- 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, ...
The visible and infrared imager carried aboard the DMSP satellites, which provides a variety of moderate (2. 7 km at nadir) and high-resolution (0. 6 km at nadir) imagery. During daytime passes, the OLS is normally configured to collect high-resolution visible imagery in conjunction with a single channel of moderate-resolution IR imagery. During nighttime passes the sensor configuration is usually reversed. Nighttime visible data are obtained with a high-performance photomultiplier tube that allows viewing in visible wavelengths of clouds and land areas illuminated by a quarter moon or brighter. City lights and the aurora can also be viewed quite clearly, with or without a moon.
Industry:Weather
In California, a strong northwest wind blowing from the Los Osos valley to the San Luis valley.
Industry:Weather
An instrument for rapidly obtaining samples of airborne dust; a type of dust counter. Particles pass through a cylindrical chamber and are drawn at high velocity through a narrow slit in front of a microscope cover glass. The fall in pressure due to expansion of the air passing through the slit causes the formation of a moisture film on the glass to which the dust adheres. An analysis for quantity and size of the particles on the cover glass is made with the aid of a microscope. The vacuum required to operate the instrument is developed by an attached hand pump.
Industry:Weather
The western boundary current of the North Pacific subpolar gyre. Fed by the Alaskan Stream and Kamchatka Current, the Oyashio flows southward along the Kuril Islands and the east coast of northern Japan to 39°–40°N and occasionally as far south as 36°N. Near southern Hokkaido (43°N) the current splits into two branches known as the First and Second Oyashio Intrusion. In the region east of Tsugaru Strait (41°N) it is dominated by eddies; one or two cyclonic (warm core) eddies are formed each year. Every six years or so one of them grows into a giant eddy that then dominates the region for a year. Farther downstream the Oyashio meets the northward flowing Kuroshio to form the Arctic Polar Front. Both currents maintain their own frontal systems, the Oyashio Front being characterized by temperatures of 2°– 8°C and feeding into the Aleutian Current, while the Kuroshio Front has temperatures of 10°– 15°C and feeds into the North Pacific Current.
Industry:Weather
A length scale for the description of turbulent flows under stable stratification, defined as the square root of the ratio between the dissipation rate of turbulent kinetic energy and the third power of the Brunt–Väisälä frequency. In flows where turbulence and wave motion are simultaneously present, the inverse of the Ozmidov scale defines the buoyancy wavenumber, which separates the buoyancy subrange from the inertial subrange.
Industry:Weather
An instrument, designed to detect lightning from space, that was launched on 3 April 1995 aboard the MicroLab-1 satellite into a near polar orbit at an inclination of 70°. The OTD was an engineering prototype of the Lightning Imaging Sensor that was subsequently launched on the TRMM satellite.
Industry:Weather
A lower tropospheric anticyclone in the subtropics of the western Pacific that often occurs during summer and influences conditions over Japan. Named after the Ogasawara Islands (27°N, 141°E), over which it is often centered.
Industry:Weather
An obsolete type of radar display in which the center of a PPI display is offset from the geometrical center of the oscilloscope.
Industry:Weather
