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METEOROLOGY (influencing weather conditions A01G 15/00; dispersing fog E01H 13/00; instruments for measuring single variable in general, see the appropriate subclass of G01, e.g. G01K, G01L; obtaining meteorological information by radar G01S 13/95)
Definition statement
This subclass covers:

Measurement of certain ambient atmospheric conditions.

Adaptations of balloons, missiles, or aircrafts for meteorological purposes.

Radiosondes.

Devices for predicting weather conditions.

Weather houses or similar ornamental devices for indicating humidity.

Sunshine-duration recorders.

Rainfall or precipitation gauges.

Measuring atmospheric potential differences, e.g. due to electrical charges in clouds.

Catathermometers for measuring "cooling value" related either to weather conditions or to comfort of other human environment.

Testing or calibrating meteorological apparatus.

Relationship between large subject matter areas

Instruments for measuring single physical variables, e.g. temperature, pressure or wind speed, should be classified in the appropriate subclasses of class G01, e.g. G01K, G01L or G01P whereas G01W should be used for the classification of instruments specializing or combining those measurements for the purpose of deducing, indicating or forecasting weather conditions or meteorological information.

References relevant to classification in this subclass
This subclass does not cover:

Radar, sonar, lidar or analogous systems, designed for meteorological use

Informative references
Attention is drawn to the following places, which may be of interest for search:

Influencing weather conditions in horticulture, cultivation, forestry or watering

Control of watering for watering gardens, fields and sports grounds

Heating, cooling or ventilating devices in vehicles

Balloons in general

De-icing of aircrafts with automatic initiation by icing detector

Arrangements of road signs to signal icy roads road or to self-illuminate in fog

Dispersing fog in general, e.g. on roads or on airfields

Self-propelled or guided missiles for carrying measuring instruments

Measuring volume

Measuring temperature

Measuring pressure

Measuring intensity of sunshine

Measuring humidity, e.g. hygrometers

Investigating or analysing gaseous mixtures, e.g. polluted air

Measuring speed of fluids, e.g. wind speed

Indicating direction of fluid movement, e.g. by weather vane

Measuring potential differences

File Format Conversion

Geographical information databases

Alarms responsive to formation or anticipated formation of ice

Alarms responsive to calamitous events, e.g. tornados

Transmission systems for measured values

Systems involving transmission of highway information, e.g. weather

Traffic control systems for aircraft with surveillance aids for monitoring atmospheric conditions

Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station

Special rules of classification within this subclass

The following elements are classified in the appropriate subgroup of G01W, and are given the following Indexing Codes as additional information:

Weather detection, monitoring and forecasting for establishing global warming

Real-time site-specific personalized weather information, e.g. nowcasting

Glossary of terms
In this subclass, the following terms (or expressions) are used with the meaning indicated:

Meteorology

includes measurement of certain ambient atmospheric conditions

Synonyms and Keywords

CAT

Clear Air Turbulence

Meteorology
Special rules of classification within this subclass/group

This group also contains the following elements, in which case the indicated Indexing Code needs to be given as additional information:

Clear air turbulence (CAT) detection and/or forecasting, e.g. for aircrafts

Main server receiving weather information from several sub-stations

Instruments for indicating weather conditions by measuring two or more variables, e.g. humidity, pressure, temperature, cloud cover, wind speed (G01W 1/10 takes precedence)
References relevant to classification in this subgroup
This subgroup does not cover:

Devices for predicting weather conditions

giving a combined indication of weather conditions (catathermometers for measuring "cooling value" related either to weather conditions or to comfort of other human environment G01W 1/17; computers per se G06)
References relevant to classification in this subgroup
This subgroup does not cover:

Catathermometers for measuring "cooling value" related to either weather conditions or to comfort of other human environment

Informative references
Attention is drawn to the following places, which may be of interest for search:

Computers per se

Adaptations of balloons, missiles, or aircraft for meteorological purposes; Radiosondes (transmission of measurements G01D; transmitting circuits H04B; { balloons in general B64B; aeroplanes in general B64D; missiles in general F42B 15/00})
Informative references
Attention is drawn to the following places, which may be of interest for search:

Transmission systems for measured values

Self-propelled projectiles or missiles for carrying measuring instruments

Sunshine duration recorders (measuring intensity of sunshine G01J)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Measuring intensity of sunshine

Solar radiation detection for vehicle heating, cooling or ventilation

Rainfall or precipitation gauges (measuring volume in general G01F)
References relevant to classification in this subgroup
This subgroup does not cover:

Rain sensors for cleaning of vehicles, e.g. window wiper control

Informative references
Attention is drawn to the following places, which may be of interest for search:

Measuring volume in general

Measuring atmospheric potential differences, e.g. due to electrical charges in clouds (measuring potentiels in general G01R)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Measuring potential differences in general

Installations of lightning conductors

Catathermometers for measuring "cooling value" related either to weather conditions or to comfort of other human environment
Informative references
Attention is drawn to the following places, which may be of interest for search:

Electric circuits for transmission of signals between vehicle parts or subsystems concerning the atmospheric environment

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Last Modified: 10/11/2013