![]() In the atmosphere, broad expanses of air with generally uniform temperature, humidity, and therefore density come in contact with other masses of air having different temperature, humidity, and density characteristics. The thick curved lines with triangles (spikes) and/or semi-circles on the map are air mass boundaries. Moving outward horizontally in any direction from the red L located in Lower Michigan, air pressure would. Idealized surface weather map showing some common map symbols.Ģ. Moving outward horizontally in any direction from the blue H positioned in Texas, air pressure would. The H’s and L’s identify centers of relatively high or low air pressure compared to their surroundings. The weather map symbols shown are those commonly seen on the Internet, television, and in newspapers. Describe general relationships between wind patterns and the high and low air pressure centers shown on weather maps.ġ.Ğxamine the surface weather map presented in Figure 1 of this investigation.Identify fronts appearing on the map, the weather likely to be occurring on either side of a front, and the motion of fronts.Decode the symbols appearing on a surface weather map and describe weather conditions at various locations.The surface weather map is a useful tool for depicting weather conditions over broad areas.Īfter completing this investigation, you should be able to: Weather is defined by various elements including air temperature, humidity, cloudiness, precipitation, air pressure, and wind speed and direction. Having all stations plotted on a map guides you as to where high- and low-pressure systems, fronts, and the like are located, which ultimately helps you decide where to draw them in.Weather is the state of the atmosphere at a particular time and place, mainly with respect to its impact upon life and human activity. But if you'll be analyzing a weather map by hand, station plot data is often the only information you start off with. If a weather map has already been analyzed, you'll find little use for the station plot data. Sky cover (also as one of NOAA's symbols).Current weather (marked as one of dozens of symbols established by National Oceanic and Atmospheric Administration or NOAA).Dewpoint temperature (degrees Fahrenheit). ![]() ![]() Air temperature (in degrees Fahrenheit).They include reports of a variety of weather data at that location: Station plots describe the weather at a station location. (When reading the chart, note whether the time of year is daylight saving time or standard time and read accordingly.)Īs seen here, some surface weather maps include groupings of numbers and symbols known as weather station plots. If you're in California (which is Pacific Coastal Time) and the UTC issue time is "1345Z" (or 1:45 p.m.), then you know that the map was constructed at 5:45 a.m. If you're new to Z time, using a conversion chart (like the one shown above) will help you easily convert between it and your local time. Known as Zulu or Z time, this figure is included on a weather map so that all meteorological weather observations (taken at different locations and therefore, in different time zones) can be reported at the same standardized times no matter what the local time might be. It tells you when the weather map was created and also the time when the weather data in the map is valid. One of the first coded pieces of data you might notice on a weather map is a 4-digit number followed by the letters "Z" or "UTC." Usually found at the map's top or bottom corner, this string of numbers and letters is a timestamp.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |