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“#Stocks of vulnerable carbon twice as high where permafrost subsidence is factored in” A time series shows ground-ice ‘atlases’ in permafrost struggling to support the active layer as soil temperatures warm and accelerate thaw. As ice is lost, we see a significant shift in the soil surface over time, and the need to account for…
“#Antarctic sea ice loss explained in new study” Sea ice in the Weddell Sea has reduced by one third over the last five years. Credit: Susie Grant Scientists have discovered that summer sea ice in the Weddell Sea area of Antarctica has decreased by one million square kilometres—an area twice the size of Spain—in the…
“#Study: Biodiversity in stagnant shallow lakes cramps growth of aquatic plants” Underwater light field characteristics (Kd, TSM, Red/Blue, Zeu/WD, SD) under the presence of different species richness. Credit: WBG The recovery and long-term maintenance of submerged macrophytes is the key to the restoration of the ecosystem in eutrophic lakes, because submerged macrophytes can promote the…
“#Carbon emission from permafrost soils underestimated by 14%” Credit: Pixabay/CC0 Public Domain Picture 500 million cars stacked in rows. That’s how much carbon—about 1,000 petagrams, or one billion metric tons—is locked away in Arctic permafrost. Currently, scientists estimate that 5-15% of the carbon stored in surface permafrost soils could be emitted as the greenhouse gas…
“#New tool to measure aerosol optical hygroscopicity” Credit: CC0 Public Domain Researchers at Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science recently developed a humidified cavity-enhanced albedometer (H-CEA) which could simultaneously measure relative-humidity-dependent aerosol light extinction, scattering, absorption, and single scattering albedo. This work was done by Zhang Weijun and his…
“#What has caused more extreme summer heat events over northeast Asia?” More frequent heatwaves over Northeast Asia since 1990s. Credit: Ren Liwen Widespread hot extremes have been seen throughout the world in recent years, causing heat-related mortality and harming crops and livestock. In summer 2018, a record-breaking heat wave swept across large areas of Northeast…
“#Nitrogen in permafrost soils may exert great feedbacks on climate change” Mohe County in northeast China is the study site of the ‘NIFROCLIM’ project. Credit: Chunyan Liu What nitrogen is getting up to in permafrost soils may be much more interesting than researchers have long believed—with potentially significant consequences for our management of climate change….
“#Warm springs bring early, rapid plant growth, and severe droughts” Credit: CC0 Public Domain A new study shows that the severe impact of the summer drought that hit Europe in 2018 was partly due to the spring heatwave that preceded it, which triggered early and rapid plant growth, depleting soil moisture. With lots of sunshine,…
“#Could we run out of sand? Scientists adjust how grains are measured” Atolls and islands, like Huvadhoo Atoll, Maldives, could come under increased environmental stress during sea level rise and storms caused by climate change. Understanding how sands protect them is important part of mitigation and management. Credit: Ana Vila-Concejo, The University of Sydney Humans…
“#Bedrock type under forests greatly affects tree growth, species, carbon storage” The forest inventory plots in the Ridge and Valley physiographic province in Pennsylvanias used in this study are shown. Inventory plots were restricted to land owned and managed by the Pennsylvania Department of Conservation of Natural Resources Bureau of Forestry and the Pennsylvania Game…