The agreement aims to lower carbon emissions in countries across the globe in order to limit our global warming to 2°C instead of 4°C, which is our current track of warming.
Limiting warming to 2°C may not seem like a lot, but it would decrease the amount of climate change impacts currently plaguing the world, including sea level rise, extreme weather and extreme heat.
There are still some climate change effects that won’t be completely eradicated, including ocean acidification. A lot of global heat is trapped in the oceans, and decreasing our emissions won’t decrease the current heat in the oceans. But, of course, it would help the overall rate of warming.
Because of the signing, world leaders are helping combat climate change by embracing renewable energy and carbon trading.
The main aim is to keep a global temperature rise this century well below 2 degrees Celsius and to drive efforts to limit the temperature increase even further to 1.5 degrees Celsius above pre-industrial levels. Additionally, the agreement aims to strengthen capability to deal with the impacts of climate change.
To reach these ambitious and important goals, appropriate financial flows will be put in place, thus making stronger action by developing countries and the most vulnerable possible, in line with their own national objectives.
Day three in the Earth Week 2016 series. Read day one and day two here.
So many things indicate that this planet is changing — from rapidly acidifying oceans to extreme weather — but it all can be boiled down to the greenhouse gas emissions we humans have emitted into the atmosphere.
Here’s how we know the climate is changing, thanks to my very own WXshift and Climate Central‘s indicators of a warming climate:
Ocean acidification occurs when CO2 emitted into the atmosphere from the burning of fossil fuels reacts with salt water from the ocean and forms an acid.
Acidic oceans aren’t just bad for corals — at the bottom of the food chain, plankton have trouble adapting to warming and acidifying seas, which can cause an ecological collapse, which would severely alter the ocean’s food web and how we humans get our seafood.
Arctic sea ice is disappearing over time. A warming Arctic poses problems for polar bears hunting for food, as you may have heard, but it also has an important feedback role in global warming. Because sea ice is much more reflective than the dark ocean (because it’s white), it usually reflects sunlight away from the planet. When the ice melts, the sunlight is absorbed into the ocean, increasing warming. You can see Arctic ice melt in the video below.
Rising temperatures are causing global sea levels to rise through two primary mechanisms. Water expands as it warms and this thermal expansion causes water levels to rise. Hotter temperatures are also melting land ice, like glaciers and polar ice caps, which adds more water to the ocean.
El Niño is a stretch of unusually warm water that forms off the coast of Peru and stretches across the equatorial Pacific every 3-7 years. The opposite phase, La Niña, displays a similar pattern but with cooler-than-normal water. These oceanic shifts conspire with the atmosphere to alter global weather by increasing the odds of drought, heavy rain and cool or hot temperatures in different parts of the world.
El Niño also contributes to record heat, as seen in this graph below.
U.S. wildfires are burning longer (and more frequently). The main cause of the increase in large wildfires in the Western U.S. is because of snowpack decline — because there is less snow, the area is more dry, and therefore more susceptible to going up in flames.
An increase in wildfires also decreases air quality, a serious health consequence.
Land ice is melting. Arctic sea ice isn’t the only ice on the decline. Land ice, including glaciers and polar ice caps, is trending down across the globe, the melt of which contributes to sea level rise.
As with Arctic sea ice, land ice is reflective, so the more the better to reflect sunlight away from Earth.
Snow cover is decreasing. When white snow disappears because the global temperature has risen, less sunlight is reflected off the planet, similar to what is happening with Arctic sea ice. In the Northern Hemisphere, snowpack has plummeted, which is not only a bummer for skiers, but for people who drink water (i.e. EVERYONE). Snowpack, especially in western states, provides runoff water that fills water tables and aquifers.
In the atmosphere:
Carbon dioxide is on the rise. Carbon dioxide, the pollutant we emit into the atmosphere from burning fossil fuels (and the primary greenhouse gas driving climate change), is on the rise. This chart says it all.
The global temperature is rising, too. The rise in CO2 (see above) sets off many other climate indicators — in fact, it contributes to all of them, including the global temperature. Because of increased CO2 in the atmosphere, heat gets trapped, driving up global temperatures.
“The lasting legacy of climate change will be heat. The land, the oceans, all of it. It’s the tie that binds and while the global average temperature is the defining metric, the increasing incidence of heat waves and longer lasting extreme heat is how the world will experience it.” – Climate Central
And there you have it! Ten indicators of a warming world. The takeaway from this is how everything is connected. A warming globe decreases snowpack, which increases the risk of wildfires. More CO2 in the atmosphere leads to more CO2 in the oceans, which melts sea ice and increases ocean acidity.
Everything in this world is connected, which is an important concept to learn when thinking about climate change impacts.
Day two in the Earth Week 2016 series. Read day one here.
Money talks.. or so they say.
And it certainly helps with conservation efforts across the globe, as a little money can go a long way.
And that’s why Apple has paired up with 27 apps to send 100% of proceeds from app purchases and in-app purchases to the World Wildlife Fund from April 14 through 24 in a campaign called “Apps for Earth.”
Causes include forest conservation, wildlife conservation, sustainable food development, ocean preservation, fresh water protection, and combatting climate change.
The apps aren’t just limited to conservation efforts, as they include games from Kendall and Kylie Jenner, Disney, Jurassic World, and Marvel, as well as Angry Birds, Candy Crush, Cut the Rope and line.
Lisa Jackson, former EPA director and now Apple’s VP for environment & social initiatives, told the Washington Post:
“This is yet another example of our work to help the planet, and it addresses something we hear a lot of from our customers. They love the work Apple is doing as a company, but they want to be engaged in this mission of leaving the planet better than we found it.”
So if you were waiting to buy those extra Angry Birds lives, do it now! And help save the planet one app at a time.
Day one in the Earth Week 2016 series. Stay tuned for more!
The Earth needs a whole week, not just a day! So welcome to my Earth Week series.
If you’re new to the internet, welcome! You may have heard of the hashtag, or the greatest invention ever. With it, you can follow the conversation about pretty much everything. But I’m here to tell you about social campaigns worth following this Earth Day.
The #ClimateSign movement has been ongoing since the COP21 Paris Climate Agreement, and encourages people all over the world to throw up the “climate sign,” the letter “c,” and say why you care about climate!
While I worked Weather + Climate Day at the National Aquarium a couple weeks ago, I ran into some Climate Sign people working the same event! There’s me, above, saying I care about climate because I care about people. Follow them on Twitter to join the movement.
“The Earth Day #24Seven campaign will give the world a glimpse at the various efforts NASA undertakes to protect and understand our home planet. NASA will post time-stamped snapshot “moments” throughout the day on numerous Earth-related social media accounts to collectively paint a picture of NASA Earth science.”
Apple is pairing up with the World Wildlife Fund this Earth Week to raise money for climate change mitigation, forest conservation and fresh water protection (among other causes!). 100% of the purchases of certain apps (including some from Disney, Marvel and Angry Birds) as well as in-app purchases will go to these causes. Apps for Earth! Stay tuned, blog post coming tomorrow on this very subject!
The National Aquarium is launching a national campaign around water — all kinds of it! The campaign, dubbed #48DaysofBlue, launches on Earth Day and continues on until World Oceans Day 48 days later. The push covers everything from the issues oceans face in the long term (like pollution and ocean acidification) to water conservation in your home. Follow along on Twitter!
The Earth Day Network is urging people to plant trees to combat climate change with their #Trees4Earth hashtag.
Deforestation is a major contributor to global greenhouse gas emissions, responsible for up to 15% of global greenhouse gas emissions. Deforestation plays such an oversized role in climate change, in fact, that part of the 2015 Paris Agreement singled out both the end of deforestation and the importance of reforestation to hitting national climate goals.
Last but certainly not least, an oldie but a goodie, the #EarthDay hashtag will have everything and MORE about the greatest holiday on the planet (in my opinion, of course). Follow #EarthDay and #EarthWeek (because Earth deserves more than one day) on Twitter for Earth news for the whole week.