. Earth Science News .
New Observations On Properties Of Water
The study suggests that, unlike previously thought, the cloud crystals in cirrus clouds are not completely solid ice, but are covered with a layer of liquid water and sulphuric acid. The layer effects for instance the reflectivity of the clouds, and therefore the climate. It has also been observed that the rate of ozone loss is higher on liquid than on solid surfaces. The results therefore indicate that the ozone is destroyed in the cirrus clouds faster than conventionally has been thought.
The study suggests that, unlike previously thought, the cloud crystals in cirrus clouds are not completely solid ice, but are covered with a layer of liquid water and sulphuric acid. The layer effects for instance the reflectivity of the clouds, and therefore the climate. It has also been observed that the rate of ozone loss is higher on liquid than on solid surfaces. The results therefore indicate that the ozone is destroyed in the cirrus clouds faster than conventionally has been thought.
by Staff Writers
University of Helsinki, Finland (SPX) Dec 14, 2006
Experimental studies conducted by Ph.D. Anatoli Bogdan at the University of Helsinki, Finland, have received broad interest in the scientific world, as the results might have applications even in the cryopreservation of cells and tissues.

Bogdan's results show that mixture droplets consisting of sulphuric acid and water can be slowly cooled down to-140 degrees Celsius and then heated again without ice formation. The formation of ice is particularly problematic in cryopreservation, as the crystal formation damages cell structures.

Bogdan has conducted his experiments by cooling and heating droplets of 0.5-6 micrometers in diameter. His study focuses on two forms of water: low-density amorphous ice (LDA, or so-called glassy water) and highly viscous water (HVW), which is a liquid phase that LDA melts into.

Bogdan reports that HVW is not a new form of water as some scientists believed. Bogdan's study Reversible Formation of Glassy Water in Slowly cooling Diluted Drops has been published in Journal of Physical Chemistry in June 2006.

Bogdan himself applies his observations on the properties of water in cloud research, and he and his colleagues have recently published a study dealing with cirrus clouds (Formation of Low-Temperature Cirrus from H2SO4/H2O Aerosol Droplets, Journal of Physical Chemistry, November 2006).

Their study suggests that, unlike previously thought, the cloud crystals in cirrus clouds are not completely solid ice, but are covered with a layer of liquid water and sulphuric acid. The layer effects for instance the reflectivity of the clouds, and therefore the climate. It has also been observed that the rate of ozone loss is higher on liquid than on solid surfaces. The results therefore indicate that the ozone is destroyed in the cirrus clouds faster than conventionally has been thought.

Related Links
University of Helsinki
Water, Water Everywhere and Not A Drop To Drink...

Asian Haze Impacts On Australian Rainfall
Canberra, Australia (SPX) Dec 14, 2006
"Until now, there has been ample evidence that these particles have important effects on climate in the Northern Hemisphere but little such evidence in the Southern Hemisphere," says CSIRO Marine and Atmospheric Research scientist, Dr Leon Rotstayn.







  • Japan Tightens Building Rules After Quake Scandal
  • Durian's Aftermath: Disease Threatens Homeless Philippine Families
  • Thailand Adopts New Wireless Network For Disasters
  • Liquid-Crystal Rubber Suit Prevents Overheating

  • Gingerbread Houses Latest Victim Of Global Warming
  • Global Warming Of The Future Is Projected By Ancient Carbon Emissions
  • More Than 50 Tribes Convene on Global Warming Impacts
  • Wildlife Could Get Relief From US Supreme Court In Global Warming Case

  • COSMIC Provides Better Weather Forecasts, Climate Data
  • China To Launch 22 More Meteorological Satellites By 2020
  • Jason-1 Celebrates Five Years In Orbit - Ocean Data Continues To Flow
  • Accurate Weather Service For 2008

  • New Method For Chemical Production Developed In Just Two Years
  • Boeing Spectrolab Terrestrial Solar Cell Surpasses 40 Percent Efficiency
  • Brown Plans Green Future For Britain And Hikes Growth Forecast
  • Switchgrass Aims For Ethanol At One Dollar A Gallon

  • Malaria Kills 21 People In Flood-Hit Somalia, Toll Climbs To 141
  • Common PTSD Drug Is No More Effective Than Placebo
  • Freed China Activist Says AIDS Problem Far Exceeds Official Data
  • Africa Urged To Break Deafening Silence On AIDS

  • Tiny Bones Rewrite Textbooks
  • Extreme Life, Marine Style, Highlights 2006 Ocean Census
  • New Insights Into The Secret Lives Of Archaea
  • Finding An Answer To Darwin's Dilemma

  • Yellow River Pollution Getting Worse
  • Asian Cities Face Environmental Crises
  • US Regions Paying For Foreign Pollution Warns Business Group
  • Drop In Acid Rain Altering Appalachian Stream Water

  • Ancient Ape Ruled Out Of Man's Ancestral Line
  • Concrete Blocks Used In Great Pyramids Construction
  • Gendered Division Of Labor Gave Modern Humans Advantage Over Neanderthals
  • Genetic Variation Shows We're More Different Than We Thought

  • The content herein, unless otherwise known to be public domain, are Copyright 1995-2006 - SpaceDaily.AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA PortalReports are copyright European Space Agency. All NASA sourced material is public domain. Additionalcopyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by SpaceDaily on any Web page published or hosted by SpaceDaily. Privacy Statement