Human observation
|
24 |
|
Concept
|
stable
|
(Optical) filter Instrument
|
58 |
|
Concept
|
stable
|
(Ruler for) rain gauge
|
59 |
|
Concept
|
stable
|
(Ultra)sonic anemometer
|
60 |
|
Concept
|
stable
|
Adsorption - scintillation counting
|
62 |
|
Concept
|
stable
|
Aerovane (wind vane with propeller)
|
63 |
|
Concept
|
stable
|
Alpha counting
|
64 |
|
Concept
|
stable
|
Anemometer [general]
|
65 |
|
Concept
|
stable
|
Aneroid barometer (evacuated capsule)
|
66 |
|
Concept
|
stable
|
Anion exchange membrane (AEM)
|
67 |
|
Concept
|
stable
|
Atmometer
|
68 |
|
Concept
|
stable
|
Atmospherics ('sferics') detection
|
69 |
|
Concept
|
stable
|
Atomic absorption spectrophotometry (AAS)
|
70 |
|
Concept
|
stable
|
Atomic emission spectrophotometry (AES)
|
71 |
|
Concept
|
stable
|
BSRN compliant instrument
|
72 |
|
Concept
|
stable
|
Barometer, mercury column
|
73 |
|
Concept
|
stable
|
Barometer, mercury-free column
|
74 |
|
Concept
|
stable
|
Beta counting
|
75 |
|
Concept
|
stable
|
Bimetal thermometer
|
76 |
|
Concept
|
stable
|
Bowen-ratio method
|
77 |
|
Concept
|
stable
|
Brewer
|
78 |
|
Concept
|
stable
|
Brewer-GDR
|
79 |
|
Concept
|
stable
|
Brewer-Mast Sonde
|
80 |
|
Concept
|
stable
|
Capacitive rain sensor
|
82 |
|
Concept
|
stable
|
Capillary electrophoresis (CE)
|
83 |
|
Concept
|
stable
|
Carbon-Iodine Sonde (KC Sonde)
|
84 |
|
Concept
|
stable
|
Colorimetric titration (Gran method)
|
87 |
|
Concept
|
stable
|
Colorimetric titration [general]
|
88 |
|
Concept
|
stable
|
Colorimetry (Saltzman)
|
90 |
|
Concept
|
stable
|
Colorimetry (thorin)
|
91 |
|
Concept
|
stable
|
Conductometry
|
94 |
|
Concept
|
stable
|
Cup anemometer
|
95 |
|
Concept
|
stable
|
Cup anemometer (3 or 4 cups)
|
96 |
|
Concept
|
stable
|
Cuvette
|
97 |
|
Concept
|
stable
|
Denuder
|
98 |
|
Concept
|
stable
|
Denuder
|
99 |
|
Concept
|
stable
|
Disdrometer (drop spectrographs)
|
102 |
|
Concept
|
stable
|
Disjunct eddy covariance method
|
103 |
|
Concept
|
stable
|
Dissipation method
|
105 |
|
Concept
|
stable
|
Dobson
|
106 |
|
Concept
|
stable
|
ECC Sonde
|
107 |
|
Concept
|
stable
|
Eddy accumulation method
|
108 |
|
Concept
|
stable
|
Eddy covariance method
|
109 |
|
Concept
|
stable
|
Electric conductivity (EC meter)
|
110 |
|
Concept
|
stable
|
Electronic pressure transducer (silicon diaphragm)
|
111 |
|
Concept
|
stable
|
Estimation from visual observation
|
112 |
|
Concept
|
stable
|
Evaporation pan and-or tank
|
113 |
|
Concept
|
stable
|
Faraday cup photochemistry
|
114 |
|
Concept
|
stable
|
Filter sampling + alpha counting
|
115 |
|
Concept
|
stable
|
Filter sampling + gamma spectrometry
|
116 |
|
Concept
|
stable
|
Flame-ionization detector (FID)
|
119 |
|
Concept
|
stable
|
Flask sampling (analytical method unspecified)
|
120 |
|
Concept
|
stable
|
Flow injection analyzer (FIA)
|
121 |
|
Concept
|
stable
|
Flux variance method
|
123 |
|
Concept
|
stable
|
Gradient method
|
125 |
|
Concept
|
stable
|
Gravimetry [general]
|
127 |
|
Concept
|
stable
|
High Performance Liquid Chromatography (HPLC)
|
129 |
|
Concept
|
stable
|
Hot wire anemometer
|
130 |
|
Concept
|
stable
|
Hypsometer (water boiling point)
|
132 |
|
Concept
|
stable
|
ICP-AES
|
133 |
|
Concept
|
stable
|
ICP-MS
|
134 |
|
Concept
|
stable
|
Indian Sonde
|
135 |
|
Concept
|
stable
|
Interferential method
|
136 |
|
Concept
|
stable
|
Ion Chromatography (IC) [general]
|
137 |
|
Concept
|
stable
|
Doppler wind lidar
|
142 |
Light detection and ranging (lidar) with Doppler capability (...
