Climate Science

Climate Science
  • ray_johnson.jpg Planetary gases may have Earthly effect

    Venus has a pronounced "runaway greenhouse" effect. This is the same greenhouse gas, the rising levels of which concerns climate scientists today, Ray Johnson writes.

    October 2, 2011 4 Photos

  • ray_johnson.jpg Denmark: Unified on climate and energy plan for future

    The Commission on Climate Change Policy found that Denmark can remove fossil fuels from its energy system completely, including transportation, by 2050, without the need for nuclear energy or use of carbon capture and storage, writes Raymond Johnson.

    September 4, 2011 3 Photos

  • ray_johnson.jpg Past temperature changes have current meaning

    Data show that about 56 million years ago our planet got very warm. Is this the beginning of a fairy tale? Not really, says Ray Johnson.

    August 7, 2011 1 Photo

  • ray_johnson.jpg Higher temps, drought appear; may be new norm

    Actively publishing climate scientists have expressed concern about GHGs that are bringing about climate change. However, many in Congress do not believe that GHGs are a concern and no actions are being taken to reduce these levels.

    July 3, 2011 1 Photo

  • ray_johnson.jpg Climate change, extreme weather create perfect storms

    Since warm water heats the air above it — and warmer air holds more water vapor — the stage is set for events to happen, says columnist Ray Johnson.

    June 5, 2011 1 Photo

  • ray_johnson.jpg Earth's climate system: a study in process

    It may not fit with our impression or experience but globally, March was one of hottest months on record says columnist Ray Johnson.

    May 1, 2011 3 Photos

  • ray_johnson.jpg Climate Science: Indicators of Human Fingerprint on Climate Change

    Two central questions in Climate Science are: is our planet warming, and, if so, are human activities primarily responsible? Ray Johnson looks to the 2007 Report from the Intergovernmental Panel on Climate Change for answers.

    April 3, 2011 1 Photo

  • ray_johnson.jpg Fossil fuel dependence affecting climate change

    According to NOAA scientists temperatures last year were 1.34 degrees warmer than the global surface temperature from 1951 to 1980, says columnist Ray Johnson.

    February 6, 2011 4 Photos

  • ray_johnson.jpg Black Carbon: Part 2 — Changing Glaciers in Asia

    Reducing black carbon will give world leaders time to reduce the emission of carbon dioxide, the primary greenhouse gas of concern, columnist Ray Johnson points out.

    January 2, 2011 5 Photos

  • Black Carbon 1 Black Carbon: Impact on Climate Change and Human Health

    Black carbon or soot is a part of a larger type of emissions, both natural and manmade, called aerosols. These aerosols are very small particles that are suspended in our atmosphere. They can originate from natural sources such as salt spray formed during ocean wave processes, dust formed from the grinding and erosion of land surfaces, forest fires, and volcanic eruptions for example.

    December 5, 2010 3 Photos