Benjamin Franklin on Global Warming  

Posted by Big Gav in ,

The New York Times has an article on historical observations of anthropogenic climate change - Ben Franklin on Global Warming .

In the 1780s, Thomas Jefferson opined in his “Notes on Virginia” that “both heats and colds are become much more moderate within the memory even of the middle-aged,” expressing views articulated as early as 1721 by Cotton Mather: “Our cold is much moderated since the opening and clearing of our woods, and the winds do not blow roughly as in the days of our fathers, when water, cast up into the air, would commonly be turned into ice before it came to the ground.”

The weather historian James R. Fleming has noted that the vexing scientific challenge in the climate debate has always been “the response of a large, complex, potentially chaotic system to small changes in forcing factors.” Benjamin Franklin understood climatic forcing factors better than anyone, surmising in a 1763 letter to Ezra Stiles that “cleared land absorbs more heat and melts snow quicker.” Franklin, our meteorologist emeritus for his seminal work on everything from lightning to northeasters, later surmised (correctly) that a prevailing haze over parts of North America and northern Europe was associated with the eruption of the Laki volcano in Iceland in June 1783, and was possibly the source for the exceptional chill experienced in the winter of 1783-84 in the new United States.

On the other side of the developing weather controversy in the late 18th century, Webster quarreled with Jefferson, insisting that he relied too heavily on the memories of “elderly and middle-aged people” for his observation that the climate had moderated. While Webster conceded an anthropogenic influence might still be at work, he argued that it caused something less than climate change: “All the alterations in a country, in consequence of clearing and cultivation, result only in making a different distribution of heat and cold, moisture and dry weather, among the several seasons.”

Hugh Williamson, astute in his understanding of the hydrological cycle, a key component in any climate change debate, wrote, “The vapors that arise from the forests are soon converted into rain, and that rain becomes the subject of future evaporation, by which the earth is further cooled.” A century and a half later, land-use studies would confirm quantifiable relationships between clearing trees for extensive farmland and changes in soil temperature, moisture distribution and local and regional climate responses, as well as the urban heat-island effect. In our time, we have learned that tropical deforestation is linked to as much as 15 percent of the world’s global warming pollution, largely due to the release of carbon dioxide, one of several “greenhouse gases” that trap and re-radiate terrestrial heat.

1 comments

James R. Fleming, Historical Perspectives on Climate Change (Oxford University Press, 1998, paper 2005).

...the NYT editorial failed to mention the book.

Post a Comment

Statistics

Locations of visitors to this page

blogspot visitor
Stat Counter

Total Pageviews

Ads

Books

Followers

Blog Archive

Labels

australia (607) global warming (393) solar power (376) peak oil (343) renewable energy (253) electric vehicles (221) wind power (184) ocean energy (163) csp (156) geothermal energy (144) solar thermal power (143) smart grids (139) tidal power (137) coal seam gas (130) oil (129) solar pv (127) nuclear power (126) energy storage (125) lng (116) china (113) geothermal power (112) iraq (112) green buildings (109) natural gas (108) agriculture (88) oil price (79) biofuel (78) smart meters (72) wave power (71) uk (68) electricity grid (67) energy efficiency (63) coal (61) google (57) bicycle (51) internet (51) shale gas (49) surveillance (49) food prices (48) big brother (47) thin film solar (42) canada (40) biomimicry (39) scotland (38) ocean power (37) politics (37) tesla (37) shale oil (36) new zealand (35) air transport (34) algae (34) water (34) concentrating solar power (32) queensland (32) saudi arabia (32) california (31) credit crunch (31) bioplastic (30) offshore wind power (30) arctic ice (29) population (29) cogeneration (28) geoengineering (28) batteries (26) drought (26) resource wars (26) woodside (26) bruce sterling (25) censorship (25) cleantech (25) ctl (23) economics (22) limits to growth (22) carbon tax (20) coal to liquids (20) distributed manufacturing (20) indonesia (20) iraq oil law (20) lithium (20) origin energy (20) brightsource (19) buckminster fuller (19) rail transport (19) ultracapacitor (19) exxon (18) santos (18) ausra (17) michael klare (17) atlantis (16) cellulosic ethanol (16) collapse (16) electric bikes (16) iceland (16) mapping (16) ucg (16) bees (15) concentrating solar thermal power (15) ethanol (15) geodynamics (15) psychology (15) brazil (14) fertiliser (14) lithium ion batteries (14) al gore (13) ambient energy (13) biodiesel (13) bucky fuller (13) carbon emissions (13) cities (13) investment (13) kenya (13) matthew simmons (13) public transport (13) biochar (12) chile (12) desertec (12) internet of things (12) otec (12) texas (12) victoria (12) cradle to cradle (11) energy policy (11) hybrid car (11) terra preta (11) toyota (11) amory lovins (10) fabber (10) gazprom (10) goldman sachs (10) gtl (10) severn estuary (10) tinfoil (10) volt (10) afghanistan (9) alaska (9) antarctica (9) biomass (9) carbon trading (9) distributed generation (9) esolar (9) four day week (9) fuel cells (9) jeremy leggett (9) pge (9) sweden (9) arrow energy (8) big oil (8) eroei (8) fish (8) floating offshore wind power (8) guerilla gardening (8) linc energy (8) methane (8) methane hydrates (8) nanosolar (8) natural gas pipelines (8) pentland firth (8) relocalisation (8) saul griffith (8) stirling engine (8) us elections (8) western australia (8) airborne wind turbines (7) bloom energy (7) boeing (7) bolivia (7) chp (7) climategate (7) copenhagen (7) vinod khosla (7) apocaphilia (6) ceramic fuel cells (6) cigs (6) futurism (6) jatropha (6) local currencies (6) nigeria (6) ocean acidification (6) scenario planning (6) somalia (6) t boone pickens (6) space based solar power (5) varanus island (5) garbage (4) global energy grid (4) kevin kelly (4) low temperature geothermal power (4) oled (4) tim flannery (4) v2g (4) club of rome (3) norman borlaug (2) peak oil portfolio (1)