for example, warmer summers or more frequent heat waves)
- A significant change lasting for more than ten years (for example, sea-level rise due to melting ice caps combined with rising ocean temperatures)
- The effects on the environment resulting from these changes
is climate change
Is climate change a thing? Yes. We know that the Earth’s climate has always changed. In fact, it is changing right now! And will continue to do so in the future—which is why it’s important to understand what causes climate change and how we can adapt to it.
However, what makes our current situation unique is that humans have contributed significantly to this phenomenon through our actions (such as burning fossil fuels). In other words: yes, there are natural factors involved in causing climate change—like volcanoes erupting or El Niño events; but at the same time there are anthropogenic ones as well—that is, human-induced changes caused by human activities such as emitting greenhouse gases into the atmosphere or destroying rainforests.
the climate change
Climate change is the change in global or regional climates over time. It can have a negative impact on our health, food security, water security, and economic growth. Global temperatures are rising over time due to natural processes and human activities such as industrialization. The effects of climate change include flooding, droughts, extreme weather events like heat waves and hurricanes (tropical cyclones), wildfires and severe storms that cause billions of dollars’ worth of damage each year.
what is climate change
Climate change is a long-term shift in the weather patterns of the earth. It’s caused by an increase in global temperatures and it can have serious consequences for human life, as well as our environment.
The main cause of climate change is human activity—specifically, our use of fossil fuels (coal and oil) for energy production. When we burn these fossil fuels to generate electricity or drive cars, for example, carbon dioxide emissions are released into the atmosphere which then causes greenhouse gases like carbon dioxide to build up over time—this leads to higher concentrations of CO2 in our atmosphere than normal which raises global temperatures through the greenhouse effect (more specifically called radiative forcing).
the causes of climate change
The causes of climate change are complex and the subject of much debate. Here’s what we know so far:
- CO2 – Carbon dioxide is a greenhouse gas, which traps heat in our atmosphere and contributes to global warming. It can be produced by burning fossil fuels like coal or oil, but also by respiration (breathing) if you’re alive!
- Ocean currents – The earth’s oceans circulate water around the world through currents that move in different directions depending on where they’re located on earth. This leads to uneven heating of land masses, which contributes to climate change as well as ocean acidification caused by rising levels of CO2 dissolved into seawater when it absorbs more carbon from air pollution released by human activities like driving cars or burning fossil fuels for electricity generation.*
- Greenhouse gases – Greenhouse gases trap heat within Earth’s atmosphere and warm our planet up significantly compared to what would happen without them present at all times; even though most greenhouse gases don’t absorb visible light energy directly from sun rays entering Earth’s atmosphere (a process called radiated absorption),
- they still retain solar radiation long enough for some portion thereof before it escapes back into space where its job ends up being done.* Volcanoes – When volcanoes erupt they spew out tons upon tons upon tons of dust particles high up into Earth’s stratosphere where their tiny size prevents them from falling back down again right away due instead because these particles reflect sunlight back down onto Earth instead (an effect known as albedo).
- This means less sunshine reaching us below ground level where plants need light energy coming down through photosynthesis in order for photosynthesis itself take place.* Air pollution – Air pollution like smoggy skies over big cities produce
the definition of climate change
What is climate change?
Climate change is the long-term shift in weather patterns, with a global rise in temperature and changes in precipitation. The term “climate change” refers to all changes in climate – from the slight to the extreme.
What causes climate change?
The main cause of climate change is human activity, namely burning fossil fuels (coal, oil and natural gas). Burning fossil fuels releases greenhouse gases such as carbon dioxide into the atmosphere that trap heat and warm up Earth’s surface. This can lead to melting ice sheets, rising sea levels, increased heat waves and droughts.
With more than one billion people living in coastal areas worldwide it’s no surprise that this issue has become so important with many governments around the world taking steps towards curbing their carbon emissions after 2015 when 195 countries agreed on an international deal called The Paris Agreement which aims at keeping global warming under 1.5 Celsius above pre-industrial levels by cutting down on fossil fuel consumption
Climate change is happening
It’s real. Climate change is happening now. The Earth’s climate has always changed, but we’re seeing changes faster than ever before and the weather is getting more extreme.
