Concepts
50 concepts
leaf water content
Fresh weight minus dry weight divided by dry weight
precipitation
fractional snow cover area
Proportion of area covered by snow
spectral reflectance
Light absorption and reflection properties of tissues that vary with chemical composition and structure
surface albedo
The fraction of solar radiation reflected by the surface, with snow-covered surfaces having high albedo (0.8) and snow-free surfaces having lower values
correlation coefficient
SWE
atmospheric reanalysis
vertical velocity
Cloud Radiative Forcing
The difference between net radiation flux at the surface under all-sky and clear-sky conditions, accounting for both downwelling and upwelling radiation changes
aerosol particle concentration
particle size distribution
Statistical distribution describing the number concentration of particles as a function of their size
cloud base height
viewing azimuth angle
cloud optical thickness
Measure of cloud opacity to solar radiation, related to cloud droplet concentration and size distribution
cloud phase
Classification of cloud particles as liquid water droplets, ice crystals, or mixed phase
collection efficiency
normalized difference snow index
Spectral band ratio that leverages the fact that snow reflectance is high in visible wavelengths and low in shortwave infrared wavelengths
radar reflectivity (Ze)
AE
attenuated backscatter coefficient
polarimetric radar
Radar systems that transmit and receive both horizontal and vertical polarizations to characterize particle shape, orientation, and microphysical properties
surface pressure
surface roughness length
aerosol composition
eddy covariance
Methodology for measuring turbulent fluxes using high-frequency measurements of vertical wind velocity and scalar concentrations
fSCA
mean Doppler velocity
skew
spectral width
Ångström exponent
BSF
CRF
Monin-Obukhov stability parameter
NDSI
Na
PWV
digital elevation model
Raster representation of terrain elevation used to derive topographic attributes like slope and aspect
fractional sky cover
hygroscopicity parameter
Parameter describing the water uptake ability of aerosol particles using κ-Köhler theory
latitude
linear depolarization ratio
radar beam overlap
Spatial intersection of radar beams from different systems enabling measurement comparison
specific differential phase shift
supersaturation
thermal inertia
CBH
Doppler velocity
Radial velocity of particles measured by Doppler radar
green chromatic coordinate
Measure of vegetation greenness calculated as G/(R+G+B) used as proxy for evapotranspiration
quantitative precipitation estimate
Estimates of precipitation amount derived from radar and other observational data