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MCH653NB0
-N2O-
| Observation |
| Frequency |
: |
Continuous |
| Method |
: |
GC-ECD |
| Instrument |
: |
Hewlett Packard |
HP5880 / HP5890 |
| Description |
: |
In the GAGE/AGAGE global network program, continuous high frequency gas chromatographic measurements of two biogenic/anthropogenic gases are carried out at globally distributed sites.
The Global Atmospheric Gases Experiment (GAGE) utilizes HP5880 gas chromatographs and the recently initiated Advanced GAGE (AGAGE) uses a new fully automated system from the Scripps Institution of Oceanography containing a custom-designed sample module and HP5890 and Carle Instruments gas chromatographic components.
Individual measurements are generally made 12 times daily at each site for GAGE and more than 30 times daily at each site for AGAGE. |
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| Calibration |
| Scale |
: |
SIO-1998 scale |
| Description |
: |
The data presented here are reported in the SIO-1998 calibration scale (Prinn et al., JGR 2000). |
| Data Processing |
| Unit |
: |
ppb |
| Description |
: |
The AGAGE database has been completely re-computed (April 1998) to introduce a new and improved pollution analysis scheme and thus pollution designations may differ from previous versions of the data. |
| Average Procedure |
| Hourly |
: |
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| Daily |
: |
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| Monthly |
: |
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| Flag |
| Description |
: |
ALE/GAGE/AGAGE measurements which are suspected to be influenced by local or regional pollution events are marked with a 'P'. |
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