Table 6.27 -- EDCS attributes whose label begins with W
| Label | Definition | Attribute value type | EQ label | Code |
| WAKE_INTENSITY | A number between 0 and 1 inclusive representing the linearly-scaled fraction of the production rate of <WATER_BODY_SURFACE> wakes induced by the movement of a <VESSEL> relative to <WATER_WAVE>s and <WATER_CURRENT>s. Zero means no wake at all and one means maximum intensity. | REAL | PURE_NUMBER | 1544 |
| WALL_PREDOMINANT_PATTERN | The predominant visual pattern of the exterior <SURFACE>s of the <EXTERIOR_WALL>s of a <STRUCTURE>. | ENUMERATION | 1545 | |
|
WALL_PREDOMINANT_SURFACE- _MATERIAL |
The predominant outermost <MATERIAL> covering the <SURFACE> of a <WALL>. | ENUMERATION | 1546 | |
| WALL_TYPE | The type of a <WALL>. | ENUMERATION | 1547 | |
|
WATER_ACOUSTIC_TRANS_LOSS- _MODEL |
A type of <<ACOUSTIC_TRANSMISSION_LOSS>> model or database for <WATER_BODY>s. | ENUMERATION | 1548 | |
|
WATER_BODY_ACOUSTIC_AMBIENT- _NOISE_SPECTRAL_MODEL |
A type of acoustic ambient noise spectral model or database for <WATER_BODY>s. | ENUMERATION | 1549 | |
|
WATER_BODY_FLOOR_CLUTTER- _DENSITY |
The areal density of <OBJECT>s on a <WATER_BODY_FLOOR_REGION> that appear to acoustic sensors to be, but that are not, <EXPLOSIVE_MINE>s. | REAL | AREAL_ENTITY_DENSITY | 1550 |
| WATER_BODY_FLOOR_CONFIGURATION | The type of a <WATER_BODY_FLOOR_TOPOGRAPHIC_CONFIGURATION>. | ENUMERATION | 1551 | |
| WATER_BODY_FLOOR_GRAZING_ANGLE | The mean angle between the horizontal plane at a <WATER_BODY_FLOOR> and the scattered acoustic rays. | REAL | PLANE_ANGLE | 1552 |
| WATER_BODY_FLOOR_MATERIAL_TYPE | The predominant type of <MATERIAL> composing a <WATER_BODY_FLOOR>. | ENUMERATION | 1553 | |
| WATER_BODY_FLOOR_MORPHOLOGY | The morphology of a <WATER_BODY_FLOOR>. | ENUMERATION | 1554 | |
| WATER_BODY_FLOOR_OBJECT_TYPE | The type of a <TERRAIN_SURFACE_OBJECT> that is located on a <WATER_BODY_FLOOR>. | ENUMERATION | 1555 | |
|
WATER_BODY_FLOOR_ROUGHNESS- _CATEGORY |
A qualitative characterization of the roughness of a <WATER_BODY_FLOOR> at spatial frequencies relevant to <EXPLOSIVE_MINE> detection; the water body floor roughness category. | ENUMERATION | 1556 | |
| WATER_BODY_LUMINESCENCE | The rate of photon emittance of visible light from <LIVING_ORGANISM>s in a <WATER_BODY>; the water body luminescence. | REAL | VOLUMETRIC_ENTITY_EMIT_RATE | 1557 |
|
WATER_BODY_PROPERTY_SET- _ACOUSTIC_TYPE |
The type of the acoustic properties of a <WATER_BODY_ACOUSTIC_PROPERTY_SET>. | ENUMERATION | 1558 | |
| WATER_BODY_SOUND_SPEED | The speed of sound in a <WATER_BODY>. | REAL | SPEED | 1559 |
|
WATER_BODY_SURFACE_GRAZING- _ANGLE |
The mean angle between the horizontal plane at a <WATER_BODY_SURFACE> and scattered acoustic rays; the water body surface grazing angle. | REAL | PLANE_ANGLE | 1560 |
|
WATER_BODY_SURFACE_ICE- _FRACTION |
A number between 0 and 1 inclusive representing the fraction of a <WATER_BODY_SURFACE> that is covered by <ICE>. Zero means no <ICE> is present and one means the <WATER_BODY_SURFACE> is completely covered. | REAL | PURE_NUMBER | 1561 |
|
WATER_BODY_SURFACE- _INSTANTANEOUS_HEIGHT |
The instantaneous height of a <WATER_BODY_SURFACE> above the local mean level, where the local mean level is defined as MSL corrected for the <TIDE>. | REAL | LENGTH | 1562 |
|
WATER_BODY_SURFACE- _OBSERVATION_POINT |
The <LOCATION> relative to a <WATER_BODY_SURFACE> at which the characteristics of <WATER> are observed, measured, or collected. | ENUMERATION | 1563 | |
| WATER_BODY_SURFACE_TEMPERATURE | The <<WATER_BODY_TEMPERATURE>> measured, estimated, or predicted at or near a <WATER_BODY_SURFACE>. | REAL | THERMO_TEMPERATURE | 1564 |
|
WATER_BODY_SURFACE_U_WIND- _STRESS |
The U component (geodetic west-east direction, where east is positive) of the stress on a <WATER_BODY_SURFACE> induced by <WIND>. | REAL | MOMENTUM | 1565 |
|
WATER_BODY_SURFACE_V_WIND- _STRESS |
The V component (geodetic south-north direction, where north is positive) of the stress on a <WATER_BODY_SURFACE> induced by <WIND>. | REAL | MOMENTUM | 1566 |
| WATER_BODY_SURFACE_WIND_STRESS | The total stress on a <WATER_BODY_SURFACE> induced by <WIND>. | REAL | MOMENTUM | 1567 |
| WATER_BODY_TEMPERATURE | The temperature of a <WATER_BODY>. | REAL | THERMO_TEMPERATURE | 1568 |
|
WATER_CHANNEL_SAFE- _HORIZONTAL_CLEARANCE |
The minimum safe horizontal distance between adjacent <STRUCTURE>s on either side of a <WATER_CHANNEL>. | REAL | LENGTH | 1569 |
| WATER_CHANNEL_TYPE | The type of a <WATER_CHANNEL>. | ENUMERATION | 1570 | |
| WATER_CURRENT_APPEARANCE_MONTH | The <<MONTH>> of appearance of a <WATER_CURRENT>. | ENUMERATION | 1571 | |
| WATER_CURRENT_DIRECTION | The <<GEODETIC_AZIMUTH>> of the <DIRECTION> of a <WATER_CURRENT>. | REAL | PLANE_ANGLE | 1572 |
|
WATER_CURRENT_DISAPPEARANCE- _MONTH |
The <<MONTH>> of disappearance of a <WATER_CURRENT>, if different from the <<MONTH>> of appearance of the <WATER_CURRENT>. | ENUMERATION | 1573 | |
| WATER_CURRENT_REFERENCE | The reference time of a <WATER_CURRENT> measurement. | ENUMERATION | 1574 | |
| WATER_CURRENT_SPEED | The speed of a <WATER_CURRENT>. | REAL | SPEED | 1575 |
| WATER_CURRENT_TYPE | The type of a <WATER_CURRENT>. | ENUMERATION | 1576 | |
| WATER_DEPTH | The depth of <WATER> from a specified <SURFACE_DATUM> to a <WATER_BODY_FLOOR>, as a positive number. | REAL | LENGTH | 1577 |
| WATER_LEVEL_EFFECT | The effect of surrounding <WATER> on an <OBJECT>; the water level effect. | ENUMERATION | 1578 | |
| WATER_QUALITY | The quality of <WATER> for drinking. | ENUMERATION | 1579 | |
| WATER_TABLE_DEPTH | The mean depth of a zone of saturation in the subsurface <TERRAIN> except where bounded by an impermeable body (for example: <ROCK>) in which no water table exists; the water table depth. | REAL | LENGTH | 1580 |
| WATER_TURBIDITY | A measure of the collective optical properties of a sample of <WATER> that cause light to be scattered and absorbed rather than transmitted in straight <LINE>s. The value is measured using nephelometric methods that depend on passing specific light of a specific <<WAVELENGTH>> through the sample; the water turbidity. | REAL | PURE_NUMBER | 1581 |
| WATER_TYPE | The type of available <WATER>. | ENUMERATION | 1582 | |
| WATER_VAPOUR_PRESSURE | The partial pressure of water vapour in an <ATMOSPHERE>. | REAL | PRESSURE | 1583 |
| WATERCOURSE_CHANNEL_TYPE | The type of trough-like depression that is normally occupied by a <WATERCOURSE>; the watercourse channel type. | ENUMERATION | 1584 | |
| WATERCOURSE_GAP_WIDTH | The predominant <<TERRAIN_GAP_WIDTH>>, measured between the tops of the first accessible breaks in slope above mean water level on each bank of a <WATERCOURSE>. | REAL | LENGTH | 1585 |
| WATERCOURSE_SINK_TYPE | The type of the sink of a <WATERCOURSE>. | ENUMERATION | 1586 | |
| WAVE_SPECTRAL_DENSITY | The power represented by a spectrum of <WATER_WAVE>s at a particular centre <<FREQUENCY>> and centre <DIRECTION>; the wave spectral density. | REAL | POWER | 1587 |
| WAVE_WHITECAP_RATE | The rate of occurrence of <WATER_WAVE>s bearing whitecaps on their crests due to <WIND>. | REAL | PURE_NUMBER | 1588 |
| WAVELENGTH | The distance in a periodic wave between two points of corresponding phase in consecutive cycles; the wavelength. | REAL | LENGTH | 1589 |
| WAYPOINT_TYPE | The type of a <WAYPOINT>. | ENUMERATION | 1590 | |
| WEAPONS_RANGE_TYPE | The type of a <WEAPONS_RANGE>. | ENUMERATION | 1591 | |
| WEATHER_MEASUREMENT_TECHNIQUE | The technique or method of weather measurement. | ENUMERATION | 1592 | |
| WELL_TYPE | The type of a <WELL>. | ENUMERATION | 1593 | |
| WET_BULB_AIR_TEMPERATURE | The <<AIR_TEMPERATURE>> a <REGION> of <AIR> would have if cooled adiabatically at constant <<ATM_PRESSURE>> to the water vapour saturation point by evaporation of <WATER> into it, with all latent heat being supplied by the <REGION>; the wet bulb air temperature. | REAL | THERMO_TEMPERATURE | 1594 |
| WET_GAP_WIDTH | The <<WATERCOURSE_GAP_WIDTH>> at low <TIDE>; the wet gap width. | REAL | LENGTH | 1595 |
| WET_SOIL_TRAFFICABILITY | The <<SOIL_TYPE>> further categorized by its wet weather trafficability characteristics. | ENUMERATION | 1596 | |
| WETLAND_SURFACE_FORM | The type and/or structure of a <WETLAND>; the wetland surface form. | ENUMERATION | 1597 | |
| WIDTH | The length of the shorter of two orthogonal linear axes of an <OBJECT>, measured in the horizontal plane. For a square <OBJECT>, either axis may be measured; for a round <OBJECT>, the diameter is measured. For a <BRIDGE>, the distance perpendicular to the axis between the <BRIDGE_PIER>s is measured. | REAL | LENGTH | 1598 |
| WIND_ABSOLUTE_VORTICITY | The vorticity of <WIND> determined with respect to an absolute coordinate system; the wind absolute vorticity. | REAL | ANGULAR_VELOCITY | 1599 |
| WIND_CALM_RATE_CLIMATOLOGY | The historical (climatology) fraction of calm <<WIND_SPEED>>s (less than 2,575 metres per second (five knots)). | REAL | PURE_NUMBER | 1600 |
| WIND_CHILL_TEMPERATURE_INDEX | A means of quantifying the threat of rapid cooling during breezy or windy conditions that may result in hypothermia. The value is expressed as an equivalent temperature in degrees Celsius given by the formula 13,1267 + (1,1187 · T) - (13,9468 · V0,16) + (0,4863 · T · V0,16) where V is the <<WIND_SPEED>> in metres per second at a <<HEIGHT_AGL>> of 1,5 metres (approximately 5 feet) and T is the <<AIR_TEMPERATURE>> in degrees Celsius; the wind chill temperature index. | REAL | THERMO_TEMPERATURE | 1601 |
|
WIND_CIRCULARITY_COEFFICIENT- _CLIMATOLOGY |
The historical (climatology) quantity of the ratio of the standard deviation of the <<WIND_SPEED_U>> to the standard deviation of the <<WIND_SPEED_V>>, for a defined period of record; the wind circularity coefficient climatology. | REAL | PURE_NUMBER | 1602 |
| WIND_CORRECTION_TECHNIQUE | The type of correction technique that was applied to a rocket sounding measurement of characteristics of the <WIND>. | ENUMERATION | 1603 | |
| WIND_DIRECTION | The <<GEODETIC_AZIMUTH>> of the <DIRECTION> from which the <WIND> is blowing. | REAL | PLANE_ANGLE | 1604 |
| WIND_DIRECTION_CLIMATOLOGY | The mean historical (climatology) <<WIND_DIRECTION>>. | REAL | PLANE_ANGLE | 1605 |
|
WIND_DIRECTION_OCTANT- _CLIMATOLOGY |
The historical (climatology) <<WIND_DIRECTION>> categorized by cardinal vector octant (a 45 arc degree sector centred on a cardinal direction). | ENUMERATION | 1606 | |
| WIND_DIRECTION_OCTANT_FRACTION | A number between 0 and 1 inclusive representing the linearly-scaled fraction of observations reporting <<WIND_DIRECTION>>s within a cardinal vector octant (a 45 arc degree sector centred on a cardinal <DIRECTION>). | REAL | PURE_NUMBER | 1607 |
| WIND_DIRECTION_QUALITY | The quality of a <<WIND_DIRECTION>> measurement. | ENUMERATION | 1608 | |
| WIND_DIRECTION_VARIABILITY | The angular range of the <<WIND_DIRECTION>> during a relatively short reporting period. | REAL | PLANE_ANGLE | 1609 |
| WIND_DIVERGENCE | The horizontal expansion or spreading out of the vector field of the <WIND>; the wind divergence. | REAL | RATE | 1610 |
| WIND_EQUIPMENT_TYPE | The type of measuring <EQUIPMENT> used to measure a <<WIND_DIRECTION>>. | ENUMERATION | 1611 | |
|
WIND_GALE_FORCE_RATE- _CLIMATOLOGY |
The fraction of historical (climatology) gale force <<WIND_SPEED>>s (greater than or equal to 17,49 metres per second (34 knots)). | REAL | PURE_NUMBER | 1612 |
| WIND_GUST_SPEED | The speed of a sudden, brief increase in <<WIND_SPEED>>; the wind gust speed. | REAL | SPEED | 1613 |
| WIND_GUST_SPREAD | The difference between adjacent peaks and lulls in <<WIND_SPEED>>; the wind gust spread. | REAL | SPEED | 1614 |
| WIND_OMEGA | The vertical rate of movement of <AIR> relative to pressure coordinates, where downward is positive; the wind omega. | REAL | PRESSURE_CHANGE_RATE | 1615 |
| WIND_RELATIVE_VORTICITY | The vorticity of <WIND> determined with respect to a system of coordinates fixed relative to a <PLANETARY_SURFACE>; the wind relative vorticity. | REAL | ANGULAR_VELOCITY | 1616 |
| WIND_RESPONSE_FRACTION | A number between 0 and 1 inclusive representing the linearly-scaled fraction of the response to the <<WIND_SPEED>> and/or <<WIND_DIRECTION>> of an <OBJECT>. Zero means no wind response at all and one means maximum response. | REAL | PURE_NUMBER | 1617 |
| WIND_SPECTRAL_CLASS_IDENTIFIER | The numeric identifier of a spectral class for acoustic noise in a <WATER_BODY> that has been induced by <WIND>. | INDEX | 1618 | |
| WIND_SPEED | The ratio of the distance covered by moving <AIR> to the <<TIME_QUANTITY>> taken to cover it; the wind speed. | REAL | SPEED | 1619 |
|
WIND_SPEED_20_PERCENTILE- _CLIMATOLOGY |
The minimum <<WIND_SPEED>> that is greater than 20 percent of the <<WIND_SPEED_CLIMATOLOGY>>s. | REAL | SPEED | 1620 |
|
WIND_SPEED_50_PERCENTILE- _CLIMATOLOGY |
The minimum <<WIND_SPEED>> that is greater than 50 percent of the <<WIND_SPEED_CLIMATOLOGY>>s. | REAL | SPEED | 1621 |
|
WIND_SPEED_80_PERCENTILE- _CLIMATOLOGY |
The minimum <<WIND_SPEED>> that is greater than 80 percent of the <<WIND_SPEED_CLIMATOLOGY>>s. | REAL | SPEED | 1622 |
| WIND_SPEED_CLIMATOLOGY | The mean historical (climatology) <<WIND_SPEED>>. | REAL | SPEED | 1623 |
| WIND_SPEED_CLIMATOLOGY_STD_DEV | The standard deviation of a <SET> of <<WIND_SPEED_CLIMATOLOGY>> measurements. | REAL | SPEED | 1624 |
|
WIND_SPEED_DIRECTION_REPORT- _COUNT |
The number of reports including values for both <<WIND_SPEED>> and <<WIND_DIRECTION>>; the wind speed and direction report count. | COUNT | 1625 | |
| WIND_SPEED_EAST | The <<WIND_SPEED>> in the geodetic east-west direction, where east is positive. | REAL | SPEED | 1626 |
| WIND_SPEED_EAST_CLIM_STD_DEV | The standard deviation of a <SET> of <<WIND_SPEED_EAST_CLIMATOLOGY>> measurements. | REAL | SPEED | 1627 |
| WIND_SPEED_EAST_CLIMATOLOGY | The mean historical (climatology) <<WIND_SPEED_EAST>>. | REAL | SPEED | 1628 |
| WIND_SPEED_EAST_ERROR | The error introduced by uncertainties in a measurement of a <<WIND_SPEED_EAST>>. | REAL | SPEED | 1629 |
| WIND_SPEED_NORTH | The <<WIND_SPEED>> in the geodetic north-south direction, where north is positive. | REAL | SPEED | 1630 |
| WIND_SPEED_NORTH_CLIM_STD_DEV | The standard deviation of a <SET> of <<WIND_SPEED_NORTH_CLIMATOLOGY>> measurements. | REAL | SPEED | 1631 |
| WIND_SPEED_NORTH_CLIMATOLOGY | The mean historical (climatology) <<WIND_SPEED_NORTH>>. | REAL | SPEED | 1632 |
| WIND_SPEED_NORTH_ERROR | The error introduced by uncertainties in a measurement of a <<WIND_SPEED_NORTH>>. | REAL | SPEED | 1633 |
| WIND_SPEED_OCTANT_CLIMATOLOGY | The historical (climatology) <<WIND_SPEED>> categorized by cardinal vector octant (a 45 arc degree sector centred on a cardinal direction). | REAL | SPEED | 1634 |
| WIND_SPEED_OCTANT_FRACTION | A number between 0 and 1 inclusive representing the linearly-scaled fraction of observations reporting <<WIND_SPEED>>s within a cardinal vector octant (a 45 arc degree sector centred on a cardinal <DIRECTION>). | REAL | PURE_NUMBER | 1635 |
| WIND_SPEED_ONLY_COUNT | The number of reports including values for <<WIND_SPEED>> only; the wind speed only count. | COUNT | 1636 | |
| WIND_SPEED_QUALITY | The quality of a <<WIND_SPEED>> measurement. | ENUMERATION | 1637 | |
| WIND_SPEED_U | The component of <<WIND_SPEED>> in the X <DIRECTION> of a projected coordinate system, where +X is positive; the wind speed U. | REAL | SPEED | 1638 |
| WIND_SPEED_V | The component of <<WIND_SPEED>> in the Y <DIRECTION> of a projected coordinate system, where +Y is positive; the wind speed V. | REAL | SPEED | 1639 |
| WIND_SPEED_W | The component of <<WIND_SPEED>> in the Z <DIRECTION> (vertical axis) of the coordinate system of the measurement, where +Z is positive; the wind speed W. | REAL | PRESSURE_CHANGE_RATE | 1640 |
| WIND_TYPE | The type of a <WIND>. | ENUMERATION | 1641 | |
| WIND_VARIABLE_RATE_CLIMATOLOGY | The fraction of historical (climatology) <<WIND_SPEED>>s of 2,575 metres per second (five knots) or greater. | REAL | PURE_NUMBER | 1642 |
| WIND_VECTOR_SPEED_CLIMATOLOGY | The magnitude of the vector defined by the <<WIND_SPEED_EAST_CLIMATOLOGY>> and the <<WIND_SPEED_NORTH_CLIMATOLOGY>>. | REAL | SPEED | 1643 |
| WIND_WAVE_DIRECTION | The <<GEODETIC_AZIMUTH>> of the <DIRECTION> from which <WIND_WAVE>s are arriving. | REAL | PLANE_ANGLE | 1644 |
| WIND_WAVE_HEIGHT | The <<HEIGHT>> measured vertically from the trough to the crest of a <WIND_WAVE>. | REAL | LENGTH | 1645 |
| WIND_WAVE_PERIOD | The mean <<TIME_QUANTITY>> a complete cycle (usually crest to crest or trough to trough) of a <WIND_WAVE> takes to pass a given <LOCATION>. | REAL | TIME | 1646 |
| WINDOW_MATERIAL_TYPE | The type of <MATERIAL> filling the <APERTURE> of a <WINDOW>. | ENUMERATION | 1647 | |
| WINTER_CANOPY_COVER_FRACTION | A number between 0 and 1 inclusive representing the linearly-scaled fractional canopy cover of <TREE>s during the winter within a delineated <REGION> of <LAND>. Zero means no cover and one means completely covered. | REAL | PURE_NUMBER | 1648 |
| WIRE_COUNT | The number of <WIRE>s associated with a <STRUCTURE> (for example: a <POWER_TRANSMISSION_LINE> or a <POWER_TRANSMISSION_LINE_PYLON>); the wire count. | COUNT | 1649 | |
| WIRE_MESH_COVERED | An indication that an <APERTURE> is covered with a mesh of <WIRE>s; wire mesh covered. | BOOLEAN | 1650 | |
| WIRE_STRAND_COUNT | The number of strands comprising a <WIRE_OBSTACLE>; the wire strand count. | COUNT | 1651 | |
| WMO_STATION_IDENTIFIER | The WMO identifier number for a <WEATHER_STATION>; formatted in a Basic Latin string as specified by [WMO9A, "Record Layout of the Station Data File", field 5]. | CONSTRAINED_STRING | 1652 | |
| WOODY_VEGETATION_DENSITY | A number between 0 and 1 inclusive representing the linearly-scaled fraction of <TERRAIN> covered by woody <VEGETATION> within a delineated <REGION> of <LAND>; the woody vegetation density. Zero means no woody <VEGETATION> is present and one means the <REGION> of <LAND> is completely covered. | REAL | PURE_NUMBER | 1653 |
| WORK_IN_PROGRESS_TYPE | The type of work in progress. | ENUMERATION | 1654 | |
| WORSHIP_PLACE_TYPE | The type of a <WORSHIP_PLACE>. | ENUMERATION | 1655 |
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