Station Model - Sea Level Pressure and Height of Pressure Surface

Sea Level Pressure and Height of Pressure Surface

See also: Sea level pressure

On the top right corner of the model for a surface weather map is the pressure, showing the last two integer digits of the pressure in millibars, or hectopascals, along with the first decimal. For instance, if the pressure at a certain location is 999.7 hPa, the pressure portion of the station model will read 997. Although the first digit or two of the pressure is left off, other nearby stations give away whether or not the first digits is a 10 or a 9. Most of the time, choosing first digits that would lead to a value nearest to 1000 works out best. The plotting of this value within the station model allows for the analysis of isobars on weather maps. Within maps which plot data on constant pressure surfaces, the pressure is replaced with the height of the pressure surface.

Read more about this topic:  Station Model

Famous quotes containing the words sea, level, pressure, height and/or surface:

    Times go by turns, and chances change by course,
    From foul to fair, from better hap to worse.

    The sea of Fortune doth not ever flow,
    She draws her favours to the lowest ebb;
    Her tides have equal times to come and go,
    Her loom doth weave the fine and Coarsest web;
    Robert Southwell (1561?–1595)

    If there is a price to pay for the privilege of spending the early years of child rearing in the driver’s seat, it is our reluctance, our inability, to tolerate being demoted to the backseat. Spurred by our success in programming our children during the preschool years, we may find it difficult to forgo in later states the level of control that once afforded us so much satisfaction.
    Melinda M. Marshall (20th century)

    Adolescence is when girls experience social pressure to put aside their authentic selves and to display only a small portion of their gifts.
    Mary Pipher (20th century)

    The prevalence of suicide, without doubt, is a test of height in civilization; it means that the population is winding up its nervous and intellectual system to the utmost point of tension and that sometimes it snaps.
    Havelock Ellis (1859–1939)

    All forms of beauty, like all possible phenomena, contain an element of the eternal and an element of the transitory—of the absolute and of the particular. Absolute and eternal beauty does not exist, or rather it is only an abstraction creamed from the general surface of different beauties. The particular element in each manifestation comes from the emotions: and just as we have our own particular emotions, so we have our own beauty.
    Charles Baudelaire (1821–1867)