Cloud Types: common cloud classifications Cloud Types common cloud classifications Further classification identifies clouds by height of cloud base. For example, cloud names containing the prefix "cirr-", as in cirrus clouds, are located at high levels while cloud names with the prefix "alto-", as in altostratus, are found at middle levels.
List of cloud types Clouds are formed in the Earth's atmosphere when water evaporates into vapor from oceans, lakes, ponds, and even streams and rivers; and by evaporation or transpiration over moist areas of Earth's land surface. The vapor rises up into colder areas of the atmosphere due to convective, orographic, or frontal lifting. This subjects the rising air to a process called adiabatic cooling. The water vapor attaches itself to condensation nuclei which can be anything from dust to microscopic particles of salt and debris. Once the vapor has been cooled to saturation, the cloud becomes visible. All weather-producing clouds form in the troposphere, the lowest major layer of the atmosphere. However very small amounts of water vapor can be found higher up in the stratosphere and mesosphere and may condense into very thin clouds if the air temperatures are sufficiently cold. The nephology branch of meteorology is focused on the study of cloud physics.
Global Incident Map Displaying Terrorist Acts, Suspicious Activity, and General Terrorism News
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Tracking marine debris from Japanese tsunami Video: Tsunami Aftermath: Marine Debris | Download: 1280 x 720 (70 MB) Ongoing efforts to update and refine computer models with wind speed and ocean current data is leading to a better understanding of how fast tsunami-generated debris may travel across the Pacific. Visit NOAA's Marine Debris Program for the latest information and modeling maps. Audio Podcast: The powerful Japanese earthquake and resulting tsunami in March, 2011, washed untold tons of marine debris into the Pacific Ocean. Carey Morishige, Pacific Islands Regional Coordinator for the NOAA Marine Debris Program, explains where this debris may be, where it's heading, what's being done about it, and what you can do to help.
Estimation of debris path created with OSCURS model. The colors are years after the tsunami. Click through for more information. Map courtesy of J. Churnside (NOAA OAR) and created through Google. Japanese tsunami debris link roundup
Earthquakes, floods, and other disasters can seriously disrupt normal life. Services may not be available, transportation may be cut off and roads may be blocked. In some cases, you may be forced to evacuate. Be ready to respond to any situation by assembling and maintaining a Disaster Supplies Kit. WATER Plan on one gallon of water per person per day. Disaster Supplies Kit
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Balancing Forces: Normal 2012 Hurricane Outlook
National Hurricane Center