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 Organization

NO 37
Acronym ISAC
Name National Research Council, Institute of Atmospheric Sciences and Climate
Address 1
Address 2
Address 3 Via Piero Gobetti, 101 40129 BOLOGNA (IT)
Country/Territory Italy
Website http://www.isac.cnr.it

 Contact(s)

Name Daniel Gullì
Prefix
Email d.gulli@isac.cnr.it
Organization No 37
Organization acronym ISAC
Organization name National Research Council, Institute of Atmospheric Sciences and Climate
Organization country/territory Italy
Address 1
Address 2
Address 3 Area Industriale Comp. 15, 88046 Lamezia Terme
Country/territory Italy
Tel +39 0968 209150
Fax
Last updated date 2019-12-16


Name Claudia Calidonna
Prefix Dr.
Email cr.calidonna@isac.cnr.it
Organization No 37
Organization acronym ISAC
Organization name National Research Council, Institute of Atmospheric Sciences and Climate
Organization country/territory Italy
Address 1
Address 2
Address 3 Area Industriale Comp. 15, 88046 Lamezia Terme
Country/territory Italy
Tel +39 0968 209150
Fax
Last updated date 2019-12-16


Name Ivano Ammoscato
Prefix Mr.
Email i.ammoscato@isac.cnr.it
Organization No 37
Organization acronym ISAC
Organization name National Research Council, Institute of Atmospheric Sciences and Climate
Organization country/territory Italy
Address 1
Address 2
Address 3 Area Industriale Comp. 15, 88046 Lamezia Terme
Country/territory Italy
Tel +39 0968 209150
Fax
Last updated date 2019-12-16


 Background observation
 UTC+01:00
 ppm
 9999-12-31 00:00:00 - 9999-12-31 23:59:59: WMO CO2 X2007
 9999-12-31 00:00:00 - 9999-12-31 23:59:59: Picarro G2401(CRDS)
 9999-12-31 00:00:00 - 9999-12-31 23:59:59: 8 (m)
 5 seconds
 Calibration checks are carried out by using two working standards with representing upper and lower ranges of the expected environmental variability.
During the period of investigation, routine checks were carried out using Observatory working standards to evaluate possible drifts and the stability of calibration factors.
 Data are recorded on a 5 s basis by the Picarro internal PC and mirrored to a station server, then delivered in NRT mode to ISAC-CNR HQ in Bologna, where 1-minute averages were calculated. On an hourly basis standard deviation values data were flagged to identify local contamination (see Data Quality Flag).

For all the instruments and Observatories, information on instrument functioning and intervention are stored in an e-logbook.

1-minute data and metadata are visually inspected on a daily basis by an HTML page reporting the last 48h of available measurements and instrumental internal parameters. Data and metadata are further analyzed on a monthly basis.
Final aggregation to hourly average will be executed using validated 1-minute data (i.e. by excluding calibration records, missed records and local-contaminated records).

Quality assurance procedures involve time series plots, consistency checks on co-variability among gas parameters, meteorology and aerosol properties
 [Hourly]
 [Daily]
 [Monthly]
 "I..." missed data
".V.." large variability of CO2 within one hour (hourly CO2 standard deviation larger than 0.30 ppm)
"..D." hour-to-hour difference higher than 0.25 ppm
"...L" data recorded under land breeze wind regime
"...S" data recorded under sea breeze wind regime
 Operational/Reporting
 Scientific Aim : To investigate the influence of specific atmospheric processes (e.g. long-range air mass transport, mineral dust emitted from Northern Africa, anthropogenic ship emissions, Etna and Stromboli voulcanos) on the variability of trace gases and aerosol in the Mediterranean basin.

Sampling Environment : Lamezia Terme CNR-ISAC station is located, 600 m from the coastline of the Lamezia Terme plane, outside the only valley in Calabria which allows the Tyrrhenian Sea to connect with the Ionio Sea. Its complex orography and its long and narrow shape create a complex interaction of breezes which develop perpendicularly the two coasts with the synoptic circulation, that mainly goes west. In detail, breezes from the sea go mainly W-WSW, while breezes from the earth go mainly E-ENE.
A rich vegetation characterise the area with typical Mediterrenean species.

Sampling and Analyses : The air intake is composed of a Teflon tube (length: 2600 mm) with 50 mm inner diameter. An upper hood (Teflon-coated) is used to prevent rain penetration inside the sampling intake. Air is sampled 1.5 m above the station roof. Internal temperature and relative humidity are continuously monitored and temperature is keep 4 Celsius degrees higher than ambient temperature to prevent condensation. Flow is maintained constant minimizing (below 5 s) the residence time of sampling inside the air intake.

Description of Instruments : CO2 observations are performed with a commercially available instrument (Picarro Inc. G2401) based on the Wavelength-Scanned Cavity Ringdown Spectroscopy technique coupled to a custom-built calibration unit. Along with CO2, the instrument is also capable to measure CO, CH4 and H2O. Thus, the CO2 data can be corrected for interferences of remaining water traces. CO2 reading were further corrected for water vapor intereference by using the empirical humidity correction provided by Chen et al. AMT, 2010.
 Wind direction: 1
 Wind speed: 1
 Relative humidity: 1
 Precipitation amount: 1
 Air pressure: 1
 Air temperature: 1
 Dew point temperature: 0
 Sea water temperature: 0
 Sea surface water temperature: 0
 Sea water salinity: 0
 Sea surface water salinity: 0
Meteorological data may remain as first provded, even when greenhouse gas data are updated.
 
No data available