| 24 |
Human observation
|
|
stable
|
| 58 |
(Optical) filter Instrument
|
|
stable
|
| 59 |
(Ruler for) rain gauge
|
|
stable
|
| 60 |
(Ultra)sonic anemometer
|
|
stable
|
| 62 |
Adsorption - scintillation counting
|
|
stable
|
| 63 |
Aerovane (wind vane with propeller)
|
|
stable
|
| 64 |
Alpha counting
|
|
stable
|
| 65 |
Anemometer [general]
|
|
stable
|
| 66 |
Aneroid barometer (evacuated capsule)
|
|
stable
|
| 67 |
Anion exchange membrane (AEM)
|
|
stable
|
| 68 |
Atmometer
|
|
stable
|
| 69 |
Atmospherics ('sferics') detection
|
|
stable
|
| 70 |
Atomic absorption spectrophotometry (AAS)
|
|
stable
|
| 71 |
Atomic emission spectrophotometry (AES)
|
|
stable
|
| 72 |
BSRN compliant instrument
|
|
stable
|
| 73 |
Barometer, mercury column
|
|
stable
|
| 74 |
Barometer, mercury-free column
|
|
stable
|
| 75 |
Beta counting
|
|
stable
|
| 76 |
Bimetal thermometer
|
|
stable
|
| 77 |
Bowen-ratio method
|
|
stable
|
| 78 |
Brewer
|
|
stable
|
| 79 |
Brewer-GDR
|
|
stable
|
| 80 |
Brewer-Mast Sonde
|
|
stable
|
| 82 |
Capacitive rain sensor
|
|
stable
|
| 83 |
Capillary electrophoresis (CE)
|
|
stable
|
| 84 |
Carbon-Iodine Sonde (KC Sonde)
|
|
stable
|
| 87 |
Colorimetric titration (Gran method)
|
|
stable
|
| 88 |
Colorimetric titration [general]
|
|
stable
|
| 90 |
Colorimetry (Saltzman)
|
|
stable
|
| 91 |
Colorimetry (thorin)
|
|
stable
|
| 94 |
Conductometry
|
|
stable
|
| 95 |
Cup anemometer
|
|
stable
|
| 96 |
Cup anemometer (3 or 4 cups)
|
|
stable
|
| 97 |
Cuvette
|
|
stable
|
| 98 |
Denuder
|
|
stable
|
| 99 |
Denuder
|
|
stable
|
| 102 |
Disdrometer (drop spectrographs)
|
|
stable
|
| 103 |
Disjunct eddy covariance method
|
|
stable
|
| 105 |
Dissipation method
|
|
stable
|
| 106 |
Dobson
|
|
stable
|
| 107 |
ECC Sonde
|
|
stable
|
| 108 |
Eddy accumulation method
|
|
stable
|
| 109 |
Eddy covariance method
|
|
stable
|
| 110 |
Electric conductivity (EC meter)
|
|
stable
|
| 111 |
Electronic pressure transducer (silicon diaphragm)
|
|
stable
|
| 112 |
Estimation from visual observation
|
|
stable
|
| 113 |
Evaporation pan and-or tank
|
|
stable
|
| 114 |
Faraday cup photochemistry
|
|
stable
|
| 115 |
Filter sampling + alpha counting
|
|
stable
|
| 116 |
Filter sampling + gamma spectrometry
|
|
stable
|
| 119 |
Flame-ionization detector (FID)
|
|
stable
|
| 120 |
Flask sampling (analytical method unspecified)
|
|
stable
|
| 121 |
Flow injection analyzer (FIA)
|
|
stable
|
| 123 |
Flux variance method
|
|
stable
|
| 125 |
Gradient method
|
|
stable
|
| 127 |
Gravimetry [general]
|
|
stable
|
| 129 |
High Performance Liquid Chromatography (HPLC)
|
|
stable
|
| 130 |
Hot wire anemometer
|
|
stable
|
| 132 |
Hypsometer (water boiling point)
|
|
stable
|
| 133 |
ICP-AES
|
|
stable
|
| 134 |
ICP-MS
|
|
stable
|
| 135 |
Indian Sonde
|
|
stable
|
| 136 |
Interferential method
|
|
stable
|
| 137 |
Ion Chromatography (IC) [general]
|
|
stable
|
| 142 |
Doppler wind lidar
|
Light detection and ranging (lidar) with Doppler capability (...
|
stable
|
| 143 |
Raman lidar
|
Light detection and ranging (lidar) with Raman capability, ty...
