- 行业: Weather
- Number of terms: 60695
- Number of blossaries: 0
- Company Profile:
The American Meteorological Society promotes the development and dissemination of information and education on the atmospheric and related oceanic and hydrologic sciences and the advancement of their professional applications. Founded in 1919, AMS has a membership of more than 14,000 professionals, ...
A system for expressing distance, speed, and acceleration in which 1) the distance of one minute of arc along a meridian or great circle is one nautical mile; 2) a nautical mile per hour is a knot; 3) a nautical mile per hour per hour is the acceleration in knots per hour. Although the nautical system originated with marine operations, it has been adopted to report winds and aircraft speeds.
Industry:Weather
The length of one minute of arc along any great circle on the earth's surface. Since this actual distance varies slightly with latitude, a nautical mile by international agreement is defined as 1852 meters (6076. 103 feet or 1. 1508 statute miles). Compare mile.
Industry:Weather
Period of the year characterized by weather conditions of a particular type over a large area of the globe. The term is used in long-range forecasting in the former USSR.
Industry:Weather
Period of time during which the essential characteristics of a particular synoptic situation persist over a large area of the globe. The term is used in long-range forecasting in the former USSR.
Industry:Weather
A large area of the globe in which synoptic processes possess well-defined characteristics that are independent of processes occurring in other areas of the globe. The term is used in long-range forecasting in the former USSR.
Industry:Weather
Conceptualization of the processes associated with the production and loss of sulfur gases in the atmosphere. The cycle consists of 1) the emission of reduced sulfur gases (such as dimethyl sulfide, carbonyl sulfide) by biological material; 2) the oxidation of these gases to sulfur dioxide or sulfuric acid in the atmosphere; and 3) the subsequent deposition of these acidic species to the earth's surface.
Industry:Weather
An orthogonal, or mutually perpendicular, system of curvilinear coordinates for the description of fluid motion, consisting of an axis ''t'' tangent to the instantaneous velocity vector and an axis ''n'' normal to this velocity vector to the left in the horizontal plane, to which a vertically directed axis ''z'' may be added for the description of three-dimensional flow. Such a coordinate system often permits a concise formulation of atmospheric dynamical problems, especially in the Lagrangian system of hydrodynamics.
Industry:Weather
The permanent magnetism of a rock. A rock may also have other types of magnetism, such as induced magnetism that may change when the rock is moved to another location in the geomagnetic field. The NRM does not change with another location but is “frozen” into the rock.
Industry:Weather
Streamflow that occurs from a basin under natural conditions, that is, without regulation by hydraulic structures.
Industry:Weather
Natural conditions in a channel that make the water level at, or upstream of, that location a stable indicator of the discharge. Commonly, this control will be a condition where critical depth occurs due to a change from a mild to a steep slope.
Industry:Weather
