Climate Change

2011-01-28T11:10:00.000-08:00

How to adopt green technology to prevent climate change in our earth, some of there example in european northern cities. This all clean technology for the betterment of our childern and all other creatures of earth. No matter what we do, slow Climate change will occured. To better understand watch this video. Reference http://www.youtube.com/watch?v=VpCLfd-zw48

Rising Arctic Storm Due To Climate Change

2011-01-15T13:27:00.000-08:00

In both polar regions, there is strong evidence of the ongoing
impacts of climate change on terrestrial and freshwater
species, communities and ecosystems (very high confidence).
Recent studies project that such changes will continue (high
confidence), with implications for biological resources and
globally important feedbacks to climate (mediumconfidence).
Strong evidence exists of changes in species’ ranges and
abundances and in the position of some tree lines in the Arctic
(high confidence). An increase in greenness and biological
productivity has occurred in parts of theArctic (high confidence).
Surface albedo is projected to decrease and the exchange of
greenhouse gases between polar landscapes and the atmosphere
will change (very high confidence). Although recent models
predict that a small net accumulation of carbon will occur inArctic
tundra during the present century (low confidence), higher
methane emissions responding to the thawing of permafrost and
an overall increase in wetlands will enhance radiative forcing
(medium confidence). [15.4.1, 15.4.2, 15.4.6]. For more reading Click here.
NASA Study Finds Rising Arctic Storm Activity Sways Sea Ice, Climate
A new NASA study shows that the rising frequency and intensity of arctic storms over the last half century, attributed to progressively warmer waters, directly provoked acceleration of the rate of arctic sea ice drift, long considered by scientists as a bellwether of climate change. For more reading Click here.

Arctic Ice In Death Spiral (News)

2011-01-12T11:56:00.000-08:00

More than 2.5 million square kilometres
of the Arctic Ocean have been opened
up to the heat of the 24-hour summer sun.

At present we have warming in the Arctic at at least twice the global rate.
This warming is being accelerated by the sea ice retreat in a process of
positive feedback. As the sea ice melts and gives way to water, the surface
albedo (reflectivity) changes, more heat energy is absorbed which enhances
the warming and melting. The whole region is flipping into a hotter state
- and we could ultimately have an ice-free Arctic - melting permafrost would
release vast quantities of methane - and it would be the end of the world as
we know it.
For more about it click here

Global Warming Vs Cold Weather

2010-12-27T13:46:00.000-08:00

Lund, Sweden December 2010

The world warmest globally recoded years are 1998 & 2005, the current year 2010 on the track to join this warmest year table. On the other hand Europe and other part of the world facing colder-than-normal winter this year.

The word Global warming creating confusion in mind. Global warming one of the hottest topic now a days. According to the 2007 Fourth Assessment Report by the Intergovernmental Panel on Climate Change (IPCC), global surface temperature increased 0.74 ± 0.18 °C (1.33 ± 0.32 °F) during the 20th century and different Climate model projections summarized in the latest IPCC report indicate that the global surface temperature is likely to rise a further 1.1 to 6.4 °C (2.0 to 11.5 °F) during the 21st century. (For IPCC report please Click Here)

If average surface temperature of the earth is increasing then why Europe and other part of the world in 2010 experiencing colder-than-normal winter? Peoples are thinking whether the Global Warming threat ends?

Global Warming refers to changes in frequency and intensity of extreme weather events (heat waves, high precipitation, floods, droughts, Record Snowfall). Some of these extremes weather events recorded in 2010

Unusually heavy monsoons in Pakistan that brought the worst flooding in that country's history.
A record-smashing heat wave in Russia last summer.
a season record snowfall for Washington, D.C.

Global Warming News

2010-11-12T09:53:00.000-08:00

Report: Global Warming Issue From 2 Or 3 Years Ago May Still Be Problem

WASHINGTON—According to a report released this week by the Center for Global Development, climate change, the popular mid-2000s issue that raised awareness of the fact that the earth's continuous rise in temperature will have catastrophic ecological effects, has apparently not been resolved, and may still be a problem.

Source and for detali story: http://www.theonion.com/articles/report-global-warming-issue-from-2-or-3-years-ago,18431/?utm_source=recentnews

NOVEMBER 10, 2010 | ISSUE 46•45

Hydrological Cycle (Feedback)

2010-11-10T13:29:00.000-08:00

First Phase

1. As Surface temperature increase its increase the evaporation (+ve feedback)

2. As evaporation increase its decrease the surface temperature (-ve feedback)

3. As evaporation increase, water vapour in the atmosphere also increase ( +ve feedback)

4. With increase in water vapour in atmosphere, surface temperature also increase. (+ve feedback)

Second Phase

5. Water vapour increase, relative humidity also increase (+ve feedback)

6. Relative humidity lead to increase cloud cover (+ve feedback)

7. But due to condensation increase in cloud cover reduce water content in the atmosphere (-ve feedback)

8. Surface temperature decrease with increase in relative humidity (-ve feedback)

Third Phase

9. Greater cloud cover mean low radiation (-ve feedback)

10. Also greater cloud cover leads to low incoming solar radiation (-ve feedback)

11. High radiation means high surface temperature(+ve feedback)

12. But high outgoing radiation reduce surface temperature (-ve feedback)

13. On the other hand high incoming radiation increase surface temperature (+ve feedback)

Source: Guy Schurger lecture

Environmental change impacts on major biomes

2010-11-02T10:10:00.001-07:00

1) Amazon tropical rainforest

+2.5 degrees C

Increase Total NPP 0.149

Decrease Tropical broadleaved evergreen -0.087

Decrease Tropical broadleaved raingreen 0.062

Decrease Warm grass -0.168

Precipitation -10%

No changes at all

CO2x2 (Double)