|
Concept
|
stable
|
Raman lidar
|
143 |
Light detection and ranging (lidar) with Raman capability, ty...
|
Concept
|
stable
|
Liquid-in-glass thermometer (mercury-free)
|
144 |
|
Concept
|
stable
|
Lysimeter
|
146 |
|
Concept
|
stable
|
Mass balance method
|
147 |
|
Concept
|
stable
|
Mercury-in-glass thermometer
|
149 |
|
Concept
|
stable
|
Microbarometer (dewar)
|
150 |
|
Concept
|
stable
|
Microtops
|
151 |
|
Concept
|
stable
|
Microtops
|
152 |
|
Concept
|
stable
|
Microtops
|
153 |
|
Concept
|
stable
|
Microwave profiler
|
154 |
|
Concept
|
stable
|
Microwave radiometry
|
155 |
|
Concept
|
stable
|
Microwave radiometry
|
156 |
|
Concept
|
stable
|
NILU_O_2
|
157 |
|
Concept
|
stable
|
NILU_O_3
|
158 |
|
Concept
|
stable
|
Ozone sonde (unspecified)
|
166 |
|
Concept
|
stable
|
Passive Samplers [general]
|
167 |
|
Concept
|
stable
|
Photoacoustic detection
|
168 |
|
Concept
|
stable
|
Pluviograph
|
170 |
|
Concept
|
stable
|
Potassium iodide (KI) method
|
171 |
|
Concept
|
stable
|
Potentiometry (ion-selective electrode)
|
172 |
|
Concept
|
stable
|
Potentiometry (pH meter)
|
173 |
|
Concept
|
stable
|
Pressure balance (piston)
|
174 |
|
Concept
|
stable
|
Pressure plate (solid blade)
|
175 |
|
Concept
|
stable
|
Pressure tube
|
176 |
|
Concept
|
stable
|
Propeller anemometer
|
177 |
|
Concept
|
stable
|
Pyranometer (measurement of IR radiation)
|
179 |
|
Concept
|
stable
|
Pyrradiometer (total global, UV+IR)
|
180 |
|
Concept
|
stable
|
Radio acoustic sounding system (RASS)
|
181 |
|
Concept
|
stable
|
Radio acoustic sounding system (RASS)
|
182 |
|
Concept
|
stable
|
Radio detection and ranging (Radar)
|
183 |
|
Concept
|
stable
|
Radio detection and ranging (Radar) profiler
|
184 |
|
Concept
|
stable
|
Radiochemical Methods [general]
|
185 |
|
Concept
|
stable
|
Regener Sonde (chemiluminescence)
|
186 |
|
Concept
|
stable
|
Resistance thermometer, thermistor
|
188 |
|
Concept
|
stable
|
SAOZ (UV-vis diode array spectrometer)
|
189 |
|
Concept
|
stable
|
Scatterometer
|
190 |
|
Concept
|
stable
|
Separation + manometric determination
|
191 |
|
Concept
|
stable
|
Sonic thermometer
|
195 |
|
Concept
|
stable
|
Sound detection and ranging (Sodar) profiler
|
196 |
|
Concept
|
stable
|
Sunphotometry-Filter Radiometry
|
197 |
|
Concept
|
stable
|
Sunshine duration
|
198 |
|
Concept
|
stable
|
Surface chamber
|
199 |
|
Concept
|
stable
|
Thermocouple, thermopile
|
201 |
|
Concept
|
stable
|
Tipping bucket rain gauge (totalizer)
|
204 |
|
Concept
|
stable
|
Titration
|
205 |
|
Concept
|
stable
|
Transmissometer
|
207 |
|
Concept
|
stable
|
Transport modeling (model unspecified)
|
208 |
|
Concept
|
stable
|
Turbidity measurement
|
209 |
|
Concept
|
stable
|
Umkehr method
|
210 |
