Moisture Advection along the 850 mb surface
Moisture advection is horizontal transport of moisture, which plays a very important role in the development of precipitation.
Moisture Convergence - A measure of the degree to which moist air is converging into a given area, taking into account the effect of converging winds and moisture advection.
as temperature rises during the day, relative humidity goes down because the moisture capacity of the air increases
as temperature falls overnight, relative humidty goes up because the moisture capcity of the air decreases ...
moisture content"Same as moisture.
moisture-continuity equation"The water vapor storage equation as applied to the atmosphere. The general form of the equation is written ...
Moisture Ridge - an axis of relatively high dew point values. This axis is sometimes referred to as a 'moist tongue'.
Mole - a unit of mass equal to the molecular weight of the substance ...
MOISTURE Refers to the water vapor content in the atmosphere, or the total water, liquid, solid or vapor, in a given volume of air.
MOISTURE AXIS / RIDGE- : An area of higher moisture values, usually in the form of a ridge of higher dewpoints at the surface or 850 mb. Low level moisture axes enhance atmospheric instability, which in turn promotes thunderstorm development.
moisture—An all-inclusive term denoting water in any or all of its three states.
Crop Moisture Index - In 1968, Palmer developed the index to assess short-term crop water conditions and needs across major crop-producing regions. This index is a useful tool in forecasting short-term drought conditions.
Live Moisture Maps: These maps portray experimental live vegetation moisture with values ranging from 50 to 250 percent of dry weight.
LLJ: An acronym for Low Level Jet. See Low Level Jet.
Fuel Moisture The water content of fuel particle expressed as a percent of the oven dried weight of the fuel particle. Fuel moisture observations are generally for the 10-hour time lag fuels (medium-sized roundwood 1/4" to 1" in diameter).
Soil Moisture
Water contained in the upper part of the soil mantle. This moisture evaporates from the soil and is the used and transpired by vegetation.
Solar Coordinates ...
Most moisture in the atmosphere comes from the oceans. At one time it was thought, most came from transpiration, the process by which water in plants and trees is transferred as water vapor to the atmosphere.
DEW: Moisture that condenses on objects near the ground.
DEWPOINT: The temperature to which the air must be cooled for water vapor to condense. The larger the spread of temperature and dewpoint, the drier the air.
Lacking moisture, especially having insufficient rainfall to support trees or woody plants.
Atmosphere(2) ...
Soil moisture Moisture contained in the soil above the water table, including water vapor which is present in the soil pores. In some cases this term refers strictly to the humidity contained in the root zone of plants.
soil moistureThe moisture of the soil measured near the surface. This includes soil wetness and soil water potential.soil temperatureThe temperature measured near the surface of the soil.
CrochetIn solar-terrestrial terms, a sudden deviation in the sunlit geomagnetic field (H component; see geomagnetic elements) associated with large solar flare X-ray emissionCrop Moisture IndexIn 1968, ...
A measure of the moisture deficit and atmospheric stability used in the prediction of the spread of wildfires. The Haines Index is based on the 850-700 hPa lapse rate and the 850 hPa dew point depression.
Precipitation Moisture that falls from clouds. Although clouds appear to float in the sky, they are always falling, their water droplets slowly being pulled down by gravity.
dew: condensed moisture (water vapor), appearing as small drops on a cool surface; usually occurs after or during a very warm day.
dew point: the certain temperature at which dew begins to form and water vapor chages to liquid form.
The term is used specifically to describe vertical transport of heat and moisture, especially by updrafts and downdrafts in an unstable atmosphere.
Relative HumidityA dimensionless ratio, expressed in percent, of the amount of atmospheric moisture present relative to the amount that would be present if the air were saturated.
2) Sum total for monthSMAThe Soil Moisture Accounting Model.Small CraftThere is no precise definition for small craft. Any vessel that may be adversely affected by Small Craft Advisory criteria should be considered a small craft.
Thermodynamic ChartA chart containing contours of pressure, temperature, moisture, and potential temperature, all drawn relative to each other such that basic thermodynamic laws are satisfied.
Examples include heat and moisture advection. ADVECTION FOG Fog that develops when warm moist air aloft moves over a colder surface, cooling that air to below its dew point. An example is Arctic Sea Smoke, a form of sea fog.
ANOMALOUS PROPAGATION (AP)Non-standard atmospheric temperature or moisture gradients will cause all or part of the radar beam to propagate along a non-normal path.
In the Pacific, air flows westward from the colder, eastern area to the warm, western ocean, where it acquires warmth and moisture and subsequently rises. A return flow aloft and subsidence over the eastern ocean complete the cell.
A moisture plume extends northeastward from the western tropical Pacific towards the general vicinity of the Hawaiian Islands. A strong blocking anticyclone is located in the Gulf of Alaska with a strong polar jet stream around its northern flank.
Patchy fog may also occur, particularly where air of different temperature and moisture content is interacting, which sometimes make these definitions difficult to apply in practice.
The index is composed of a stability term and a moisture term. The stability term is derived from the temperature difference at two atmosphere levels. The moisture term is derived from the dew point depression at a single atmosphere level.
Convection - Generally, transport of heat and moisture by the movement of a fluid. In meteorology, the term is used specifically to describe vertical transport of heat and moisture, especially by updrafts and downdrafts in an unstable atmosphere.
Convection - The transport of heat (and moisture) by the movement of a fluid. In meteorology, the term is used most often to describe the vertical transport of heat and moisture, especially by updrafts and downdrafts in an unstable atmosphere.
showers: the 'classic' growth/decay model of a Cumulus cloud , whereby a single moist convective cell develops in an airmass that is moderately unstable (CAPE values ~ 100 J/kg), provided of course that there is sufficient depth of moisture and there ...
Moisture and warmth as picked up from the warmer bodies of water. (Remember, the Great Lakes don't freeze!)
That air is now warmer and therefore rises in the atmosphere. This is called convective instability.
Moisture moves through successive layers of soil by gravity. In many agricultural soils the moisture is stored until it is removed by plant roots during the growing season.
Is a traditional indicator of the air's moisture content. It is the ratio of the amount of moisture actually in the air to the maximum amount of moisture which the air could hold at the same temperature.
The rain shadow results when moisture-laden air is forced to ascend the encircling mountains and thus drops most of that moisture on the windward side of the range summits. As the air descends from the ridge, it is drier and warmer.
in measuring this quantity and hence various types of hygrometers. These are: a) the psychrometer, which utilizes the thermodynamic method; b) the class of instruments which depends upon a change of physical dimension due to absorption of moisture ...
A large body of air with nearly uniform temperature and moisture content. There are six recognised airmasses that affect the British Isles denoted by their source region and then subsequent track.
The prevailing westerlies lose moisture in climbing the mountains, then warm up and dry out at the dry adiabatic rate on descent from the foothills at 9000 ft to the plains at 5000 ft.
THETA-E - A experimental rule for the amount of energy, considering CAPE and moisture, for initiating and / or sustaining convection. There are also other names given to similar experimental THETA calculations.
Advection- Horizontal movement of air, moisture, or heat.
Advection Fog- Fog formed by warm, humid air flowing over colder ground or water.
Air Mass- A large body of air with nearly uniform temperature and moisture content.
Bombs occur where there is an upper level trough and a strong low level moisture and temperature gradient. This often occurs between warm ocean water and colder adjacent landmass.
Air Mass: Body of air where the horizontal differences in temperature and moisture are relatively small. It normally has the horizontal dimension of hundreds of miles.
Advection The horizontal movement of an air mass that causes changes in the physical properties of the air such as temperature and moisture. Commonly used with temperatures, i.e., "warm air advection", or moisture, i.e.,"moisture advection".
Advection- the horizontal transport of air, moisture, vorticity or other atmospheric properties; commonly used in describing the transport of moisture and temperature.
Dew Point - The temperature at which water starts to condense out of a particular air mass. The dew point temperature changes only when the moisture content of the air changes. The higher the dew point, the greater the moisture content is in the air.
advection: Horizontal transport of temperature, pressure, moisture or some other atmospheric attribute solely by the wind.
aerosol: particulate matter put into the atmosphere. Examples are smoke and dust.
In hydrologic terms, rainfall that adds to the residual moisture of the basin in order to help recharge the water deficit. i.e; water absorbed into the soil that does not take the form of direct runoff.
BCKG ...
Air mass A large body of air that has similar horizontal temperature and moisture characteristics.
Air mass (ordinary) thunderstorm A thunderstorm produced by local convection within an unstable air mass.
Advection - Horizontal movement of air or atmospheric properties, such as temperature, moisture and vorticity, to indicate the trends of that property; "horizontal convection".
Alto- - Prefix used to define mid-level clouds.
A large volume of air with uniform properties of temperature and moisture.
Anabatic wind
A wind that blows up the slope of a hill or mountain due to the sun heating the land.
Humidity - relative humidity, usually. A way of expressing moisture content in the air.
Humidex - a pseudo temperature that reveals how much the air feels because of high humidity.
Lake-Effect Snow - Snow showers associated with a cP air mass to which moisture and heat are added from below as it traverses a large and relatively warm lake (such as one of the Great Lakes), rendering the air mass humid and unstable.
A body of air that extends hundreds or thousands of kilometers horizontally and is relatively uniform in temperature and moisture content (see continental arctic, continental polar, continental tropical, maritime polar, ...
Potential evapotranspiration (PE) The amount of moisture that, if it were available, would be removed from a given land area by evaporation and transpiration.
Relative Humidity - The ratio of water vapor contained in the air compared to the maximum amount of moisture that the air can hold at that particular temperature and pressure.
Ridge - An elongated area of high pressure.
Weather: the state of the atmosphere with respect to wind, temperature, cloudiness, moisture, pressure, etc.
Westerlies: the prevailing winds that blow from the west in the mid-latitudes.
Sounding: The vertical distribution of temperature, moisture, wind speed (and direction) over a location.
 See also: Air, Temperature, Surface, Water, Cloud
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