GCOOS Vocabulary

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Label Definition minRange maxRange UnitOfMeasure Abbreviation
beam2_echo_intensity Measure of the echo intensity returning to beam 2 from the ADCP transmit pulse 0.0 db beam2_echo
beam2_velocity Current velocity measured parallel to the path of beam 2 cm s-1 beam2_vel
beam3_velocity Current velocity measured parallel to the path of beam 3 cm s-1 beam3_vel
beam4_velocity Current velocity measured parallel to the path of beam 4 cm s-1 beam4_vel
bin_u_vector East/West component of bin vector. Eastward is positive. cm s-1 bin_u
bin_velocity Current velocity of bin cm s-1 bin_vel
bin_v_vector North/South component of bin vector. Northward is positive. cm s-1 bin_v
bin_width Width distance between bins meters bin_width
bottom_tracking_depth Distance to sea floor determined by a series of long pulses sent out from ADCP meters btm_track_depth
btm_track_heading Heading in degrees to by a series of long pulses sent out from ADCP degrees btm_track_hdg
initial_bin_distance Distance from instrument to first bin measurement meters init_bin_dist
number_profile_bins Number of uniformely spaced depth cells where data is collected number_bins
air_density Mass of air per unit volume. kg m-3 air density
dew_point_temperature Temperature at which air begins to condense. celsius dew_point
eastward_wind East/West component of wind vector. Eastward wind is positive. m s-1 east_wind
eastward_wind_stress East/West component of wind stress. Eastward is positive. N m-2 tau_x
latent_heat_flux Evaporative exchange of heat from the atmosphere to the ocean. Positive is downward. W m-2 Q_latent
mixing_ratio The ratio of mass of water vapor to the mass of dry air in the sample. g kg-1 mix
net_heat_flux Combined net shortwave, net longwave, sensible and latent heat fluxes. Positive is downward. W m-2 Q_net
net_longwave_radiation Net IR radiation includes reflected IR radiation. Positive is downward. W m-2 Q_lw
northward_wind North/South component of wind vector. Northward wind is positive. m s-1 north_wind
northward_wind_stress North/South component of wind stress. Northward is positive. N m-2 tau_y
precipitation_accumlated_daily Amount of wet equivalent precipitation accumulated for a 24 hour period. mm precip_accum
precipitation_rate Amount of wet equivalent precipitation per unit time. mm hr-1 precip_rate
sensible_heat_flux Conductive or convective exchange of heat from the atmosphere to the ocean. Positive is downward. W m-2 Q_sensible
upward_wind Up/Down component of wind vector. Up is positive. m s-1 z_wind
wet_bulb_temperature Temperature of evaporative cooling. celsius wet_bulb_temp
wind_stress Magnitude of wind stress. Wind stress is the force of wind imposed on a unit area. N m-2 tau
wind_stress_to_direction Direction toward which wind stress is acting. degrees_true tau_dir
conductivity Ability of a material to pass an electrical current. Inverse of resistance. siemens | uS cond
eastward_current East/West component of ocean current. Eastward is positive. cm s-1 water_u
northward_current North/South component of ocean current. Northward is positive. cm s-1 water_v
sea_surface_elevation Height or altitude of the sea surface above specified reference. meter surf_el
signifcant_wave_height Average height of the highest one-third of the waves. meter sig_wv_ht
signifcant_wave_to_direction Significant wave direction. degrees_true sig_wv_dir
significant_wave_period Period of the significant wave. second sig_wv_per
sound_velocity Magnitude of velocity of sound in water. m s-1 sound_velocity
specific_conductance Ability of a specific volume (1 cubic centimeter) of water to pass an electrical current. uS cm-1 sp_cond
swell_height Average height of the highest one-third of the swells, if a separation between swell and wind-wave energy peak exists. meter swell_ht
swell_period Period of the swells. second swell_per
swell_to_direction Direction the swell is coming from. degrees_true swell_dir
vertical_current Upward/Downward component of ocean current. Upward is positive. cm s-1 water_w
water_density Mass of water per unit volume kg m-3 density