Climate change isn’t only about the planet warming up—it affects local communities too. For example, the increase in severe weather events like floods and droughts can damage homes and crops, putting people at risk of hunger or illness.
The climate has always been changing throughout history but now human activity is causing these changes to happen more quickly than they would naturally
The world’s climate has always changed
The world’s climate has always been changing. Over the past 10,000 years, the planet has experienced both rapid warming and cooling periods. During this time period, scientists have identified four major shifts in global temperatures:
- The end of the last ice age about 10,000 years ago
- A cooling trend that began about 2,000 years ago
- A very rapid rise in global temperatures starting around 1850 (the beginning of industrialization), and continuing through today (although there were dips along the way). Scientists refer to this as “modern warming” or “industrial climate change.”
- An even more dramatic rise in temperature since 1990 (since emissions from fossil fuels have increased dramatically).
Is climate change happening now?
Yes, climate change is happening now. All over the world and in every corner of the globe, people are experiencing changes to the climate that affect their lives.
The effects of climate change include:
- More intense droughts and flooding
- Increased intensity of storms (such as hurricanes)
- Rising sea levels and increased storm surges from coastal areas due to melting ice caps
Climate change facts and figures
- The average global temperature has risen by 1.5°F since 1880
- The Arctic is warming at twice the rate of the rest of the world
- The amount of carbon dioxide in the atmosphere has increased by 40% since pre-industrial times
- The amount of sea ice in the Arctic has decreased by 20% since 1980
The evidence for rapid climate change is compelling.
We can be confident that climate change is happening now and will continue to affect us all. Here are some examples:
- Global temperatures are rising. In 2016, global sea ice was at its lowest extent ever recorded by satellites—a sign of a warming planet.
- The Arctic is among the most vulnerable parts of the planet because it’s warming twice as fast as other regions (and melting permafrost).
- Climate change can cause more extreme weather events such as droughts, floods, heat waves and hurricanes which threaten human health and livelihoods through severe impacts such as hunger or disease outbreaks from contaminated water supplies
Global temperatures are rising.
The earth’s temperature is rising.
The earth’s temperature is rising at an unprecedented rate.
The reason for this is climate change.
The Arctic is among the most vulnerable parts of the planet.
The Arctic is among the most vulnerable parts of the planet. Since 1900, temperatures in Alaska have increased by 5 degrees Fahrenheit, and those in Greenland by 6 degrees. The average global temperature has risen 2 degrees Fahrenheit since 1900, with 80 percent of that increase occurring since 1975.
The Arctic is home to many species, including polar bears and seals; its indigenous people depend on it for food and livelihood; it has a very short growing season; and as we learned from last summer’s wildfires in Alaska’s tundra region (see video), grasses burn easily even when temperatures are milder than normal because they have been dried out by warmer winters that lack snowpack.
In 2016, global sea ice was at its lowest extent ever recorded by satellites.
It’s true. Ice is melting, and climate change is happening.
Scientists have been observing this increasing rate of ice melt for decades, but in 2016, global sea ice was at its lowest extent ever recorded by satellites. In fact, NASA reports that the Arctic sea ice reached its annual minimum on September 11—about 1 million square miles (2 million square kilometers) less than the average from 1981 to 2010.
While these numbers can be difficult to grasp, it’s worth noting that this year marks only the third time that satellite observations have tracked such low levels of sea ice in both northern and southern hemispheres simultaneously—and it’s only happened twice before since 2000: 2008 and 2012.
Shifting climate patterns could force reindeer, caribou and muskoxen farther north in search of food.
The Arctic is warming faster than any other region on Earth, and the effects are already being felt by the animals that live there. Reindeer, caribou, and muskoxen are migrating farther north in search of food during the summer months — a phenomenon called “range extension” that’s been observed for more than 50 years.
Since then, these species have been moving into new habitats such as areas with low snowpack and fewer ponds for water. They’re also adapting to changing temperatures by shifting their time spent grazing in spring or winter seasons.
These animals are important to the people who live in the Arctic, so we need to help them find ways of adapting.
Read More : Greenhouse gas emissions