Navigation Links
Scientists study possible responses to climate emergencies
Date:9/1/2009

eport assesses the two main kinds of geoengineering techniquesCarbon Dioxide Removal (CDR) and Solar Radiation Management (SRM). CDR techniques address the root of the problem rising CO2and so have fewer uncertainties and risks, as they work to return the Earth to a more normal state. They are therefore considered preferable to SRM techniques, but none has yet been demonstrated to be effective at an affordable cost, with acceptable environmental impacts, and they only work to reduce temperatures over very long timescales.

SRM techniques act by reflecting the sun's energy away from Earth, meaning they lower temperatures rapidly, but do not affect CO2 levels. They therefore fail to address the wider effects of rising CO2, such as ocean acidification, and would need to be deployed for a very long time. Although they are relatively cheap to deploy, there are considerable uncertainties about their regional consequences, and they only reduce some, but not all, of the effects of climate change, while possibly creating other problems. The report concludes that SRM techniques could be useful if a threshold is reached where action to reduce temperatures must be taken rapidly, but that they are not an alternative to emissions reductions or CDR techniques.

"If we are confronted with a climate emergency and decide we cannot tolerate any more warming, engineering some system to deflect more sunlight back to space would likely be the primary option available to cool the Earth quickly," said Caldeira. "Of course, we need to make sure that tinkering with our environment in this way would not just cause bigger problems. We need to study these options now so that we can understand the pluses and minuses in case we need to deploy them."

Professor Shepherd added, "None of the geoengineering technologies so far suggested is a magic bullet, and all have risks and uncertainties associated with them. It is essential that we strive to cut emissions now, but we
'/>"/>

Contact: Ken Caldeira
kcaldeira@ciw.edu
650-704-7212
Carnegie Institution
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. UK scientists working to help cut ID theft
2. Scientists show that mitochondrial DNA variants are linked to risk factors for type 2 diabetes
3. Comet probes reveal evidence of origin of life, scientists claim
4. Scientists link fragile X tremor/ataxia syndrome to binding protein in RNA
5. Male elephants get photo IDs from scientists
6. Scientists retrace evolution with first atomic structure of an ancient protein
7. Muscle mass: Scientists identify novel mode of transcriptional regulation during myogenesis
8. Carnegie Mellon scientists develop nanogels that enable controlled delivery of carbohydrate drugs
9. Clemson scientists shed light on molecules in living cells
10. Scientists tackle mystery mountain illness
11. T. rex quicker than Becks, say scientists
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/10/2014)... 2014 NXT-ID, Inc., (OTCQB: NXTD) a biometric authentication company focused ... Gino Pereira was interviewed on July 1 st ... Florida . Mr. Pereira discusses the company,s next generation ... and how the Wocket™ aims to replace a traditional wallet ... Cedric Harris tells Gino he has never heard of ...
(Date:7/10/2014)... DUBLIN , July 3, 2014 ... the addition of the "Global Gesture Recognition ... Market - Forecasts to 2020" report to ... Global Gesture Recognition & Touch-Less Sensing ... been around for a while, but the companies ...
(Date:7/10/2014)... 7, 2014 According to a ... Access Control Systems Market Global Forecast, Market Share, Size, ... Electronic Access Control systems market was valued at USD ... at a CAGR of 12.6% from 2014 to 2019, ... in 2019. Browse the full Electronic Access ...
Breaking Biology News(10 mins):Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 2Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 3Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 4Global Gesture Recognition & Touch-Less Sensing (2D, 3D, Ultrasonic, IR, Capacitive) Market - Forecasts to 2020 2Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 2Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 3Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 4Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 5
... New evidence reported in the August issue of Cell Stem ... on how the HIV/AIDS virus leads to learning and memory ... on the surface of the virus not only kills some ... also prevents the birth of new brain cells by crippling ...
... two proteins that bind to messenger RNA, a molecule ... into proteins, triggers the appearance of fragile X-associated tremor/ataxia ... that causes fragile X syndrome in children, said researchers ... University School of Medicine in a report that appears ...
... Aug. 15, 2007 A mysterious epidemic of thyroid ... be linked to exposure to dust shed from flame ... scientists are reporting in a study scheduled for publication ... Technology, a semi-monthly journal from the American Chemical Society, ...
Cached Biology News:HIV is a 'double hit' to the brain 2Researchers identify proteins involved in new neurodegenerative syndrome 2Study links cat disease to flame retardants in furniture and to pet food 2Study links cat disease to flame retardants in furniture and to pet food 3
(Date:7/10/2014)... Ouagadougou, Burkina Faso (PRWEB) July 10, 2014 ... Burkina Faso, today have access to an additional ... to increase access to contraception at all levels ... combining a lower-dose formulation of a widely used ... injection system. , Burkina Faso is the first ...
(Date:7/10/2014)... UK (PRWEB) July 10, 2014 ... 21st Century Medicine Forum on ‘Commercialising Longevity Research’ ... and entrepreneurs to the London Bioscience Innovation Center ... Research Foundation and Aging Analytics Ltd. The meeting ... investment in translational research for age-related disease, as ...
(Date:7/10/2014)... Terascala, the industry leader in ... a former vice president of product management for Flexera ... of marketing. Terascala’s software when combined with leading compute ... highest performance and most reliable solutions for processing big ... channel expansion and broaden its product portfolio. His leadership ...
(Date:7/10/2014)... Robert Harman, DVM, Founder and CEO of Vet-Stem, Inc., ... the relaunch of his highly informative blog, now named Stem ... What are Stem Cells ?” Dr. Harman’s purpose for ... the basics of stem cell therapy so that pet owners ... treatment when considering regenerative medicine. , A veterinarian by trade, ...
Breaking Biology Technology:Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 2Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 3Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 4Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 5Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 6DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 2DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 3DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 4DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 5DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 6Terascala Expands Executive Team 2Terascala Expands Executive Team 3Robert Harman, DVM Talks About What Stem Cells are in His Latest Blog Series for Vet-Stem, Inc. 2Robert Harman, DVM Talks About What Stem Cells are in His Latest Blog Series for Vet-Stem, Inc. 3
... Dec. 10, 2010 bioTheranostics, a bioMerieux company that ... management, announced today new findings from a clinical study ... molecular oncology test. Data from the study were presented ... Symposium (SABCS). The company also announced ...
... Agrivida, Inc. today announced a collaboration with ... will provide low-cost sugars for a variety of ... Syngenta licenses to Agrivida access to crop technology ...   Agrivida will bolster its existing ...
... athletes reach the top of their game when preparing ... performance sports agency, has reached an agreement to become ... by Argento Diagnostics to improve training programmes for athletes. ... proteins which reveal details about the condition of the ...
Cached Biology Technology:bioTheranostics' Breast Cancer Index(SM) Predicts Risk for Late Recurrence in Early Stage ER-Positive Breast Cancer Patients 2bioTheranostics' Breast Cancer Index(SM) Predicts Risk for Late Recurrence in Early Stage ER-Positive Breast Cancer Patients 3Agrivida Announces Collaboration With Syngenta Ventures to Deliver Low-Cost Sugars for Cellulosic Biofuels and Biochemicals 2Medical science helps UK athletes reach peak performance 2Medical science helps UK athletes reach peak performance 3