Envirographs - EnviroGraphs

Avg. daily precipitation in the U.S. over the course of a year

Source: MetricMaps

The United States-Mexico border (solid black line); observed range of adult male jaguar ‘Macho B’ from May 2006 to April 2007 (white oval); important cross-border corridors for jaguars and other wildlife (heavy white double-arrows); 4- to 5-m-tall steel border fences existing or under construction as of 2007 (solid white lines); increased border security [vehicle barriers, chain-link fences, virtual fencing, surveillance towers,agent patrols] (white dashed lines); funneled undocumented immigrant and resulting law enforcement traffic (black arrows).

Given the current administration’s promise to build a border wall along the entire US-Mexico border, worth considering this 2008 study on the potential impacts of a border fence on Jaguars in the borderlands. 

Jaguars (Panthera onca) are typically associated with the rain forests of Central and South America; however, the species historically ranged into the arid southwestern United States... as global climate trends change toward hotter, drier environments, Jaguars living in the borderlands may become even more important to the survival of the species. Effective conservation of jaguars will require maintaining sufficient core and connective habitats to avoid population fragmentation and thus reduce the probability of extinction. 

The Secure Fence Act of 2006 mandated the United States Department of Homeland Security to physically separate Mexico from the southwestern United States with steel fences 3–4 m high across 1,280 km of the United States–Mexico border, including ∼70% of the Arizona border... The border fence may effectively partition the already small, northernmost population of jaguars and isolate jaguars in the United States from the larger source population in northwestern Mexico.

Emil B. McCain, Jack L. Childs; Evidence of Resident Jaguars (Panthera onca) in the Southwestern United States and the Implications for Conservation. J Mammal 2008; 89 (1): 1-10. doi: 10.1644/07-MAMM-F-268.1

The figures from the previous post on deforestation (from the UN Food and Agriculture Organization) have a significant impact on carbon emissions and climate change. Because deforestation releases carbon stored in plants and soils, deforestation has become a major source of global carbon dioxide emissions. Countries with greater deforestation have greater emissions as a result.

Forest conversion in Brazil 1990-2010 released 25.8 billion metric tons of CO2. The next four greatest emitters from deforestation were Indonesia, Nigeria, the Democratic Republic of the Congo and Venezuela. Combating climate change will require reigning in deforestation.

The larger the share of overall energy jobs that are solar and wind jobs, the more likely a state was to support the Democratic candidate in 2016. This has an important lesson for Trump as his administration crafts energy policy.

Per Axios: 

...for the most part, states that Trump narrowly won have a higher percentage of energy jobs that are renewable-energy jobs than safe Republican states.

Thus, an energy policy that shuns renewables in favor or jobs in fossil fuels could bolster his support in solid red states, while jeopardizing his support in the swing states he narrowly won to give him the presidency. Trump would be wise to continue Obama’s investment in renewables.

The Sulztalferner glacier from 1990 and 2017.  Red arrow is where the glacier ended in 1990, yellow arrow where it ended in 2017, purple dots are the snowline, and the green arrow an area of exposed bedrock amidst the glacier.

 Sulztalferner is a glacier in the Alps of Austria... between 1969 and 2003, 14 of the 88 glaciers in this range disappeared. The area of these glaciers was to 54.1 km2 in 1969, but only 36.9 km2 in 2003. 

In 1990 the Sulztalferner glacier was 3050 m long; in 2017 the glacier is 2100 m long.

Source: AGU 

I'm back...

I apologize for my 5 months hiatus. I intend to divert my attention back to Envirographs, to continue using graphs and maps to explore environmental problems, trends and solutions.

Everglades (and south Florida, including Miami) with 2ft of sea level rise

A recent report from the Energy Information Administration found that U.S. plant owners and operators are getting ready to retire 27 gigawatts’ worth of coal generation, or about 8.5 percent of the coal fleet, between now and 2016. Considering the substantial contribution of burning coal to climate change, coal plant retirements are one of the greatest ways to reduce carbon emissions.

Most (59%) Americans say that stricter environmental laws and regulations are worth the economic cost, but there is a sharp partisan divide. Democrats overwhelming (77%) favor stricter environmental laws and regulations, but only 36% of Republicans agree. But this 41-point opinion gap is relatively recent. In 1994, the gap was only 8 points. Yet over the decades views of Republican and Democratic voters have diverged, with the divergence occurring rapidly and dramatically starting around 2008.