Featured image: Sugarcane plantation to produce ethanol in Brazil by José Reynaldo da Fonseca on Wikipedia under CC BY 2.5.
Paper: Stenzel, F., Greve, P., Lucht, W. et al. Irrigation of biomass plantations may globally increase water stress more than climate change. Nat Commun 12, 1512 (2021). https://doi.org/10.1038/s41467-021-21640-3
In order to mitigate the effects of the climate crisis, we must stay under a 1.5℃ average global temperature increase from pre-industrial levels. To help reach this goal, there is growing interest in “negative emission technologies”, which are methods of removing greenhouse gases, like carbon dioxide, from the atmosphere. These carbon capture technologies have been around since the 1970s, but the best carbon capture technology might be as simple as plants. Fabian Stenzel and his team explain that cultivating fast-growing plant species, processing them into biomass, and capturing any emitted carbon dioxide therein, would actually result in negative emissions. Specifically, creating biomass through this method can capture upwards of 2 gigatons of carbon per year by 2050 (that’s close to the mass of 12 million blue whales). Burning this would also unlock an incredibly energy dense source of power. While burning the biomass would inevitably release carbon dioxide into the atmosphere, the process of growing it would drastically offset this by removing a much larger amount. However, one crucial question needs to be answered: will we have enough water to pull it off?
Continue reading “Plants may help solve the climate crisis, but is there enough water for everyone?”
Featured image from CJ on Pixabay
Article: Quantifying Human-Induced Dynamic and Thermodynamic Contributions to Severe Cold Outbreaks Like November 2019 in the Eastern United States
Authors: C. Zhou, A. Dai, J. Wang, and D. Chen
Questions about extreme cold outbreaks have been featured in the U.S. news recently, as a majority of the country experienced record-breaking cold temperatures during the week of February 8, 2021. Was this extreme cold related to climate change? Will we see more of these events in the future? As Texans faced extensive blackouts due to issues with electricity generation and transmission because of the cold, meteorologists and news reporters tried to answer these questions as best they could. But what does the latest climate science say about the link, if any, between extreme cold outbreaks and climate change?
Continue reading “How does climate change impact extreme cold outbreaks in the United States?”
Paper: Divergent effects of climate change on future groundwater availability in key mid-latitude aquifers
Authors: Wen-Ying Wu, Min-Hui Lo, Yoshihide Wada, James S. Famiglietti, John T. Reager, Pat J.-F. Yeh, Agnès Ducharne, and Zong-Liang Yang
The ground I’m standing on feels solid, but it’s really full of porous rocks. The holes in these rocks are all different sizes, and water can flow through and between those with larger holes. Together, bodies of rocks that are saturated with water form aquifers. As groundwater supplies more than a third of the water humans use, groundwater and the aquifers that contain it are vital. They are especially vital in mid-latitude arid and semi-arid regions without enough surface water. In their recent research, Wen-Ying Wu and their collaborators studied the future of aquifers in such regions and what factors control it.
Continue reading “The Fate of Aquifers, and What Controls It”
Feature Image by mirobo on Pixabay
Article: The Shifting Scales of Western U.S. Landfalling Atmospheric Rivers Under Climate Change
Authors: Rhoades, A. M., Jones, A. D., Srivastava, A., Huang, H., O’Brien, T. A., Patricola, C. M., Ullrich, P. A., Wehner, M., and Zhou, Y.
While residents of the West Coast of the United States usually don’t have to worry about hurricanes, snow storms, or tornadoes, every winter they do experience extreme weather events known as atmospheric rivers. Atmospheric rivers are plumes of highly concentrated water vapor in the atmosphere. When they move over land, they can produce very heavy rainfall that can cause flooding and even trigger landslides. However, atmospheric rivers are not all bad; in fact, some might even say they’re essential. They provide up to half of California’s rainfall every year, which is beneficial for agriculture and water supply. Like all weather events, atmospheric rivers are impacted by climate change, so how will they be different in a few decades? This question is essential for water resource managers and regular residents of the West Coast, since atmospheric rivers can both help and harm their livelihoods.
Continue reading “Will Atmospheric Rivers Shift from Helpful to Harmful due to Climate Change?”
Paper: Freshening of the western Arctic negates anthropogenic carbon uptake potential
Authors: R.J. Woosley and F.J. Millero
Journal: Limnology and Oceanography
As human generated emissions of carbon dioxide continue to increase, scientists seek to understand the potential for ‘sinks’, or places that the excess CO2 can move in the global carbon cycle, to take up and store some of the increased emissions. Understanding how these carbon sinks may react to increasing global emissions helps to better predict both the rate of atmospheric increase in the future and the potential response of global ecosystems, including major sinks in forests and oceans.
