... BBC Bitesize - Global warming resistant GM crops. Climate is different from weather because climate refers to the average temperature and cycles of weather over long periods of time – decades at least. A whole host of consequences will result. Environment-al changes . Effects of global ... 2021 BBC. Human activities are increasing the amount of some greenhouse gases in the atmosphere. "Globally forest areas continue to decline," says Bonnie Waring, senior lecturer at the Grantham Institute, noting that there are big regional differences. ... accepted that the increase in atmospheric carbon dioxide is to blame for global warming. "Protecting existing forests is even more important than planting new ones. 10. But unless the data is compared for many years a judgment cannot be made about whether the climate is changing. But in some parts of the world it is less than this and some more. We haven't had that for 55 million years. The past decade was the hottest on record. Across the northern hemisphere, permafrost – the ground that remains frozen year-round for two or more years – is warming rapidly. Español; Healing the planet starts in your garage, in your kitchen, and at your dining-room table. But that means human action can help solve it.". Whether humans are responsible for the bulk of climate change is going to be left to the scientists, but it's all of our responsibility to leave this planet in better shape for the future generations than we found it. The amount of CO2 in the atmosphere reached record levels in 2020, hitting 417 parts per million in May. Some people believe that the current and ongoing rise in global temperatures is being caused by natural factors and cycles of climate change. Both continuous permafrost (long, uninterrupted stretches of permafrost) and discontinuous (a more fragmented kind) are in decline. High temperature anomalies have become greater and more frequent in recent years on land, air and sea (Credit: NOAA/BBC). The temperature rise will be small in the tropics but much greater at high latitudes. 1960 – Presents The People of Paradise , a series about the anthropology and natural history of the South Pacific – the first of many programmes from Attenborough with a strong anthropological focus. Earthquakes & Mountains; Food & Nutrition - Soul Food Cafe; Properties and changes of materials; Summer 1. It is thought to have contributed to the collapse of a huge fuel tank in the Russian Arctic in May, which leaked 20,000 tonnes of diesel into a river. "We are seeing record levels every year," says Ralph Keeling, head of the CO2 programme at the Scripps Institution of Oceanography, which has been tracking CO2 concentrations from the Mauna Loa observatory in Hawaii since 1958. What is global warming? BBC News looks at what we know and don't know about the Earth's changing climate. BBC Future brings you our round-up of where we are on climate change at the start of 2021, according to five crucial measures of climate health. If you liked this story, sign up for the weekly bbc.com features newsletter, called "The Essential List". Brazil, the Democratic Republic of the Congo and Indonesia are the countries losing forest cover most rapidly. Twitter Facebook WhatsApp. A handpicked selection of stories from BBC Future, Culture, Worklife, and Travel, delivered to your inbox every Friday. Thawing permafrost also damages existing infrastructure and destroys the livelihoods of the indigenous communities who rely on the frozen ground to move around and hunt. Earth’s climate has changed over various timescales since the dawn of geologic time, and the force of human activities since the Industrial Revolution has been woven into the fabric of … "We have put 100ppm of CO2 in the atmosphere in the last 60 years," says Martin Siegert, co-director of the Grantham Institute for climate change and the environment at Imperial College London. What is global warming? People might talk about the weather being windy last week, or hotter last year than the year before. The movement of water is significant for understanding the environment. "We are losing a lot of tropical forests in South America and Africa [and] regaining temperate forests through tree planting or natural regeneration in Europe and Asia.". Bright white sea ice plays an important role in reflecting heat from the Sun back out into space, a bit like a reflective jacket. In 2020, deforestation of the Amazon rainforest surged to a 12-year high. Read about our approach to external linking. Global warming can reach levels of irreversibility, and increasing levels of global warming can eventually reach an extinction level where humanity and all life on earth will end. Nowhere is that increase in heat more keenly felt than in the Arctic. Is global warming bad? "If we keep tracking the worst-case scenario, by the end of this century levels of CO2 will be 800ppm. Global warming first emerged as a cause of global concern in the 1980's, a result of the apparent rise in global temperatures, believed to be due to human activities, such as burning of fossil fuels and destruction of forests. 2019/Nature Communications/BBC). The exceptionally warm temperatures triggered the largest wildfires ever recorded in the US states of California and Colorado, and the "black summer" of fires in eastern Australia. Average temperatures today are about 1 °C (1.8 °F) higher than before people started burning a lot of coal around 1750. "Soils globally contain more carbon than all plants and atmosphere put together," says Waring. In 2015-20 the annual deforestation rate was 10 million hectares (39,000 square miles, or about the size of Iceland), compared to 12 million hectares (46,000 square miles) in the previous five years. 2020/BBC). When air temperatures reached 38C (100F) in Siberia in the summer of 2020, land temperatures in several parts of the Arctic Circle hit a record 45C (113F), accelerating the thawing of permafrost in the region. Human activities, mainly the burning of fossil fuels and clearcutting of forests, have increased the greenhouse effect and caused global warming. How are extra greenhouse gases produced? because climate refers to the average temperature and cycles of weather over long periods of time – decades at least. And at your dining-room table of coal around 1750 green energy what is global warming unless the data is for. 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