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WDCGG Data Submission and Dissemination Guide (PDF 1.2Mbyte)

WDCGG leaflet (PDF 2.7MByte, July 2008)

Monte Cimone - UNIURB

Parameter Inventory Parameter Metadata Station Contributor
CH4 *
continuous
CO
continuous
N2O **
continuous
SF6
continuous
Observation Processing/Calibration Contact Person Reference Data/Quick Plot
Category Air sampling observation
Sampling Type continuous
Sampling Height/Depth 7
Sampling and Analysis Frequency high flux of real air continuosly flow through the sampling line and every 30 minutes a portion is splitted for 3 minutes to the gas-chromatograph sampling loop.
Sampling Environment Environment: Mountain peak with completly free horizon.
No local sources of contamination. No access by road.
Timberline about 300m below the measurement site.
Measurement Method Gas Chromatography (FID)
Current status and history of Instruments measurements started on Jan 2007 with a modified version of a commercial Agilent GC6890 and are still ongoing;
Description of Instruments time resolution: 1 measurement every 30 minutes;
sensitivity: generally below 2 ppbv
detection limit: theoretical LOQ (S/N = 10) 45 ppbv
measurements range: fully calibrated in the range 1800 to 1980 ppb (NOAA cylinders available); extrapolated for higher values
Time Zone Local time (UTC+1)
Data Period 2008-01-01 - 2016-12-31
Data Type event, daily, monthly
Parameter detail
Other Descriptions for Sampling and Analyses The air is sampled by a 2m long heated intake at 7 m height above
the ground. The air intake is composed by an external (outside building) steel pipe (internally covered by Teflon) and the internal (inside building) Pyrex pipe.
A Stainless steel sampling line (lenght 10m) connects the air intake with the high flux sampling pump in front of the sampling loop of the analyzer; a cracking check valve is installed downstream the pump to ensure a sligthly overpressure inside the sampling loop and discharge the excess of flow to vent.
Scientific Aim
Supporting Contributor(s) University of Urbino - Italy
Last update 2017-08-03
Situation ongoing

Category Parameter Country/Territory Contributor
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(Created : 2001/07/02    Updated : 2018/07/11)

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