The Carbon Cycle 3D Animation. When Permafrost Melts, What Happens to All That Stored Carbon? A new study documents evidence of a massive release of carbon from permafrost as temperatures rose at the end of the last glacial period.
Photo: Dentren/CC-BY-3.0 The Arctic’s frozen ground contains large stores of organic carbon that have been locked in the permafrost for thousands of years. As global temperatures rise, that permafrost is starting to melt, raising concerns about the impact on the climate as organic carbon becomes exposed. Geogarific: Water and Carbon in the Amazon Rainforest. For the past 6 years teaching geography A-level I've had to choose between ecosystems and plate tectonics so sadly I haven't taught much on tropical rainforests for quite a while (you can guess which of the two aforementioned topics is more popular!). So I was excited to see the Amazon rainforest as one of the core case studies in the textbook for this new OCR spec.
I hope your enjoy the lesson and resources I've prepared (click on the link below to download). For a topic with such a wealth of information available it sure took me a long time to decide what to put in! I haven't actually used it myself yet but I'm expecting it will take at least 2-3 lessons plus homework. It includes a GIS activity and consideration of exam questions (sample ones taken from the OCR website).
Lastly I would like to thank Charlotte Springall for her help in creating this resource. If you would like to leave me a comment with some feedback it would be much appreciated! Giant icebergs play 'major role' in ocean carbon cycle. Giant icebergs could be responsible for the processes that absorb up to 20% of the carbon in the Southern Ocean's carbon cycle, a study suggests.
Researchers say meltwater from these vast blocks of ice release nutrients into the surrounding waters, triggering plankton blooms that absorb the carbon. Described as the first study of its kind, the authors examined satellite data between 2003 and 2013. The results have been published in the journal Nature Geoscience. A team of scientists gathered data from 175 satellite images that tracked the passage of 17 giant icebergs (measuring more than 18km/11 miles in length) through the open waters of the ocean surrounding Antarctica. Writing in their paper, the team observed: "We detect substantially enhanced chlorophyll levels, typically over a radius at least 4-10 times the iceberg's length, which can persist for more than a month following passage of a giant iceberg. " Image copyright NAture. BBC Taster - Bitesize Masterclass No.2. Rise in atmospheric CO2 slowed by green vegetation. Image copyright SPL.
Alaska's Last Oil. Climate urgency: we've locked in more global warming than people realize. While most people accept the reality of human-caused global warming, we tend not to view it as an urgent issue or high priority.
That lack of immediate concern may in part stem from a lack of understanding that today’s pollution will heat the planet for centuries to come, as explained in this Denial101x lecture: So far humans have caused about 1°C warming of global surface temperatures, but if we were to freeze the level of atmospheric carbon dioxide at today’s levels, the planet would continue warming. Over the coming decades, we’d see about another 0.5°C warming, largely due to what’s called the “thermal inertia” of the oceans (think of the long amount of time it takes to boil a kettle of water). The Earth’s surface would keep warming about another 1.5°C over the ensuing centuries as ice continued to melt, decreasing the planet’s reflectivity. The carbon and water cyles, climate and change. Water cycle | carbon cycle | human impacts | stores | processes | climate change | weather | pollution | flooding | sustainable water supply | water and carbon control at global scale To support teachers with the introduction of the 2016 A Level courses, the Society is providing a new range of online resources and support.
The following overview documents provide an introduction for teachers to some of the key content, concepts and geographical theories within the new A Levels and will be particularly useful for colleagues who have not previously taught elements of the new content. These have been written by leading academic geographers, a number of whom were members of the ALCAB subject advisory panel for geography. Carbon and water cycles (PDF) Written by Martin Evans, Professor of Geomorphology, School of Environment, University of Manchester Climate Change Updates for A Level Geography Developed jointly with the Royal Meteorological Society and National Centre for Atmospheric Science.