|
Concept
|
stable
|
Volumetric measurement
|
211 |
|
Concept
|
stable
|
Weighing type rain gauge (totalizer)
|
212 |
|
Concept
|
stable
|
Wet Chemical Methods [general]
|
213 |
|
Concept
|
stable
|
Wind sock (textile tube)
|
214 |
|
Concept
|
stable
|
Wind vane (solid blade)
|
215 |
|
Concept
|
stable
|
Aerodyne mass spectrometer (AMS)
|
217 |
|
Concept
|
stable
|
EUSAAR protocol
|
218 |
|
Concept
|
stable
|
Filter + beta attenuation (betameter, beta gauge)
|
219 |
|
Concept
|
stable
|
Filter + light attenuation (aethalometer)
|
220 |
|
Concept
|
stable
|
Mass Spectrometry (MS) [general]
|
221 |
|
Concept
|
stable
|
Monitor for AeRosols and GAses (MARGA)
|
222 |
|
Concept
|
stable
|
Particle induced x-ray emission (PIXE)
|
223 |
|
Concept
|
stable
|
Particle soot absorption photometry (PSAP)
|
224 |
|
Concept
|
stable
|
Thermo-optical analyzer (Sunset Labs)
|
225 |
|
Concept
|
stable
|
X-ray fluorescence (XRF)
|
226 |
|
Concept
|
stable
|
Aerodynamic particle sizing spectrometer (APS)
|
227 |
|
Concept
|
stable
|
Aerosol backscatter sonde
|
228 |
|
Concept
|
stable
|
Light scattering
|
229 |
|
Concept
|
stable
|
Nephelometry, integrating
|
230 |
|
Concept
|
stable
|
Cloud condensation nuclei (CCN) counter
|
231 |
|
Concept
|
stable
|
Condensation particle counter (CPC)
|
232 |
|
Concept
|
stable
|
Continuous gravimetry
|
233 |
|
Concept
|
stable
|
Differential mobility particle sizer (DMA, DMPS)
|
234 |
|
Concept
|
stable
|
Diffusion battery
|
235 |
|
Concept
|
stable
|
Electric mobility [general]
|
236 |
|
Concept
|
stable
|
Electrostatic classifier
|
237 |
|
Concept
|
stable
|
Multiangle absorption photometry (MAAP)
|
238 |
|
Concept
|
stable
|
Multistage impactor
|
239 |
|
Concept
|
stable
|
Optical particle counter (OPC)
|
240 |
|
Concept
|
stable
|
Scanning mobility particle sizer (SMPS)
|
241 |
|
Concept
|
stable
|
Twomey static thermal diffusion chamber
|
242 |
|
Concept
|
stable
|
Sun-tracking photometry
|
244 |
|
Concept
|
stable
|
Ceilometer
|
245 |
|
Concept
|
stable
|
Flexpart (dispersion modeling)
|
246 |
|
Concept
|
stable
|
Flextra (trajectory modeling)
|
247 |
|
Concept
|
stable
|
Hysplit (trajectory modeling)
|
248 |
|
Concept
|
stable
|
Lagranto (trajectory modeling)
|
249 |
|
Concept
|
stable
|
Thin film capacitance
|
250 |
|
Concept
|
stable
|
Chilled mirror
|
251 |
|
Concept
|
stable
|
Lithium chloride (LiCl)
|
252 |
|
Concept
|
stable
|
Hair hygrometer-hygrograph
|
253 |
|
Concept
|
stable
|
Hygrometer [general]
|
254 |
|
Concept
|
stable
|
IR absorption hygrometer
|
255 |
|
Concept
|
stable
|
Optical hygrometer
|
256 |
|
Concept
|
stable
|
UV fluorescence-based hygrometer (Lyman-α)
|
257 |
Detection of UV fluorescence signal emitted by the excited OH...
