Navigation Links
2007 ozone hole 'smaller than usual'
Date:10/3/2007

The ozone hole over Antarctica has shrunk 30 percent as compared to last year's record size. According to measurements made by ESAs Envisat satellite, this years ozone loss peaked at 27.7 million tonnes, compared to the 2006 record ozone loss of 40 million tonnes.

Ozone loss is derived by measuring the area and the depth of the ozone hole. The area of this years ozone hole where the ozone measures less than 220 Dobson Units is 24.7 million sq km, roughly the size of North America, and the minimum value of the ozone layer is around 120 Dobson Units.

A Dobson Unit is a unit of measurement that describes the thickness of the ozone layer in a column directly above the location being measured. For instance, if an ozone column of 300 Dobson Units is compressed to 0 C and 1 atmosphere (the pressure at the Earths surface) and spread out evenly over the area, it would form a slab of ozone approximately 3mm thick.

Scientists say this years smaller hole a thinning in the ozone layer over the South Pole is due to natural variations in temperature and atmospheric dynamics (illustrated in the time series to the right) and is not indicative of a long-term trend.

"Although the hole is somewhat smaller than usual, we cannot conclude from this that the ozone layer is recovering already, Ronald van der A, a senior project scientist at Royal Dutch Meteorological Institute (KNMI), said.

"This year's ozone hole was less centred on the South Pole as in other years, which allowed it to mix with warmer air, reducing the growth of the hole because ozone is depleted at temperatures less than -78 degrees Celsius."

During the southern hemisphere winter, the atmospheric mass above the Antarctic continent is kept cut off from exchanges with mid-latitude air by prevailing winds known as the polar vortex. This leads to very low temperatures, and in the cold and continuous darkness of this season, polar stratospheric clouds are formed t
'/>"/>

