![]() ![]() So when we get El Nino years, there's that boost in our global temperatures. It also adds additional heat to the atmosphere. Remind us what El Nino is all about and how that might be playing into this.īERNADETTE WOODS PLACKY: So, El Nino is a natural phenomena that happens in the Pacific, where we warm our - well, the waters are warmed naturally.Īnd that changes some of our weather patterns around the globe. WILLIAM BRANGHAM: We're also entering the period of El Nino, which can warm the oceans and change the weather. So that's a lot of the globe spiking records like we have never experienced before. We are looking at southern parts of Europe, a lot of North America and Mexico, China all at the same times, right? It's not just one individual event in one season. So how can we really tease out the distinctions between summer weather and climate change?īERNADETTE WOODS PLACKY: It is always hotter in the summer than it is in the winter, correct.īut certain summers are hotter than others.Īnd what we're talking about right now is record after record after record after record. WILLIAM BRANGHAM: The reason I ask this is that, every time we do a story like this, the critics always say, well, oh, it's hot in summertime? Is that - is that how the mechanism works or is it more complicated than that?īERNADETTE WOODS PLACKY: So it doesn't mean every single place is getting the extreme heat all the time.īut when we really raise that platform to a different level, where we start with our heat, and you add additional heat into the whole Earth system, it's going to play out more intensely and more frequently with these big heat events. WILLIAM BRANGHAM: And is it simply a factor of the fact that this is a warmer atmosphere and we see warmer events? We know when we add more heat to our atmosphere through the burning of fossil fuels, that that translates into bigger, stronger heat events, which is the foundation for all of the climate changes that we see. WILLIAM BRANGHAM: And that's what this report seemed to indicate, that it was impossible for these heat waves to be as long and as severe, absent climate change. When we put all of that together, we have what's called attribution science, and we get our confidence in whether we could recreate this event or not. We can look and we can model different scenarios in our Earth's environment.Īnd when we bring down our levels of carbon dioxide or bring those up, we see changes in that. We can go back in time to see what's happened before. We do that through three ways, one, our knowledge of a specific weather event. This new report is part of a field of what is known as attribution science.Ĭan you tell us a little bit about what this study showed about the connection between climate change and these heat events?īERNADETTE WOODS PLACKY, Climate Central: So, attribution science is when we can go into individual weather events and tease out the role of climate change. She's the chief meteorologist and director at Climate Central, an independent group of scientists and communicators.īernadette Woods Placky, so good to have you on the "NewsHour." To help us understand more about this real-time assessment, we're joined by Bernadette Woods Placky. It comes from an international group of researchers known as the World Weather Attribution. will be living under a heat advisory, as a brutal heat wave moves into the Midwest and Northeast.Ī new analysis finds the heat that's been baking the U.S., Mexico, and Europe over the past month would be - quote - "virtually impossible" without human-caused climate change. ![]() In coming days, more than 100 million people in the U.S. (BREAK) WILLIAM BRANGHAM: Welcome to the "NewsHour." ![]() RITA, Paramedic (through translator): With time, you understand that you need to tune out and do your job very calmly, because on how composed you are a person's life depends. ![]() Plus, on the front lines in Ukraine, the grinding counteroffensive continues with incremental progress, as soldiers and medics face the horrors of war. Uncertainty abounds at the border after a judge blocks a key part of the Biden administration's asylum policy and Texas refuses to remove floating barriers in the Rio Grande. On the "NewsHour" tonight: Climate change is a definitive factor in the heat wave gripping much of the world, as yet another study provides further proof of the human impact on our warming planet. ![]()
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