Posted by edro on April 30, 2008
A confirmation of tipping point is presented in the following report by James Hansen, NASA climatologist:
Excerpts from Hansen’s report:
- We are at the tipping point because the climate state includes large, ready positive feedbacks provided by the Arctic sea ice, the West Antarctic ice sheet, and much of Greenland’s ice.
- Our home planet is dangerously near a tipping point at which human-made greenhouse gases reach a level where major climate changes can proceed mostly under their own momentum. Warming will shift climatic zones by intensifying the hydrologic cycle, affecting freshwater availability and human health.
Source:Tipping Point: Here and Now!
Report:Tipping Point: PERSPECTIVE OF A CLIMATOLOGIST [PDF]
The ice in the Arctic is much younger than normal, with vast regions now covered by first-year ice and much less area covered by multiyear ice. Left: February distribution of ice by its age during normal Arctic conditions (1985-2000 average). Right: February 2008 Arctic ice age distribution. Credit: NSIDC [Caption: NASA]
Posted in air pollution, Arctic, atmosphere, civilization, climate, climate change, CO2, dynamics of collapse, Earth, energy, environment, extinction, future, health, HIoN, Human activities, human migration, Human-induced climate change, ice dynamics, Index of Human Impact on Nature, industrialism, lifestyle, limits to growth | Tagged: Arctic ice, climatic zones, collapsing cities, collapsing ecosystems, greenhouse gases, Greenland’s ice, James Hansen, multiyear ice, NASA, PERSPECTIVE OF A CLIMATOLOGIST, positive feedback, Tipping Point | Leave a Comment »
Posted by edro on April 4, 2008
Index of Human Impact on Nature (HIoN) March 2008
As of End March 2008, the MSRB-CASF Index of Human Impact on Nature (HIoN), an index for calculating the full impact of human consumption and activities on the Earth’s life support systems, stood at a terminally high level of 177.43, a rise of about 3.5 percent over the previous year. In other words, the full human impact including the ecological footprint and the damage inflicted on the living environment by his activities in the 12-month period ending March 2008 was 77.43 percent higher than the load which the planet’s ecosystems in their current state can cope with.
Components of HIoN
The HIoN Index integrates updated data and methodology used by the Millennium Ecosystem Assessment Synthesis Report for Global Status of Provisioning, Regulating, and Cultural Ecosystem services.
Before and After [Top : Blue Marble composite images generated by NASA. Bottom (left), Mars from Hubble Space Telescope, (right) “Late spring on Mars” portrait taken with the HST Wide Field Planetary Camera-2 by NASA. Final composite image by FEWW.]
According to HIoN projections, our cities and population centers could become almost entirely unsustainable by as early as 2015.
Source: Index of Human Impact on Nature
Posted in air, atmosphere, climate change, CO2, economy, energy, environment, future, growth, health, land, lifestyle, natural capital, Oceans, pollution, soil, war, water | Tagged: Blue Marble, Earth, Human Impact on Nature, mars, marsification, Mojavefication, Mojavefied, red tide | 1 Comment »
Posted by edro on February 26, 2008
“Dust fall” in the West in the last 100 years is up to seven times heavier than at any other period in history
Human activities such as settlement, railroad, industry, farming and ranching has caused a huge increase in the dust levels in the air, according to a report by the University of Colorado at Boulder. More …
Mining Sets Off Earthquake in Germany: Strongest regional quake on record
An earthquake caused by coal mining shook the Saarland region of Germany on the French border Saturday. Measuring 4.0 on the Richter scale, the earthquake caused damage to buildings and cut off the electricity supply to the area. Original report
New Greenland Ice Sheet Data Will Impact Climate Change Models
“If current climate models from the IPCC included data from ice dynamics in Greenland, the sea level rise estimated during this century could be twice as high as what they are currently projecting” ~ Beata Csatho, Ph.D., University of Buffalo College of Arts and Sciences. More …
Research conducted by a UB geologist on the Greenland ice sheet shows the trimline (broken brown line) that marks the maximum extent of the ice sheet at the end of the 18th century and the subsequent retreat of the glacier and land exposed since 1944. [Credit: UB; download image JPEG]
Human-induced climate change has altered the rainfall patterns globally
“For the first time, climate scientists have clearly detected the human fingerprint on changing global precipitation patterns over the past century” More …
Human-induced climate change at a regional scale in Canada, southern Europe and China
Evidence from global air and ocean temperatures, melting snow and ice, and rising sea level show that warming of the climate system is now unequivocal
Arctic summers ice-free ‘by 2013’
Given other facts, the projection of 2013 is already too conservative. In the end, it will just melt away quite suddenly” ~ Professor Peter Wadhams. More …
CO2 levels in the atmosphere have risen 35% faster than expected since 2000
Decline in the natural ability of land and oceans to soak up CO2 from the atmosphere accounts for 18%, inefficient use of fossil fuels adds another 17% to the CO2 increase. More…
Posted in Arctic, CO2, Earthquake, Germany, Greenland, Human-induced climate change, ice dynamics, rainfall, rising sea | Leave a Comment »