| ![](../../../figure/gaw_stations.gif)
Trinidad Head
-O3-
Observation |
Category |
: |
Air sampling observation |
Situation |
: |
ongoing |
Time zone |
: |
UTC |
Sampling |
Sampling height |
: |
6 |
Description |
: |
continuous |
Sampling and analysis frequency |
: |
Continuous |
Sampling environment |
: |
Coastal
Influenced by local pollution, fires, and transport |
Description for sampling analysis |
: |
Teflon inlet and inlet line with PTFE filter membrane
1-3 lpm sample flow rate |
Instrument and Analysis |
Measurement method |
: |
Light absorption analysis (UV) |
Current status and history of instrument |
: |
2002.04- :TEI 49C |
Description of instrument |
: |
1.0 ppb precision
+/- 1.0% full scale linearity |
Calibration |
Current scale employed in the measurement |
: |
the NIST standard |
Measurement calibration |
: |
0-200 ppb calibration scale
NIST standard for ozone production |
Scale and calibration(treasability) |
: |
NIST standard
Calibrated February 2012 |
Data Processing |
Measurement unit |
: |
ppb |
Data processing |
: |
All data in scrutinized to ensure that data is removed that has been influenced by an external factor. All other data is used for the most complete data set |
Processing for averaging |
: |
Processing for Hourly Data: all data averaged Processing for Daily Data: all data averaged Processing for Monthly Data: all data averaged |
Data flag |
: |
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Data remarks |
: |
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Other Information |
Scientific aim |
: |
Measurement of background air quality over the eastern Pacific and detection of transpacific pollution.
Local Pollution studies
Effects of Wildfires on surface level ozone |
Reference |
: |
http://www.esrl.noaa.gov/gmd/ozwv/surfoz/index.html |
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submitted by Earth System Research Laboratory, NOAA |
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