Graph of the Day – Page 48 – Desdemona Despair

Deep water underneath the Thwaites ice shelf front is lighter than water outside the ice shelf. (A) Map of trough T3 showing the AUV path color coded by latitude. Shaded region indicates the ice shelf front, and black contours are depth contours. (B) Conservative temperature θ (in degrees Celsius) versus absolute salinity SA (in grams per kilogram) for the AUV data points shown in (A), colors as in (A). Contours show potential density (9) relative to 900 m, and blue arrow indicates isopycnal mixing, i.e., water that has the same density but different temperatures and salinities. Green circles in (A) and (B) show the dense saline deep water found in trough T3 discussed in the main text. (C) Absolute salinity SA (in grams per kilogram) as a function of depth for the AUV data in trough T3 and the CTD data (colors indicate station as in Fig. 3). (D) Potential density (in kilograms per cubic meter) as a function of depth for the AUV data in trough T3 and the CTD data (colors indicate station as in Figs. 3 and 4). Red and blue arrows indicate the two deep water masses discussed in the main text from Pine Island Bay and Thwaites Trough. Dissolved oxygen versus θ and SA is shown in fig. S6. Graphic: Wåhlin, et al., 2021 / Science Advances

April 11, 2021

Exploration of ocean currents beneath the “Doomsday Glacier” by an autonomous underwater vehicle – Net melting of 75 cubic km of ice per year means “the glacier is not stable over time”

9 April 2021 (University of Gothenburg) – For the first time, researchers have been able to obtain data from underneath Thwaites Glacier, also known as the “Doomsday Glacier”. They find that the supply of warm water to the glacier is larger than previously thought, triggering concerns of faster melting and accelerating ice flow. With the […]

Deer photographed by a remote camera on 11 August 2020 in a forest destroyed by climate change in North Carolina. Sea level rise and saltwater intrusion are killing trees en masse, causing ghost forests. Photo: Emily Ury

April 11, 2021

Sea level rise is killing trees along the Atlantic coast, creating “ghost forests” that are visible from space

By Emily Ury 6 April 2021 (The Conversation) – Trekking out to my research sites near North Carolina’s Alligator River National Wildlife Refuge, I slog through knee-deep water on a section of trail that is completely submerged. Permanent flooding has become commonplace on this low-lying peninsula, nestled behind North Carolina’s Outer Banks. The trees growing in […]

Global monthly mean atmospheric CO2, 1980-2020. These graphs shows the mean global atmospheric burden of carbon dioxide as analyzed from measurements collected by the NOAA Global Greenhouse Gas Reference Network. Graphic: NOAA Global Monitoring Laboratory

April 11, 2021

Despite pandemic shutdowns, carbon dioxide and methane surged in 2020 – Carbon dioxide levels now higher than any time in past 3.6 million years – Largest annual methane increase ever recorded

7 April 2021 (NOAA) – Levels of the two most important anthropogenic greenhouse gases, carbon dioxide and methane, continued their unrelenting rise in 2020 despite the economic slowdown caused by the coronavirus pandemic response, NOAA announced today. The global surface average for carbon dioxide (CO2), calculated from measurements collected at NOAA’s remote sampling locations, was […]

COVID-19 daily cases per 100,000 population in India, 4 April 2021. On 3 April 2021, the Indian Ministry of Health and Family Welfare confirmed 93,249 new cases, the highest single-day tally since mid-September 2020. The country’s daily case counts have been rising exponentially since early March 2021. Graphic: 91-DIVOC

April 5, 2021

India sees “alarming rate of growth of COVID-19 cases and deaths” – 47,913 new cases reported in a single day in Maharashtra, “which is more than double its earlier peak”

By Morgan Winsor 5 April 2021 LONDON (ABC News) – India has seen “an alarming rate of growth of COVID-19 cases and deaths” in recent weeks, the prime minister’s office said Sunday. More than 12.3 million people in India have been diagnosed with COVID-19 so far and at least 165,101 of them have died, making India one […]

Top 10 accounts by tweets, likes, and retweets in tweets mentioning “vaccines” or “vaccinations” between 9 November 2020 and 9 February 2021. The fact that the Russian Embassy in Mexico received the fifth most likes and retweets is remarkable given that the embassy only posted 46 tweets mentioning vaccines during the studied period. On a per-tweet basis, the embassy’s vaccine-related tweets received the most engagement of any monitored account—roughly 795 likes and 374 retweets per post—far more than state media accounts with 100 times more followers. Likely buoyed by its vaccine messaging, the @embrusiamexico account saw the third largest percent gain in followers (70 percent) among monitored Russian accounts during the studied period. Data: Hamilton 2.0. Graphic: ASD

