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Surface wind direction and speed is also forecast on this type of chart. Wave prognostic charts show the expected sea state at some future time. [ 2 ] Low-level prognostic charts used by aviators show the forecast between the Earth's surface and 24,000 feet (7,300 m) above sea level over the next two days.
A surface weather analysis for the United States on October 21, 2006. By that time, Tropical Storm Paul was active (Paul later became a hurricane). Surface weather analysis is a special type of weather map that provides a view of weather elements over a geographical area at a specified time based on information from ground-based weather stations.
The charts are published "in accordance with Interagency Air Cartographic Committee specifications and agreements, approved by the Department of Defense and the Federal Aviation Administration". The legend of an aeronautical chart lists many of the symbols, colors and codes used to convey information to the map reader.
Also actiniform. Describing a collection of low-lying, radially structured clouds with distinct shapes (resembling leaves or wheels in satellite imagery), and typically organized in extensive mesoscale fields over marine environments. They are closely related to and sometimes considered a variant of stratocumulus clouds. actinometer A scientific instrument used to measure the heating power of ...
For example, an H represents high pressure, implying good and fair weather. An L represents low pressure , which frequently accompanies precipitation. Various symbols are used not just for frontal zones and other surface boundaries on weather maps, but also to depict the present weather at various locations on the weather map.
Surface texture symbols Y14.38–2007: Abbreviations and acronyms for use on drawings and related documents Y14.4M–1989: Pictorial drawing Y14.41–2003: Digital product definition data practices Y14.42–2002: Digital approval systems Y14.5–2018: Dimensioning and tolerancing Y14.5.1M–1994
Click through the see images of the symbols: Show comments. Advertisement. Advertisement. Holiday Shopping Guides. See all. AOL.
Airport Surface Detection Equipment, Model X: ASDL Aeronautical satellite data link ASI Airspeed indicator: ASL Above sea level [1] ASLO Aircraft Security Logging Overview ASM Airspace management: ASM Available seat miles A-SMGCS Advanced Surface Movement Guidance and Control System: ASOS Automated Surface Observation System assy Assembly: A/S ...