|
Concept
|
stable
|
Electrical aspiration (Frankenberger type)
|
258 |
|
Concept
|
stable
|
Mechanical aspiration
|
259 |
|
Concept
|
stable
|
Bimetallic actinograph
|
263 |
|
Concept
|
stable
|
Pyrheliometer (direct solar, broadband)
|
264 |
|
Concept
|
stable
|
Pyrgeometer (global, infrared)
|
265 |
|
Concept
|
stable
|
Pyranometer (global solar, broadband)
|
266 |
|
Concept
|
stable
|
Spectral pyranometer
|
267 |
|
Concept
|
stable
|
UV-vis spectrometry-radiometry
|
268 |
|
Concept
|
stable
|
Tetrachloromercurate (TCM) absorption - CL
|
270 |
|
Concept
|
stable
|
Colorimetry (ANSA)
|
271 |
|
Concept
|
stable
|
Colorimetry (Griess)
|
272 |
|
Concept
|
stable
|
Colorimetry (indophenol, Bertholet)
|
273 |
|
Concept
|
stable
|
Colorimetry (mercury thiocyanate+iron alum)
|
274 |
|
Concept
|
stable
|
Colorimetry (NEDA)
|
275 |
|
Concept
|
stable
|
Colorimetry (Nessler, K2HgI4)
|
276 |
|
Concept
|
stable
|
Colorimetry (sodium salicylate method for nitrate)
|
277 |
|
Concept
|
stable
|
Colorimetry [general]
|
278 |
|
Concept
|
stable
|
Filter sampling (analytical method unspecified)
|
279 |
|
Concept
|
stable
|
Adsorption tube (charcoal) + elution + GC
|
280 |
|
Concept
|
stable
|
Filter sampling + combustion + IC
|
281 |
|
Concept
|
stable
|
Filter sampling + combustion + other
|
282 |
|
Concept
|
stable
|
Filter sampling + extraction + IC
|
283 |
|
Concept
|
stable
|
Filter sampling + extraction + other
|
284 |
|
Concept
|
stable
|
Filter sampling + gravimetry
|
285 |
|
Concept
|
stable
|
Impregnated filter
|
286 |
|
Concept
|
stable
|
Catalytic conversion 'Au' - CL
|
287 |
|
Concept
|
stable
|
Catalytic conversion 'Fe' - CL
|
288 |
|
Concept
|
stable
|
Catalytic conversion 'Mb' - CL
|
289 |
|
Concept
|
stable
|
Chemiluminescence (CL) [general]
|
290 |
|
Concept
|
stable
|
Photolytic conversion - CL
|
291 |
|
Concept
|
stable
|
Monitor for AeRosols and GAses (MARGA) Metrohm
|
292 |
|
Concept
|
stable
|
Filter sampling + photo multiplier tube (PMT)
|
293 |
|
Concept
|
stable
|
Fluorescence [general]
|
294 |
|
Concept
|
stable
|
UV fluorescence
|
295 |
|
Concept
|
stable
|
Vacuum UV fluorescence
|
296 |
|
Concept
|
stable
|
Gas Chromatography (GC) [general]
|
297 |
|
Concept
|
stable
|
GC-ECD
|
298 |
|
Concept
|
stable
|
GC-ECD-FID
|
299 |
|
Concept
|
stable
|
GC-ECD-MS
|
300 |
|
Concept
|
stable
|
GC-FID
|
301 |
|
Concept
|
stable
|
GC-HgO reduction-UV absorption
|
302 |
|
Concept
|
stable
|
GC-MS
|
303 |
|
Concept
|
stable
|
H2O2 conversion - IC
|
304 |
|
Concept
|
stable
|
Cavity ring-down spectroscopy (CRDS)
|
305 |
|
Concept
|
stable
|
Cavity-enhanced absorption spectroscopy (CEAS)
|
306 |
|
Concept
|
stable
|
Integrated cavity output spectroscopy (ICOS)
|
307 |
|
Concept
|
stable
|
Laser induced fluorescence (LIF)
|
308 |
|
Concept
|
stable
|
Laser photoacoustic spectroscopy (LPAS)
|
309 |
|
Concept
|
stable
|
Laser spectroscopy [general]
|
310 |
|
Concept
|
stable
|
Quantum cascade laser (QCL) spectroscopy
|
311 |
|
Concept
|
stable
|