|
stable
|
| 144 |
Liquid-in-glass thermometer (mercury-free)
|
|
stable
|
| 146 |
Lysimeter
|
|
stable
|
| 147 |
Mass balance method
|
|
stable
|
| 149 |
Mercury-in-glass thermometer
|
|
stable
|
| 150 |
Microbarometer (dewar)
|
|
stable
|
| 151 |
Microtops
|
|
stable
|
| 152 |
Microtops
|
|
stable
|
| 153 |
Microtops
|
|
stable
|
| 154 |
Microwave profiler
|
|
stable
|
| 155 |
Microwave radiometry
|
|
stable
|
| 156 |
Microwave radiometry
|
|
stable
|
| 157 |
NILU_O_2
|
|
stable
|
| 158 |
NILU_O_3
|
|
stable
|
| 166 |
Ozone sonde (unspecified)
|
|
stable
|
| 167 |
Passive Samplers [general]
|
|
stable
|
| 168 |
Photoacoustic detection
|
|
stable
|
| 170 |
Pluviograph
|
|
stable
|
| 171 |
Potassium iodide (KI) method
|
|
stable
|
| 172 |
Potentiometry (ion-selective electrode)
|
|
stable
|
| 173 |
Potentiometry (pH meter)
|
|
stable
|
| 174 |
Pressure balance (piston)
|
|
stable
|
| 175 |
Pressure plate (solid blade)
|
|
stable
|
| 176 |
Pressure tube
|
|
stable
|
| 177 |
Propeller anemometer
|
|
stable
|
| 179 |
Pyranometer (measurement of IR radiation)
|
|
stable
|
| 180 |
Pyrradiometer (total global, UV+IR)
|
|
stable
|
| 181 |
Radio acoustic sounding system (RASS)
|
|
stable
|
| 182 |
Radio acoustic sounding system (RASS)
|
|
stable
|
| 183 |
Radio detection and ranging (Radar)
|
|
stable
|
| 184 |
Radio detection and ranging (Radar) profiler
|
|
stable
|
| 185 |
Radiochemical Methods [general]
|
|
stable
|
| 186 |
Regener Sonde (chemiluminescence)
|
|
stable
|
| 188 |
Resistance thermometer, thermistor
|
|
stable
|
| 189 |
SAOZ (UV-vis diode array spectrometer)
|
|
stable
|
| 190 |
Scatterometer
|
|
stable
|
| 191 |
Separation + manometric determination
|
|
stable
|
| 195 |
Sonic thermometer
|
|
stable
|
| 196 |
Sound detection and ranging (Sodar) profiler
|
|
stable
|
| 197 |
Sunphotometry-Filter Radiometry
|
|
stable
|
| 199 |
Surface chamber
|
|
stable
|
| 201 |
Thermocouple, thermopile
|
|
stable
|
| 204 |
Tipping bucket rain gauge (totalizer)
|
|
stable
|
| 205 |
Titration
|
|
stable
|
| 207 |
Transmissometer
|
|
stable
|
| 208 |
Transport modeling (model unspecified)
|
|
stable
|
| 209 |
Turbidity measurement
|
|
stable
|
| 210 |
Umkehr method
|
|
stable
|
| 211 |
Volumetric measurement
|
|
stable
|
| 212 |
Weighing type rain gauge (totalizer)
|
|
stable
|
| 213 |
Wet Chemical Methods [general]
|
|
stable
|
| 214 |
Wind sock (textile tube)
|
|
stable
|
| 215 |
Wind vane (solid blade)
|
|
stable
|
| 217 |
Aerodyne mass spectrometer (AMS)
|
|
stable
|
| 218 |
EUSAAR protocol
|
|
stable
|
| 219 |
Filter + beta attenuation (betameter, beta gauge)
|
|
stable
|
| 220 |
Filter + light attenuation (aethalometer)
|
|
stable
|
| 221 |
Mass Spectrometry (MS) [general]
|
|
stable
|
| 222 |
Monitor for AeRosols and GAses (MARGA)
|
|
stable
|
| 223 |
Particle induced x-ray emission (PIXE)
|
|
stable
|
| 224 |
Particle soot absorption photometry (PSAP)
|
|
stable
|
| 225 |
Thermo-optical analyzer (Sunset Labs)
|
|
stable
|
| 226 |
X-ray fluorescence (XRF)
|
|
stable
|
| 227 |
Aerodynamic particle sizing spectrometer (APS)
|
|
stable
|
| 228 |
Aerosol backscatter sonde
|
|
stable
|
| 229 |
Light scattering
|
|
stable
|
| 230 |
Nephelometry, integrating
|
|
stable
|
| 231 |
Cloud condensation nuclei (CCN) counter
|
|
stable
|
| 232 |
Condensation particle counter (CPC)
|
|
stable
|
| 233 |
Continuous gravimetry
|
|
stable
|
| 234 |
Differential mobility particle sizer (DMA, DMPS)
|
|
stable
|
| 235 |
Diffusion battery
|
|
stable
|
| 236 |
Electric mobility [general]
|
|
stable
|
| 237 |
Electrostatic classifier
|
|
stable
|
| 238 |
Multiangle absorption photometry (MAAP)
|
|
stable
|
| 239 |
Multistage impactor
|
|
stable
|
| 240 |
Optical particle counter (OPC)
|
|
stable
|
| 241 |
Scanning mobility particle sizer (SMPS)
|
|
stable
|
| 242 |
Twomey static thermal diffusion chamber
|
|
stable
|
| 244 |
Sun-tracking photometry
|
|
stable
|
| 245 |
Ceilometer
|
|
stable
|
| 246 |
Flexpart (dispersion modeling)
|
|
stable
|
| 247 |
Flextra (trajectory modeling)
|
|
stable
|
| 248 |
Hysplit (trajectory modeling)
|
|
stable
|
| 249 |
Lagranto (trajectory modeling)
|
|
stable
|
| 250 |
Thin film capacitance
|
|
stable
|
| 251 |
Chilled mirror
|
|
stable
|
| 252 |
Lithium chloride (LiCl)
|
|
stable
|
| 253 |
Hair hygrometer-hygrograph
|
|
stable
|
| 254 |
Hygrometer [general]
|
|
stable
|
| 255 |
IR absorption hygrometer
|
|
stable
|
| 256 |
Optical hygrometer
|
|
stable
|
| 257 |
UV fluorescence-based hygrometer (Lyman-α)
|
Detection of UV fluorescence signal emitted by the excited OH...
|
stable
|
| 258 |
Electrical aspiration (Frankenberger type)
|
|
stable
|
| 259 |
Mechanical aspiration
|
|
stable
|
| 263 |
Bimetallic actinograph
|
|
stable
|
| 264 |
Pyrheliometer (direct solar, broadband)
|
|
stable
|
| 265 |
Pyrgeometer (global, infrared)
|
|
stable
|
| 266 |
Pyranometer (global solar, broadband)
|
|
stable
|
| 267 |
Spectral pyranometer
|
|
stable
|
| 268 |
UV-vis spectrometry-radiometry
|
|
stable
|
| 270 |
Tetrachloromercurate (TCM) absorption - CL
|
|
stable
|
| 271 |
Colorimetry (ANSA)
|
|
stable
|
| 272 |
Colorimetry (Griess)
|
|
stable
|
| 273 |
Colorimetry (indophenol, Bertholet)
|
|
stable
|
| 274 |
Colorimetry (mercury thiocyanate+iron alum)
|
|
stable
|
| 275 |
Colorimetry (NEDA)
|
|
stable
|
| 276 |
Colorimetry (Nessler, K2HgI4)
|
|
stable
|
| 277 |
Colorimetry (sodium salicylate method for nitrate)
|
|
stable
|
| 278 |
Colorimetry [general]
|
|
stable
|
| 279 |
Filter sampling (analytical method unspecified)
|
|
stable
|
| 280 |
Adsorption tube (charcoal) + elution + GC
|
|
stable
|
| 281 |
Filter sampling + combustion + IC
|
|
stable
|
| 282 |
Filter sampling + combustion + other
|
|
stable
|
| 283 |
Filter sampling + extraction + IC
|
|
stable
|
| 284 |
Filter sampling + extraction + other
|
|
stable
|
| 285 |
Filter sampling + gravimetry
|
|
stable
|
| 286 |
Impregnated filter
|
|
stable
|
| 287 |
Catalytic conversion 'Au' - CL
|
|
stable
|
| 288 |
Catalytic conversion 'Fe' - CL
|
|
stable
|
| 289 |
Catalytic conversion 'Mb' - CL
|
|
stable
|
| 290 |
Chemiluminescence (CL) [general]
|
|
stable
|
| 291 |
Photolytic conversion - CL
|
|
stable
|
| 292 |
Monitor for AeRosols and GAses (MARGA) Metrohm
|
|
stable
|
| 293 |
Filter sampling + photo multiplier tube (PMT)
|
|
stable
|
| 294 |
Fluorescence [general]
|
|
stable
|
| 295 |
UV fluorescence
|
|
stable
|
| 296 |
Vacuum UV fluorescence
|
|
stable
|
| 297 |
Gas Chromatography (GC) [general]
|
|
stable
|
| 298 |
GC-ECD
|
|
stable
|
| 299 |
GC-ECD-FID
|
|
stable
|
| 300 |
GC-ECD-MS
|
|
stable
|
| 301 |
GC-FID
|
|
stable
|
| 302 |
GC-HgO reduction-UV absorption
|
|
stable
|
| 303 |
GC-MS
|
|
stable
|
| 304 |
H2O2 conversion - IC
|
|
stable
|
| 305 |
Cavity ring-down spectroscopy (CRDS)
|
|
stable
|
| 306 |
Cavity-enhanced absorption spectroscopy (CEAS)
|
|
stable
|
| 307 |
Integrated cavity output spectroscopy (ICOS)
|
|
stable
|
| 308 |
Laser induced fluorescence (LIF)