March 31, 2021

How Russia, China, and Iran shaped and manipulated coronavirus vaccine narratives

By Bret Schafer, Amber Frankland, Nathan Kohlenberg, and Etienne Soula 6 March 2021 (ASD) – When Vladimir Putin announced last August that Russia had granted regulatory approval for Sputnik V, the world’s first coronavirus vaccine, it signaled—albeit perhaps prematurely—not only a potential turning point in the fight to end the coronavirus pandemic but also a new phase in […]

Annualized global Bitcoin electricity consumption in TWh, 2016-2021. Graphic: Cambridge Bitcoin Electricity Consumption Index / University of Cambridge

March 28, 2021

Majority of global Bitcoin energy consumption powered by non-renewable energy – Only 39 percent comes from renewables

24 September 2020 (CCAF) – The Cambridge Centre for Alternative Finance (CCAF) at the Cambridge Judge Business School today published the third edition of its Global Cryptoasset Benchmarking Studywhich highlights the industry’s efforts to address regulatory concerns over anti-money laundering (AML) and combating the financing of terrorism (CFT), but cautions that efforts to address issues such […]

Between 2010 and 2020, the U.S. fell eleven points in Freedom House’s annual report on political rights and civil liberties, Freedom in the World. Considered from a global perspective, the erosion of US democracy is remarkable, especially for a country that has long aspired to serve as a beacon of freedom for the world. A decade ago, the United States received a score of 94 out of 100, which put it in the company of other established democracies, like France and Germany. Today, whereas those former peers remain at 90 or above, the U.S. has fallen to a score of 83, leaving it in a cohort with newer democracies like Romania, Croatia, and Panama. Graphic: Freedom House

March 27, 2021

U.S. sinks to new low in ranking of world’s democracies, slipping 11 points in a decade, below Argentina and Mongolia – “These longer-term challenges aren’t going to be addressed with quick fixes. A change of president is not gonna make them go away”

By Sam Levine 24 March 2021 (The Guardian) – The US has fallen to a new low in a global ranking of political rights and civil liberties, a drop fueled by unequal treatment of minority groups, damaging influence of money in politics, and increased polarization, according to a new report by Freedom House, a democracy watchdog group. The […]

Monthly evolution of global CO2 emissions in 2020, relative to 2019. After hitting a low in April 2020, global emissions rebounded strongly and rose above 2019 levels in December. Global CO2 emissions were 2 percent, or 60 million tonnes, higher in December 2020 than they were in the same month a year earlier. Major economies led the resurgence as a pick-up in economic activity pushed energy demand higher and significant policies measures to boost clean energy were lacking. Many economies are now seeing emissions climbing above pre-crisis levels. Graphic: IEA

March 27, 2021

After steep drop in early 2020, global carbon dioxide emissions have rebounded strongly – “The rebound in global carbon emissions is a stark warning that not enough is being done to accelerate clean energy transitions worldwide”

2 March 2021 (IEA) – The Covid-19 crisis in 2020 triggered the largest annual drop in global energy-related carbon dioxide emissions since the Second World War, according to IEA data released today, but the overall decline of about 6% masks wide variations depending on the region and the time of year. After hitting a low in […]

Map of the U.S. showing incidents of hate, extremism, antisemitism, and terrorism in 2020. Graphic: ADL

March 22, 2021

White supremacist propaganda in U.S. hits all-time high in 2020 – “White supremacists appear to be more emboldened than ever”

New York, NY, 17 March 2021 (ADL) – White supremacist propaganda distribution surged across the United States in 2020, with a total 5,125 cases of racist, antisemitic, and other hateful messages reported by ADL (Anti-Defamation League). Last year marked the highest level of incidents reported since ADL began tracking such data – an average of […]

10,000 years of carbon dioxide. Due in large part to the burning of fossil fuels, carbon dioxide levels in the atmosphere have now risen by about 50 percent% above the preindustrial level. At recent rates of growth, we would reach double the preindustrial by around the year 2075. Graphic: Dr. Robert Rohde

March 21, 2021

Graph of the Day: 10,000 years of carbon dioxide

Dr. Robert Rohde 17 March 2021 (Twitter) – Due in large part to the burning of fossil fuels, carbon dioxide levels in the atmosphere have now risen about 50 percent above the preindustrial level. At recent rates of growth, we would reach double the preindustrial by around 2075. Dr. Robert Rohde on Twitter