Increase Total NPP 0.449

Increase Tropical broadleaved evergreen 0.255

Increase Tropical broadleaved raingreen 0.193

No changes Warm grass

Combined

Increase Total NPP 0.309

Increase Tropical broadleaved evergreen 0.165

Increase Tropical broadleaved raingreen 0.144

Slight increase Warm grass 0.002

Environmental change impacts on major biomes

2010-11-02T10:09:00.000-07:00

1) Southern Sweden temperate forest

+4 degrees C

decrease in total NPP (0.551 -0.46=0.091kgC/m2yr)

Temperate needleleved evergreen (0.326-0.247=0.079)

Temperate broadleafed summergreen (0.182-0.166=0.016)

Cool grass (0.043-0.047=-0.004)

→ all PFTs decreasing

Precipitation +10%

decrease in total NPP (0.551 -0.575=-0.024kgC/m2yr)

Temperate needleleved evergreen (0.326-0.336=-0.01)

Temperate broadleafed summergreen (0.182-0.194=-0.012)

Cool grass (0.043-0.045=-0.002)

→ almost no changes

CO2x2 (Double)

decrease in total NPP (0.551 -0.746=-0.195kgC/m2yr)

Temperate needleleved evergreen (0.326-0.267=0.059)

Temperate broadleafed summergreen (0.182-0.267=-0.085)

Cool grass (0.043-0.056=-0.013)

→ all PFTs increasing

Combined

increase in total NPP (0.551 -0.71=-0.159kgC/m2yr)

Temperate needleleved evergreen (0.326-0.378=-0.052)

Temperate broadleafed summergreen (0.182-0.272=-0.079)

Cool grass (0.043-0.06=-0.017)

→ all PFTs increasing

Siberia Boreal

2010-10-30T07:48:00.000-07:00

Siberia Boreal (Environmental Impacts on major biomes)

+5 degrees C

increasing in total NPP (0.392 -0.426= - 0.034kgC/m2yr)

Cool grass (0392-0.426=-0.034)

→ all PFTs increasing

Precipitation +20%

increasing in total NPP = - 0.008kgC/m2yr)

Cool grass = - 0.008)

→ all PFTs increasing

CO2x2

increasing in total NPP =- 0.081kgC/m2yr)

Cool grass =-0.081)

→ all PFTs increasing

Combined

increase in total NPP = -0.142kgC/m2yr)

Cool grass =-0.142

IPCC at the High Level Summit on Climate Change

2010-10-30T06:59:00.000-07:00

Nearly 100 world leaders accepted UN Secretary-General Ban Ki-moon's invitation to participate in an historic Summit on Climate Change. During the opening ceremony, the Chairman of the IPCC, Mr R.K. Pachauri addressed the Summit.

Summit of Climate Change

“Failure to reach broad agreement in Copenhagen would be morally inexcusable, economically short-sighted and politically unwise,” the Secretary-General said in his opening address. “Now is the moment to act in common cause.”

"There is little time left. The opportunity and responsibility to avoid catastrophic climate change is in your hands," Mr. Ban said, closing the day-long Summit on Climate Change.

The Summit marked the first UN visit for the Presidents of China and the United States as well as the newly elected Prime Minister of Japan.

Reasons of Ocean Change

2010-10-30T06:50:00.000-07:00

A successful attempt has been made to assess the causes of observed sea level rise. During the peaked of last ice-age (21,000 years ago) the average global sea level was 120m lower than today. As fresh water continue to add into the oceans from melting down of ice sheets and glaciers, sea level rose over a meter per century. Global mean sea level change results from two major processes, mostly related to recent climate change, that alter the volume of water in the global ocean: i) thermal expansion, and ii) the exchange of water between oceans and other reservoirs (glaciers and ice caps, ice sheets, other land water reservoirs - including through anthropogenic change in land hydrology, and the atmosphere).Vertical land movements such as resulting from glacial isostatic adjustment (GIA), tectonics, subsidence and sedimentation influence local sea level measurements but do not alter ocean water volume; nonetheless, they affect global mean sea level through their alteration of the shape and the volume of the ocean basins containing the water.

Meier.F and J.Whar in 2002 have explained this in much more detail in their article "Sea level is rising: Do we know why?" which can be found on "PNAS May 14, 2002 vol. 99 no. 10, 6524–6526.". So I would recommend this as further reading.