|
|
stable
|
| 309 |
Laser photoacoustic spectroscopy (LPAS)
|
|
stable
|
| 310 |
Laser spectroscopy [general]
|
|
stable
|
| 311 |
Quantum cascade laser (QCL) spectroscopy
|
|
stable
|
| 312 |
Chemical ionization MS (CIMS) with matrix isolation
|
|
stable
|
| 313 |
Proton transfer reaction mass spectrometry (PTR-MS)
|
|
stable
|
| 314 |
IR spectrometry-radiometry [general]
|
|
stable
|
| 315 |
Light absorption photometry
|
|
stable
|
| 316 |
Long path absorption photometry (LOPAP)
|
|
stable
|
| 317 |
Non-dispersive IR (NDIR) absorption
|
|
stable
|
| 318 |
Non-dispersive UV (NDUV)
|
|
stable
|
| 319 |
UV absorption spectrometry-radiometry
|
|
stable
|
| 320 |
Integrated path differential absorption (IPDA) lidar
|
Light detection and ranging (lidar) with integrated path diff...
|
stable
|
| 321 |
Differential optical absorption (DOAS)
|
|
stable
|
| 322 |
Fourier-transform IR spectroscopy (FTIR)
|
|
stable
|
| 323 |
TCCON Fourier-transform IR spectroscopy (TCCON-FTIR)
|
|
stable
|
| 327 |
Radiosonde with NAVAID
|
|
stable
|
| 328 |
Radiosonde with radar tracking
|
|
stable
|
| 329 |
Radiosonde with radiotheodolite tracking
|
|
stable
|
| 330 |
Radiosonde with composite method tracking
|
|
stable
|
| 331 |
Radiosonde (tracking unspecified)
|
|
stable
|
| 332 |
Pilot balloon with optical tracking)
|
|
stable
|
| 335 |
Differential absorption lidar (DIAL)
|
Light detection and ranging (lidar) with differential absorpt...
|
stable
|
| 336 |
Microwave radiometry
|
|
stable
|
| 338 |
Tunable diode lase spectroscopy (TDLS)
|
Tunable diode lase spectroscopy (TDLS)
|
stable
|
| 339 |
UV spectroradiometry
|
|
stable
|
| 340 |
Wet-bulb thermometer
|
A thermometer having a bulb that is kept moistened when humid...
|
stable
|
| 341 |
Backscatter lidar
|
Elastic backscatter light detection and ranging (lidar) typic...
|
stable
|
| 342 |
High spectral resolution (HSR) lidar
|
Light detection and ranging (lidar) with high spectral resolu...
|
stable
|
| 343 |
Polarized lidar
|
Light detection and ranging (lidar) capable of determining th...
|
stable
|
| 344 |
GC-CVAFS
|
Gas chromatography and detection by cold vapour atomic fluore...
|
stable
|
| 345 |
GC-TCD
|
Gas chromatography and detection by a thermal conductivity de...
|
stable
|
| 346 |
Electrostatic collection + alpha counting
|
Alpha counting after electrostatic collection of measurand.
|
stable
|
| 347 |
Tunable Infrared Laser Differential Absorption Spectroscopy (TILDAS)
|
Tunable Infrared Laser Differential Absorption Spectroscopy (...
|
stable
|
| 348 |
Radionuclide decay counting [general]
|
Determination of the counts measured per unit time as a resul...
|
stable
|
| 349 |
IR-GFC
|
Infrared absorption measurement based on the gas-filter corre...
|
stable
|
| 414 |
Fog collection
|
Collection of fog using a mesh or similar capturing device an...
|
stable
|
| 415 |
Campbell-Stokes burn method
|
Sunshine duration is determined by evaluating the burnt areas...
|
stable
|
| 416 |
Contrast-evaluating and scanning devices
|
Sunshine duration is determined by combining multi-sensor det...
|
stable
|
| 417 |
GC-CVAFS
|
Gas chromatography and detection by cold vapour atomic fluore...
|
stable
|
| 418 |
GC-TCD
|
Gas chromatography and detection by a thermal conductivity de...
|
stable
|
| inapplicable |
inapplicable
|
None of the codes in the table are applicable in the context ...
|
stable
|
| unknown |
unknown
|
The measurement/observing method is unknown.
|
stable
|