Contact: Mariangela D'Acunto
mariangela.dacunto@esa.int
39-069-418-0856
European Space Agency
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. NASAs AURA satellite peers into Earths ozone hole
2. Scientists find Antarctic ozone hole to recover later than expected
3. Atmospheric ozone recovering in mid-latitudes, report shows
4. UCI scientists find chlorine may contribute to ozone formation
5. Ozone recovering, but unlikely to stabilize at pre-1980 levels, says study
6. Record ozone loss during 2006 over South Pole
7. In presence of fragrant cleaning products, air purifiers that emit ozone can dirty the air
8. Small, smaller, smallest -- The plight of the vaquita
9. Enzyme delivered in smaller package protects cells from radiation damage
10. Molecule that usually protects infection-fighting cells may cause plaque deposits inside arteries
11. Unusual antibiotics show promise against deadly superbugs
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/27/2015)... OXFORD, Conn. , Apr. 27, 2015 ... "Company"), a biometric authentication company focused on the growing ... will commence shipping to pre-order customers the first week ... pre-orders through the month of May. ... is a significant milestone for the company as Wocket® ...
(Date:4/20/2015)... April 20, 2015 Huntington Memorial Hospital is ... implant a new miniaturized, wireless monitoring sensor to manage ... first and only FDA-approved heart failure monitoring device that ... used by physicians to manage heart failure. ... implanted in the pulmonary artery (PA) during a non-surgical ...
(Date:4/14/2015)...  HYPR Corp. today announced it has joined ... tm , an industry consortium transforming online authentication ... technology and collaborate to deliver open specifications for ... and private, and easier to use. ... sensitive user information and eliminates the dependency on ...
Breaking Biology News(10 mins):Wocket, the Smartest Wallet You Will Ever Own, Announces Shipment to Pre-order Customers 2Wocket, the Smartest Wallet You Will Ever Own, Announces Shipment to Pre-order Customers 3Huntington Memorial Hospital Becomes First in the San Gabriel Valley to Offer Patients a New Heart Failure Monitoring Solution 2Huntington Memorial Hospital Becomes First in the San Gabriel Valley to Offer Patients a New Heart Failure Monitoring Solution 3HYPR Corp. Joins the FIDO Alliance 2HYPR Corp. Joins the FIDO Alliance 3
... cares for the offspring., Apart from the ones he sucks the ... is now creating a stir in the research world. The ... of organising childcare. In this fish species it is the father ... or more females and then looks after in a brood pouch ...
... 2009 Finishing your plate may soon take on a ... Montral School of Industrial Design, has fashioned edible plates that ... phase of her research, which has resulted in a book ... Edible, The Food as Material. "The idea of using ...
... Ga. University of Georgia scientists looking to understand ... found for the first time in plants an inverse ... has implications for diversity not only in plants, but ... published online in this week,s Proceedings of the ...
Cached Biology News:Brooding fishes take up nutrients from their own children 2Plate-eating good: Université de Montréal professor designs edible tableware 2Study finds new relationship between gene duplication and alternative splicing in plants 2Study finds new relationship between gene duplication and alternative splicing in plants 3
(Date:5/5/2015)... 2015  Renova™ Therapeutics, a biopharmaceutical company developing ... other chronic diseases, has engaged RAND Health Advisory ... reflect the healthcare patterns of multiple advanced heart ... used to characterize the impact the company,s lead ... groups of patients and the overall health care ...
(Date:5/5/2015)... DIEGO , May 5, 2015  A group ... formation of the Coma Research Institute, a non-profit organization ... patients and families suffering from disorders of consciousness.  ... - http://photos.prnewswire.com/prnh/20150504/213779LOGO   ... disorder of consciousness, in which no voluntary actions can ...
(Date:5/5/2015)... May 05, 2015 Research and Markets ... of the "Clinical Laboratory, Molecular Diagnostics and ... to 2019 - Global Version" report to ... in the area of molecular diagnostics and pharmacogenics ... evolving world market that is moving out of ...
(Date:5/5/2015)... , May 5, 2015  Orexigen Therapeutics, Inc. ... the first quarter 2015 on Friday, May 8 before ... a live webcast and conference call at 8:30 a.m. ... live call may be accessed by phone by calling ... 39586962. The webcast can be accessed live on the ...
Breaking Biology Technology:RAND Health Advisory Services modeling heart failure patient outcomes to inform potential impact of Renova Therapeutics lead product candidate 2RAND Health Advisory Services modeling heart failure patient outcomes to inform potential impact of Renova Therapeutics lead product candidate 3Biotechnology Executives and Medical Doctors Team Up to Tackle Coma and Disorders of Consciousness 2Biotechnology Executives and Medical Doctors Team Up to Tackle Coma and Disorders of Consciousness 3Biotechnology Executives and Medical Doctors Team Up to Tackle Coma and Disorders of Consciousness 4Biotechnology Executives and Medical Doctors Team Up to Tackle Coma and Disorders of Consciousness 5Global Clinical Laboratory, Molecular Diagnostics and Genomic Testing Services Market Trends and Forecast 2015 to 2019 2
... ... , ... 17, 2010 -- iCorps Technologies , a leader in delivering solid, business-driven IT ... Computing Technology Industry Association (CompTIA) is the leading trade association for the world,s information ...
... MOORESVILLE, N.C. , Feb. 17 Anpath Group, Inc. ... today reported financial results for its fiscal 2010 third quarter which ... Quarter Results: , The Company continued a positive trend ... for the third quarter were $66,988 compared with revenues ...
... ... products that save money in an uncertain economy. , ... Glenview, IL (Vocus) Feb. 17, 2010 -- In a tough economic ... Program. , , ,Our goal is to have no waste, and we are close, said ...
Cached Biology Technology:iCorps Technologies Earns CompTIA Security Trustmark™ 2iCorps Technologies Earns CompTIA Security Trustmark™ 3Anpath Group, Inc. Announces Fiscal 2010 Third Quarter Results 2Anpath Group, Inc. Announces Fiscal 2010 Third Quarter Results 3Anpath Group, Inc. Announces Fiscal 2010 Third Quarter Results 4Abt Electronics Becoming the Green Giant of Independent Retailers 2Abt Electronics Becoming the Green Giant of Independent Retailers 3
... Goat polyclonal to BRF2 Immunogen ... acids 406-419 of Human BRF2. Reactivity / ... in other species. Background Information BRF2 ... RNA polymerase III transcription factor complex required for ...
... 20X Immunogen Proprietary ... concentration for use in KinEASE™ 645nm ... Quality Assurance Routinely evaluated ... assays. Stability ...
Kinase Buffer can be used to assay protein kinase activity...
Goat polyclonal to SPFH2 ( Abpromise for all tested applications). Antigen: Synthetic peptide: EDEPLETATKEN, corresponding to C terminal amino acids 328-339 of Human SPFH2 Entrez Gene ID: 11...
Biology Products: