Register: Observed variable - measurand (terrestrial and hydrological)
stable
URI: http://codes.wmo.int/wmdr/ObservedVariableTerrestrial
Observed variable - measurand (terrestrial and hydrological)
Contents
Name | Notation | Description | Types | Status |
---|---|---|---|---|
Groundwater (amount per unit area) | 165 | Amount of water present beneath the ground surface per unit a... | Concept | stable |
Groundwater level | 166 | Elevation of the water table or piezometric surface of an aqu... | Concept | stable |
Lake area | 167 | Area extent of the surface of a lake. | Concept | stable |
Lake level | 168 | Elevation of water in an inland body of surface water of sign... | Concept | stable |
Stream discharge | 171 | Volume of water flowing through a stream (or channel) cross-s... | Concept | stable |
Stream level | 172 | Elevation of the free water surface of a water body flowing i... | Concept | stable |
Well discharge | 174 | Concept | stable | |
Breaking action-friction coefficient | 231 | Concept | stable | |
Coastlines | 232 | Location of coastlines (Lat/Long) | Concept | stable |
Land cover | 236 | Processed from land surface imagery by assigning identified c... | Concept | stable |
Land surface topography | 237 | Map of land surface heights. | Concept | stable |
Runway conditions | 239 | Concept | stable | |
Wetland extent | 243 | Fraction of an area flood by water. | Concept | stable |
Soil heat Flux | 245 | Concept | stable | |
Soil type | 246 | Result of the classification of different types of soil withi... | Concept | stable |
Fire fractional cover | 386 | Fraction of a land area where fire is occurring. | Concept | stable |
Fire radiative power | 387 | Power radiated by the fire occurring within an area. | Concept | stable |
Fire temperature | 388 | Temperature of the fire occurring within an area. | Concept | stable |
Land surface temperature | 389 | Temperature of the apparent surface of land (bare soil or veg... | Concept | stable |
Lake Surface Temperature | 410 | Temperature of the lake surface. | Concept | stable |
CO2 flux | 422 | Flux of carbon dioxide from the surface to the atmosphere | Concept | stable |
Biomass | 423 | Total amount of vegetation in a reference area | Concept | stable |
Fraction of vegetated land | 424 | Fraction of a land area where vegetation is present. | Concept | stable |
Leaf Area Index (LAI) | 425 | LAI (Leaf Area Index, LAI) is the total one-sided area of pho... | Concept | stable |
Normalised Difference Vegetation Index (NDVI) | 426 | Difference between maximum (in NIR) and minimum (around the R... | Concept | stable |
Vegetation type | 427 | Result of the classification of different types of vegetation... | Concept | stable |
Evaporation | 510 | Quantity of water evaporated from the soil and plants when th... | Concept | stable |
Soil moisture (in the roots region) | 527 | Fractional content of water in a volume of wet soil. Typicall... | Concept | stable |
Soil moisture at surface | 528 | Fractional content of water in a volume of wet soil. Surface ... | Concept | stable |
Fraction of Absorbed PAR (FAPAR) | 563 | Fraction of PAR absorbed by vegetation (land or marine) for p... | Concept | stable |
Photosynthetically Active Radiation (PAR) | 564 | Flux of downwelling photons of wavelength 400-700 nm. | Concept | stable |
Soil temperature | 596 | The standard depths for soil temperature measurements are 5, ... | Concept | stable |
Glacier motion | 611 | Velocity of the ice measured at the surface of a glacier. | Concept | stable |
Glacier topography | 612 | Map of the height of the glacier surface. | Concept | stable |
Ice sheet topography | 613 | Map of ice sheet height over land. | Concept | stable |
Depth of snowfall | 627 | The vertical depth of freshly fallen snow that has accumulate... | Concept | stable |
Snow cover extent | 628 | The area of snow-covered ground, ice, or firn based on the fr... | Concept | stable |
Snow depth | 629 | Vertical distance from the snow surface to a stated reference... | Concept | stable |
Snow surface state | 630 | Binary product (dry or wet) expressing the presence of liquid... | Concept | stable |
Water equivalent of snow cover | 631 | The Vertical depth of the water that would be obtained if the... | Concept | stable |
Ice thickness | 725 | Concept | stable | |
Ice thickness | 726 | Concept | stable | |
Presence of snow | 12007 | A binary observation of the presence of snow cover at the mea... | Concept | stable |
Water equivalent of snowfall | 12008 | Vertical depth of the water that would be obtained if the fre... | Concept | stable |
Glacier mass balance at a point | 12009 | The result of all processes adding and removing mass from the... | Concept | stable |
Glacier-wide mass balance | 12010 | The result of all processes adding and removing mass from the... | Concept | stable |
Surface accumulation at a point | 12011 | The mass added to the glacier at a point on its surface expre... | Concept | stable |
Surface ablation at a point | 12012 | The mass removed from the glacier at a point on its surface e... | Concept | stable |
Glacier area | 12013 | Area enclosed by the projection of the glacier outline onto t... | Concept | stable |
Permafrost temperature | 12014 | Ground temperature measured in the permafrost. | Concept | stable |
Active layer thickness | 12015 | Thickness of the surface layer of the ground that is subject ... | Concept | stable |
Rock glacier velocity | 12016 | Surface velocity of a single rock glacier unit. | Concept | stable |
Stream velocity | 12247 | Ratio of the distance covered by a body of water, moving in a... | Concept | stable |
Stream mean velocity | 12248 | Velocity at a given cross-section of a stream, obtained by di... | Concept | stable |
Stream surface velocity | 12249 | Velocity of a stream at its surface at a given point. [Based ... | Concept | stable |
Water surface slope | 12251 | Difference in the stage of water surface over a short stream ... | Concept | stable |
Water level | 12252 | Elevation of the free water surface of a water body relative ... | Concept | stable |
Percolation rate | 12253 | Flow of a liquid through an unsaturated porous medium, such a... | Concept | stable |
Recharge rate | 12254 | Natural or artificial introduction of water into the saturate... | Concept | stable |
Aquifer volume | 12255 | Volume of geological formation capable of storing, transmitti... | Concept | stable |
Hydraulic conductivity | 12256 | Property of a porous medium or fractured rock which, accordin... | Concept | stable |
Hydraulic transmissivity | 12257 | Rate at which water is transferred through a unit width of an... | Concept | stable |
Porosity | 12258 | Ratio of the volume of the interstices in a given sample of a... | Concept | stable |
Effective porosity | 12259 | Volume of the void spaces through which water or other fluids... | Concept | stable |
Specific retention | 12260 | Amount of water held in the soil after gravitational water ha... | Concept | stable |
Infiltration rate | 12261 | Flow of water through the soil surface into a porous medium f... | Concept | stable |
Infiltration capacity | 12262 | Maximum rate at which water can penetrate the soil matrix per... | Concept | stable |
Specific capacity (well) | 12263 | Ratio of discharge of a well to drawdown at equilibrium. [Int... | Concept | stable |
Specific yield | 12264 | Ratio of the volume of water which can be drained by gravity ... | Concept | stable |
Groundwater flow | 12265 | Volume of groundwater flowing through an aquifer per unit tim... | Concept | stable |
Storage | 12266 | (1) Impounding of water in surface or underground reservoirs ... | Concept | stable |
Total dissolved solids | 12267 | The concentration of all dissolved substances in water, usual... | Concept | stable |
Suspended sediment | 12268 | The component of an unacidified water sample that is retained... | Concept | stable |
Sediment discharge | 12270 | Rate of movement of sediments in a stream at a given cross-se... | Concept | stable |
Bed load discharge | 12271 | Amount (weight, mass or volume) of sediment that moves on or ... | Concept | stable |
Suspended sediment load | 12272 | That part of the total transported sediment which is suspende... | Concept | stable |
Total sediment load | 12273 | Total quantity of sediment passing through a reach, both in s... | Concept | stable |
Runoff | 12274 | That part of the precipitation which flows towards a river on... | Concept | stable |
Runoff coefficient | 12275 | Ratio of runoff depth to precipitation depth. [International ... | Concept | stable |
Depth of runoff | 12276 | Runoff volume from a drainage basin, divided by its area, in ... | Concept | stable |
Soil moisture | 12277 | Percentage of water in soil expressed relative to dry-soil we... | Concept | stable |
Live storage | 12278 | Volume of water in a reservoir between the minimum and maximu... | Concept | stable |
Reservoir storage | 12279 | Volume of a reservoir including dead storage. Synonym: total ... | Concept | stable |
Lake volume | 12280 | Volume of water contained in a lake at a given water level. [... | Concept | stable |