Continue reading “The role of carbon in a changing Arctic”
Paper: Contemporary limnology of the rapidly changing glacierized
watershed of the world’s largest
High Arctic lake
Authors: K. A. St. Pierre, V. L. St. Louis, I. Lehnherr, S. L. Schiff, D. C. G. Muir , A. J. Poulain, J. P. Smol, C. Talbot, M. Ma, D. L. Findlay, W. J. Findlay, S. E . Arnott, Alex S . Gardner
As glaciers recede in the arctic, the increase in meltwater may significantly impact downstream ecosystems. Glacial ice can hold thousands of years’ worth of dust, nutrients, and other materials that are released during melting. As the rate of melt increases with a warming climate, the release has the potential to increase nutrient flows and sediment loads, alter pH, and impact other physical, chemical, and biological aspects of downstream watersheds. These changes could negatively impact water clarity and ecosystem function in lakes, rivers, and the ocean.
Continue reading “What’s in the Water?”
Featured Image: Picture of a wildfire by skeeze on Pixabay
Paper: Extreme Pyroconvective Updrafts During a Megafire
Authors: B. Rodriguez, N. P. Lareau, D. E. Kingsmill, and C. B. Clements
Atmospheric updrafts, or columns of air moving quickly upward, are typically associated with severe thunderstorms and tornadoes and have been studied using radar and airplane data for decades. The extreme heat from large, intense fires can also cause updrafts, but this type of updraft has barely been studied by atmospheric science researchers. Understanding the formation and structure of fire-generated updrafts is important because they can be hazardous to aircraft, can loft embers far distances and spark new fires, and can even initiate fire-generated thunderstorms. A recent study has revealed just how powerful these updrafts above large fires can be.
Continue reading “Strong Atmospheric Updrafts Increase the Danger Associated with Wildfires”
Featured image: Jeremy Bishop on Pexels
Paper: Re-evaluating mid-Holocene reef “turn-off” on the inshore Southern Great Barrier Reef
Authors: Leonard, N.D., Lepore, M.L., Zhao, J.X., Rodriguez-Ramirez, A., Butler, I.R., Clark, T.R., Roff, G., McCook, L., Nguyen, A.D., Feng, Y. and Pandolfi, J.M.
A new study has reconstructed the complex growth history of coral communities in the Keppel Islands, southern Great Barrier Reef, revealing that the area might provide a safe-haven for coral under climate change.
Continue reading “Warmer climate could mean corals thrive in the southern Great Barrier Reef”
Featured image of sea ice from Free-Photos on Pixabay
Paper: Rapid Cooling and Increased Storminess Triggered by Freshwater in the North Atlantic
Authors: M. Oltmanns, J. Karstensen, G. W. K. Moore, and S. A. Josey
Way up north in the Arctic Circle, sea ice and glaciers are rapidly melting and sending a massive amount of cold, fresh water into the North Atlantic Ocean. At first this influx of cold water may seem beneficial to offset the warming from climate change, but new research suggests that this meltwater from Greenland and the Arctic increases the number of winter storms that occur in the Northern Hemisphere.
Continue reading “North Atlantic Ice Melt May Increase the Storminess of the Northern Hemisphere”
Paper: Persistent influence of obliquity on ice age terminations since the Middle Pleistocene transition
Featured image: Stalagmites captured by mareke on Pixabay
Authors: Petra Bajo, Russell N. Drysdale, Jon D. Woodhead, John C. Hellstrom, David Hodell, Patrizia Ferretti, Antje H.L. Voelker, Giovanni Zanchetta, Teresa Rodrigues, Eric Wolff, Jonathan Tyler, Silvia Frisia, Christoph Spötl, Anthony E. Fallick
Our planet has been circling and spinning in a wobbly dance around the Sun for billions of years. The exact motions of this dance- governed by Earth’s near-circular orbit (eccentricity), the tilt of its axis, and the orientation of the tilted axis in space (precession) fluctuate predictably. Variations in this planetary dance have changed the amount and distribution of sunlight reaching Earth’s surface through time, and have determined when the planet experienced long periods of cold temperatures and growth of massive ice caps on the continents (ice ages). However, scientists have not been so sure about which planetary motion is the most important for the timing of ice ages. New research uses climate information stored in caves to precisely link these motions to ice ages, showing that axis tilt may be the most important position in the dance when it comes to pulling Earth’s climate out of those frigid times.
Continue reading “Cave formations show link between ice ages and the tilt of Earth’s axis”