Chemical ionization MS (CIMS) with matrix isolation
|
312 |
|
Concept
|
stable
|
Proton transfer reaction mass spectrometry (PTR-MS)
|
313 |
|
Concept
|
stable
|
IR spectrometry-radiometry [general]
|
314 |
|
Concept
|
stable
|
Light absorption photometry
|
315 |
|
Concept
|
stable
|
Long path absorption photometry (LOPAP)
|
316 |
|
Concept
|
stable
|
Non-dispersive IR (NDIR) absorption
|
317 |
|
Concept
|
stable
|
Non-dispersive UV (NDUV)
|
318 |
|
Concept
|
stable
|
UV absorption spectrometry-radiometry
|
319 |
|
Concept
|
stable
|
Integrated path differential absorption (IPDA) lidar
|
320 |
Light detection and ranging (lidar) with integrated path diff...
|
Concept
|
stable
|
Differential optical absorption (DOAS)
|
321 |
|
Concept
|
stable
|
Fourier-transform IR spectroscopy (FTIR)
|
322 |
|
Concept
|
stable
|
TCCON Fourier-transform IR spectroscopy (TCCON-FTIR)
|
323 |
|
Concept
|
stable
|
Radiosonde with NAVAID
|
327 |
|
Concept
|
stable
|
Radiosonde with radar tracking
|
328 |
|
Concept
|
stable
|
Radiosonde with radiotheodolite tracking
|
329 |
|
Concept
|
stable
|
Radiosonde with composite method tracking
|
330 |
|
Concept
|
stable
|
Radiosonde (tracking unspecified)
|
331 |
|
Concept
|
stable
|
Pilot balloon with optical tracking)
|
332 |
|
Concept
|
stable
|
Differential absorption lidar (DIAL)
|
335 |
Light detection and ranging (lidar) with differential absorpt...
|
Concept
|
stable
|
Microwave radiometry
|
336 |
|
Concept
|
stable
|
Tunable diode lase spectroscopy (TDLS)
|
338 |
Tunable diode lase spectroscopy (TDLS)
|
Concept
|
stable
|
UV spectroradiometry
|
339 |
|
Concept
|
stable
|
Wet-bulb thermometer
|
340 |
A thermometer having a bulb that is kept moistened when humid...
|
Concept
|
stable
|
Backscatter lidar
|
341 |
Elastic backscatter light detection and ranging (lidar) typic...
|
Concept
|
stable
|
High spectral resolution (HSR) lidar
|
342 |
Light detection and ranging (lidar) with high spectral resolu...
|
Concept
|
stable
|
Fog collection
|
343 |
Collection of fog using a mesh or similar capturing device an...
|
Concept
|
stable
|
GC-CVAFS
|
344 |
Gas chromatography and detection by cold vapour atomic fluore...
|
Concept
|
stable
|
GC-TCD
|
345 |
Gas chromatography and detection by a thermal conductivity de...
|
Concept
|
stable
|
Electrostatic collection + alpha counting
|
346 |
Alpha counting after electrostatic collection of measurand.
|
Concept
|
stable
|
Tunable Infrared Laser Differential Absorption Spectroscopy (TILDAS)
|
347 |
Tunable Infrared Laser Differential Absorption Spectroscopy (...
|
Concept
|
stable
|
Radionuclide decay counting [general]
|
348 |
Determination of the counts measured per unit time as a resul...
|
Concept
|
stable
|
IR-GFC
|
349 |
Infrared absorption measurement based on the gas-filter corre...
|
Concept
|
stable
|
inapplicable
|
inapplicable |
None of the codes in the table are applicable in the context ...
|
Concept
|
stable
|
unknown
|
unknown |
The measurement/observing method is unknown.
|
Concept
|
stable
|