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[null,"3rd proposal for new UCD words 2023 March 10","Colonne1","Colonne2","in green : existing in UCD1.4 in red new proposal"]
[null,"Observatory ambient parameters.  Observation and Scientific parameters"]
[null,"Column Name","Description","Proposed new UCD (Andrea) July 22","2nd proposal for new UCD words sept 15 2022+update march 2023"]
[null,"--- DIMM seeing"]
[1,"DIMM-Seeing","The total seeing calculated with DIMM telescope [arcsec].",null,"instr.obsty.seeing"]
[2,"Relative Flux RMS","Relative Flux variations measured along the line of sight normalized by the average flux.","stat.rms;phot.flux;arith.ratio","stat.rms;phot.flux;arith.ratio"]
[2,"Relative Flux RMS base time","Time range of measurements (start of first interval to end of last interval) used to calculate the relative flux variations measured along the line of sight [s].",null,"time.interval"]
[null,"--- Historical Ambient Data"]
[4,"DIMM-Airmass","Airmass at which the ASM-DIMM telescope measures the site seeing.",null,"obs.airMass"]
[5,"DIMM-Seeing","Reference observatory site seeing measured by the ASM-DIMM telescope, Full Width Half Maximum at 500nm [arcsec].",null,"instr.obsty.seeing"]
[6,"Relative flux RMS","Relative Flux variations measured along the line of sight normalized by the average flux.","stat.rms;phot.flux;arith.ratio","stat.rms;phot.flux;arith.ratio"]
[7,"TAU","Coherence time [s].","time.interval","time.interval;obs.coherence"]
[8,"THETA0","Isoplanatic angle [arcsec].","instr.offset.isoplanatic ?? obs.atmos.isoplanatic","obs.atmos.isoplanatic/ pos.angDistance;obs.atmos.turbulence"]
[null,"--- LHATPRO"]
[9,"Platform","indicates the position where a radiometer is located",null,"meta.code"]
[10,"LHATPRO ID","An integer used to identify a specific radiometer,",null,"meta.id"]
[11,"Telescope azimuth and elevation","Telescope azimuth and elevation [deg]",null,"pos.az;instr.tel"]
[12,"Target RA/DEC","Right ascension and Declination of the target [deg].",null,"pos.eq;src"]
[13,"IR temperature at Zenith","Measured infrared (10.5 μm) sky brightness temperature at Zenith [Celsius]","phys.temperature.brightness;em.IR","instr.skyTemp;em.IR"]
[14,"IR temperature","Measured infrared (10.5 μm) sky .","phys.temperature.brightness;em.IR","instr.skyTemp;em.IR"]
[15,"Liquid water path","Measured liquid water path at Zenith [g/m**2].","phys.atmos.water.path","phys.columnDensity;obs.atmos.water"]
[16,"Precipitable Water Vapour","Measured Precipitable Water Vapor (using the 183 GHz emission line) at zenith [mm].","phys.atmos.water.precipit  ou phys.water.precipit;obs.param ou phys.water.precipit;obs.calib","phys.size;obs.atmos.water"]
[17,"Absolute Humidity","Absolute Humidity Value [g/m**3] measured by a humidity profiler (183-191 GHz) at different heights","phys.humidity.abs;obs.param ou phys.water.precipit;obs.calib","obs.atmos.humidity"]
[18,"Relative Humidity","Relative Humidity Value [%] at at different heights","phys.humidity.rel;obs.param","obs.atmos.humidity;arith.ratio"]
[19,"Temperature Profile","Brightness Temperature [K] measured by a temperature profiler (51-58 GHz) at different heights","phys.temperature.brightness;em.mm","instr.skyTemp;em.mm"]
[null,"--- MASS"]
[20,"Free Atmosphere Seeing","Free atmosphere seeing at 500nm/zenith from MASS stand-alone integrated profile [arcsec]",null,"instr.obsty.seeing"]
[21,"Free Atmosphere Seeing RMS","Relative RMS of free atmosphere seeing at 500nm/zenith from MASS stand-alone integrated profile.",null,"stat.rms;instr.obsty.seeing"]
[22,"MASS Tau0","Coherence time (weights method) from MASS stand-alone [s].",null,"time.interval;obs.coherence"]
[23,"MASS Tau0 RMS","Relative RMS on the coherence time (weights method) from MASS stand-alone.",null,"stat.rms;time.interval;obs.coherence"]
[24,"MASS Theta0","Isoplanatic angle from MASS-DIMM integrated profile [J1:J6] [arcsec].","phys.turbulence.isoplanatic;obs.atmos","obs.atmos.isoplanatic. / pos.angDistance;obs.atmos.turbulence"]
[25,"MASS Theta0 RMS","Relative RMS on the isoplanatic angle from MASS-DIMM integrated profile [J1:J6].","stat.rms;phys.turbulence.isoplanatic","stat.rms;obs.atmos.isoplanatic"]
[26,"MASS Turb Altitude","Characteristic altitude of the free atmosphere turbulence from MASS-DIMM integrated profile [J1:J6] [m].","phys.turbulence.altitude","pos.earth.altitude;obs.atmos.turbulence"]
[27,"MASS Turb Altitude RMS","Relative RMS on the characteristic altitude of the turbulence in MASS-DIMM integrated profile [J1:J6].","stat.rms;phys.turbulence.altitude","stat.rms;pos.earth.altitude;obs.atmos.turbulence"]