water_pressure Amount of pressure caused by overlying water column. Pa | bar | dbar | atm water_press
wave_steepness Measure of departure from typical wave slope. steepness
wind_wave_height Average height of the highest one-third of the wind-waves, if a separation between swell and wind-wave energy peak exists. meter wind_wv_ht
wind_wave_period Period of wind-waves. second wind_wv_per
wind_wave_to_direction Direction the wind-waves are coming from. degrees_true wind_wv_dir
bw_irradiance Irradiance for black body and white light source. W m-2 bw_irrad
bw_radiance Radiance for black body and white light source. W m-2 sr-1 bw_rad
downwelling_irradiance Irradiance from above. W m-2 m-1 Ed
downwelling_longwave_irradiance Integrated downwelling irradiance for spectral wavelengths greater than 700nm. W m-2 pir_irrad
downwelling_radiance Radiance from below. W m-2 m-1 sr-1 Ld
downwelling_shortwave_irradiance Integrated downwelling irradiance for spectral wavelengths less than 700nm. W m-2 psp_irrad
downwelling_uv_irradiance Integrated downwelling irradiance for wavelengths in the ultraviolet region. W m-2 uv_irrad
downwelling_uv_radiance Integrated downwelling radiance for wavelengths in the ultraviolet region. W m-2 sr-1 uv_rad
electromagnetic_wavelength specific frequency of energy within the electromagnetic spectrum. m wavelength
light_attenuation_coefficient Measure of combined effects on light caused by absorption and scattering over a defined distance for a specific wavelength of light. m-1 attenuate
photosynthetically_available_radiation Integrated downwelling irradiance for wavelengths from 400 to 700nm. W m-2 PAR
remote_sensing_spectral_reflectance Upwelling radiance (Lu) divided by downwelling radiance (Ed) at a specific spectral wavelength. sr-1 Rrs
spectral_irradiance Light energy of specific wavelength from all directions at a point and time in space. W m-2 m-1 E
spectral_radiance Light energy of specific wavelength from a set of directions (solid angle) at a point and time in space. W m-2 m-1 sr-1 L
spectral_reflectance Upwelling irradiance (Eu) divided by downwelling radiance (Ed) at a specific spectral wavelength. R
turbidity Measure of light scattering due to suspended material in water. NTU turb
upwelling_irradiance Irradiance from below W m-2 m-1 Eu
upwelling_radiance Radiance from above. W m-2 m-1 sr-1 Lu
visibility Greatest distance an object can be seen and identified. Usually refering to visibility in air but could be other medium. m visibility
water_leaving_radiance Radiance from below, leaving the water surface. W m-2 m-1 sr-1 Luw
voltage Voltage measurement of the battery volts volt
cdom colored (or chromophoric) dissolved organic matter, of riverine origin mg/l or 1/m cdom
chl_concentration concentration of chloropyll-a in a defined volume of water ug L-1 (not kg m-3) chl_conc
nitrate_concentration Measured nitrate concentration in the immediate environment ug L-1 nitrate
oxygen_concentration Concentration in water of dissolved oxygen. ug L-1 oxygen_concen
oxygen_saturation Concentration at which oxygen becomes saturated in water. ug L-1 oxygen_sat
altitude Z-coordinate of observation in vertical distance above reference. Up is positive. meter altitude
bottom Ocean bottom. bottom
gps_elevation Elevation from where the GPS reading was made km gps_elev
height Z-coordinate of observation in vertical distance above reference. Up is positive. meter height
latitude Y-coordinate of dependent observation in geographic coordinate. North is positive. Alternate definition: The angular distance north and south of the equator, with the equator being 0° and the poles 90°. degrees_north lat
latitude_degrees Integer degrees of latitude degrees_north lat_deg
latitude_hemisphere Northern or Southern hemisphere N | S lat_hem
longitude X-coordinate of dependent observation in geographic coordinate. East is positive. Alternate definition: The angular distance east and west of the prime meridian (0° lon.), that runs through Greenwich, England. degrees_east lon
longitude_degrees Integer degrees of longitude degrees_east lon_deg
longitude_hemisphere Eastern or Western hemisphere E | W lon_hem
skin Upper millimeter to centimeter of a surface. meter skin
surface Upper 1-2 meters of an interface between two layers, commonly the sea surface. surface
z Z-coordinate of observation. Zero (z=0) is defined by reference. Up is positive. meter z
averaging_interval Time periood over which several observations are averaged. seconds average_interval
date_time_string Date and time character string of observation that includes year, month, day, hour, minute and second. string YYYY MM DD hh mm ss date_time_string
sample_interval Time period between observations. seconds sample_interval
source_time Time coordinate of observation based on unit of time (seconds, hours, days) since a defined reference time. {sec | hr | day} since YYYY-MM-DD HH:MM:SS.xxx {+/- ZONE} source_time
time Time coordinate of observation based on number of seconds since the defined reference time. sec since 1970-1-1 00:00:00 time
downward_shortwave_radiation Downward solar insolation. Positive is downward. 0.0 1400.0 W m-2 Q_dsw
net_shortwave_radiation Net solar insolation considering albedo effects. Positive is downward. 0.0 1400.0 W m-2 Q_sw
air_pressure Pressure exerted by overlying air. 822.0 1040.0 hPa air_press
downward_longwave_radiation Downward IR radiation. Positive is downward. 250.0 450.0 W m-2 Q_dlw
day_of_year Number of days since day 1 of reference year. 0.0 366.0 days doy
bin_direction Current direction of bin 0.0 360.0 cm s-1 bin_dir
relative_wind_from_direction Direction from which wind is blowing relative to a moving platform, e.g. ship. 0.0 360.0 degrees_true rel_wnddirec
wind_from_direction Direction from which wind is blowing. Meteorological Convention. 0.0 360.0 degrees_true wdir
wind_to_direction Direction toward which wind is blowing. Oceanographic convention. 0.0 360.0 degrees_true wdir
current_speed Magnitude of velocity of ocean current. 0.0 360.0 cm s-1 c_spd
current_to_direction Direction towards which ocean current is going. 0.0 360.0 degrees_true c_dir
beam1_velocity Current velocity measured parallel to the path of beam 1 -300.0 300.0 cm s-1 beam1_vel
beam_velocity Current velocity measured parallel to the path of an Acoustic Doppler Current Profiler beam -300.0 300.0 cm s-1 beam_vel
depth Z-coordinate of observation in vertical distance below reference. Down is positive. 0.0 300.0 meter/decibar depth
wind_gust Maximum instantaneous wind speed (usually no more than but not limited to 10 seconds) within a sample averaging interval. 0.0 250.0 m s-1 wgust
beam1_echo_intensity Measure of the echo intensity returning to beam 1 from the ADCP transmit pulse 0.0 200.0 db beam1_echo
beam3_echo_intensity Measure of the echo intensity returning to beam 3 from the ADCP transmit pulse 0.0 200.0 db beam3_echo
beam4_echo_intensity Measure of the echo intensity returning to beam 4 from the ADCP transmit pulse 0.0 200.0 db beam4_echo
beam_echo_intensity Measure of the echo intensity returning to beam 1 from the ADCP transmit pulse 0.0 200.0 db beam_echo
wind_speed Magnitude of wind velocity. 0.0 150.0 m s-1 wspd
relative_humidity Amount of moisture in the air as vapor relative to how much it can possibly hold at the same temperature. 0.0 105.0 precent rel_humid
cloud_cover Percent of sky covered by clouds of all types. 0.0 100.0 percent cloud cover
relative_wind_speed Magnitude of wind velocity relative to a moving platform, e.g. ship. 0.0 70.0 m s-1 rel_wndspd
latitude_minutes Fraction of latitude degree divided by 60. 0.0 60.0 angular_minute lat_min
latitude_seconds Fraction of lat_min divided by 60. 0.0 60.0 angular_second lat_sec
longitude_minutes Fraction of longitude degree divided by 60. 0.0 60.0 angular_minute lon_min
longitude_seconds+A151 Fraction of lon_min divided by 60. 0.0 60.0 angular_second lon_sec
air_temperature Temperature of air (in situ). 10.0 38.0 celsius air_temp
salinity Measure of salt content of a seawater sample follows UNESCO standards; approximately parts per thousand. 20.0 38.0 PSS or PSU or PPT salinity
water_temperature In situ water temperature 5.0 35.0 celsius wtemp
number_adcp_beams Number of directionally independent beams of the ADCP 2.0 6.0 number_beams
albedo Fraction of downward radiation that is reflected or scattered 0.0 1.0 alb