[28,"MASS-DIMM Cn2 fraction at ground","Fraction of turbulence in the ground layer (GL defined as J0, or DIMM minus MASS): FracGL = J0/sum(J0:J6).","phys.turbulence;arith.ratio","obs.atmos.turbulence.cn2;arith.ratio"]
[29,"MASS-DIMM Seeing","Whole atmosphere seeing at 500nm/zenith from MASS-DIMM combined profile [J0:J6] [arcsec].",null,"instr.obsty.seeing"]
[30,"MASS-DIMM Tau0","Coherence time of the turbulence in the whole atmosphere from MASS-DIMM combined profile [J0:J6] [s].",null,"time.interval;obs.coherence/ time.interval;phys.coherence;obs.atmos "]
[31,"MASS-DIMM Theta0","Isoplanatic angle of the turbulence in the whole atmosphere [arcsec].","phys.turbulence.isoplanatic","obs.atmos.turbulence.isoplanatic/ pos.angDistance;obs.atmos.turbulence"]
[32,"MASS-DIMM Turb Altitude","Characteristic altitude of the turbulence in the whole atmosphere from MASS-DIMM combined profile [m].","phys.turbulence.altitude","pos.earth.altitude;obs.atmos.turbulence"]
[33,"MASS-DIMM Turb Velocity","Characteristic velocity of the turbulence in the whole atmosphere from MASS-DIMM combined profile [m/s].","phys.turbulence.velocity","phys.veloc;obs.atmos.turbulence"]
[null,"--- METEO"]
[34,"Air Pressure","Temporal (1 minute) mean of observatory site ambient barometric air pressure measured at ground during measurement period [hPa].",null,"phys.pressure;obs.atmos"]
[35,"Ambient Temperature","Temporal (1 minute) mean of site ambient temperature measured at 30m, 2m, ground and 20m below VLT platform [deg Celsius].",null,"phys.temperature;obs.atmos"]
[36,"Dew Temperature","Temporal (1 minute) mean of observatory site ambient dew temperature measured at sensor position 30m, 2m, and 20m below VLT platform during measurement period [deg Celsius].","phys.temperature.dew","phys.temperature.dew;obs.atmos "]
[37,"Large (5 micron) dust Particles","Temporal (20 minutes) mean of observatory site ambient large (5 micron size) dust particle count per cubic meter measured at sensor position 20 m and 10 during measurement period [m**(-3)].",null,"phys.density;phys.dust;obs.atmos"]
[38,"Normalised Air Pressure","1 minute average pressure normalised to sea level [hPa].",null,"phys.pressure;obs.atmos"]
[39,"Rain intensity","1 minute average rain percentage measured at 20m below VLT platform [%].","phys.atmos.rain","obs.atmos.rain"]
[40,"Relative Humidity","Temporal (1 minute) mean of observatory site ambient relative humidity measured at sensor position 30m, 2m and 20m below VLT platform during measurement period [%].","phys.humidity.rel","obs.atmos.humidity;arith.ratio"]
[41,"Small (0.5 micron) dust Particles","Temporal (20 minutes) mean of observatory site small (0.5 micron size) dust particule count per cube meter measured at sensor position 20m and 10m during measurement period [m**(-3)].",null,"phys.density;phys.dust;stat.mean"]
[42,"Wind Direction (0/360)","1 minute average wind direction at 30m and 10m above ground counted clockwise from North (standard) [deg].","phys.wind.direction","pos.azimuth;obs.atmos.wind"]
[43,"Wind Direction (180/-180)","1 minute average wind direction at 30m and 10m above ground counted clockwise from North (with 180 degree negative offset for display purposes) [deg].","phys.wind.direction","pos.posAngle;obs.atmos.wind"]
[44,"Wind Speed","1 minute average wind speed at sensor position 30m and 10m [m/s].","phys.wind.speed","phys.veloc;obs.atmos.wind"]
[45,"Wind Speed component U","Temporal (1 minute) mean of observatory site ambient wind speed U vector component, where U is horizontal and points to 330 degree measured at sensor position 20m during measurement period [m/s].","phys.wind.speed.U","phys.veloc;pos.cartesian.x;obs.atmos.wind"]
[46,"Wind Speed component V","Temporal (1 minute) mean of observatory site ambient wind speed V vector component, where V is horizontal and points to 240 degree measured at sensor position 20m during measurement period [m/s].","phys.wind.speed.V","phys.veloc;pos.cartesian.y;obs.atmos.wind"]
[47,"Wind Speed component W","Temporal (1 minute) mean of observatory site ambient wind speed W vector component, where W is vertically pointing upwards, measured at sensor position 20m during measurement period [m/s].","phys.wind.speed.W","phys.veloc;pos.cartesian.z;obs.atmos.wind"]
[null,"--- SLODAR"]
[48,"Cn2 above UTs","Integrated Cn2 above the equivalent UT (VLT Unit Telescope) height [10**(-15)m**(1/3)].   Explained in wavefront slope correlations https://arxiv.org/pdf/1101.3924.pdf","phys.turbulence","obs.atmos.turbulence.cn2;arith.sum"]
[49,"Cn2 fractions","Cn2 fraction below 300m and 500m respectively.","phys.turbulence;arith.ratio","obs.atmos.turbulence.cn2;arith.ratio ??"]
[50,"Surface layer profile","High resolution surface layer fit strength [10**(-15)m**(1/3)].",null,"stat.fit;obs.atmos.turbulence.cn2"]