CO _ CGR _ surface - insitu _ ISAC _ data1

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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)

Last updated date	2024-05-06
Name	Ignazio Fontana
Prefix
Email	ignazio.fontana@cnr.it
Organization No	138
Organization acronym	IASCNR
Organization name	Istituto per lo studio degli impatti Antropici e Sostenibilità in ambiente marino
Organization country/territory	Italy
Address 1
Address 2
Address 3
Country/territory	Italy
Tel	+39 0924 40600
Fax	+39 0924 40445

Last updated date	2024-05-06
Name	Giorgio Tranchida
Prefix
Email	giorgio.tranchida@cnr.it
Organization No	138
Organization acronym	IASCNR
Organization name	Istituto per lo studio degli impatti Antropici e Sostenibilità in ambiente marino
Organization country/territory	Italy
Address 1
Address 2
Address 3
Country/territory	Italy
Tel	+39 0924 40600
Fax	+39 0924 40445

Last updated date	2024-05-06
Name	Giovanni Giacalone
Prefix
Email	giovanni.giacalone@cnr.it
Organization No	138
Organization acronym	IASCNR
Organization name	Istituto per lo studio degli impatti Antropici e Sostenibilità in ambiente marino
Organization country/territory	Italy
Address 1
Address 2
Address 3
Country/territory	Italy
Tel	+39 0924 40600
Fax	+39 0924 40445

Last updated date	2024-05-06
Name	Maurizio Busetto
Prefix
Email	m.busetto@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
Country/territory	Italy
Tel
Fax

Last updated date	2024-05-06
Name	Francescopiero Calzolari
Prefix
Email	f.calzolari@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
Country/territory	Italy
Tel
Fax

Last updated date	2024-05-06
Name	Paolo Cristofanelli
Prefix
Email	p.cristofanelli@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	ISAC-CNR, VIa Gobetti 101 - 40129 Bologna, Italy
Country/territory	Italy
Tel	+39 051 6399652
Fax	+39 051 6399652

Collaborator(s)

NO	138
Acronym	IASCNR
Name	Istituto per lo studio degli impatti Antropici e Sostenibilità in ambiente marino

Aim of Observation

Monitoring background conditions, and the influence of air pollution

Data Time zone

UTC+01:00

Unit

ppb

Calibration Scale

9999-12-31 00:00:00 - 9999-12-31 23:59:59: WMO CO X2014A

Instrument(s)

9999-12-31 00:00:00 - 9999-12-31 23:59:59: Picarro G2401 (S/N: CFKADS2152-20141128)(CRDS)

Intake Height above ground level

9999-12-31 00:00:00 - 9999-12-31 23:59:59: 4 (m)

Sampling Frequency

5 seconds

Measurement Calibration

Until 2016, the CGR system was manually calibrated every three months by using a set of 6 commercial standards (synthetic air) traced back to a set of n.3 calibration standard from NOAA-GMDL (CB11039, CB11164, CB10928). Each calibration event included three single injections (60 minute each). Starting from 2017, a NOAA-GMDL standard (ND01759, provided by ENEA, Laboratory for Observations and Analyses of Earth and Climate, Lampedusa.) was available at CGR and was used to calibrate the measurements each month (each week starting from 2018) by scaling the measured concentration. To minimise the mixture consumption, a single injection is performed every week (duration: 45 minutes). The injection of standard is followed by the injection (45 minutes each) of two target gases (real air matrix). Starting from 1st June 2022, two real-air matrix calibration standards linked to WMO standards and one short-term target gases were used. Three cycle of calibration injections are carried out every 7 days, while target gas is injected every 24 hours.

Data Processing

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. An outlier rejection methodology (based on that described by El Yazidi et al., AMT, 2018) is applied to the 1-minute time series before calculation of hourly average values. 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/seasonal/quaterly basis.
Final aggregation to hourly average are 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 with other gas parameters, meteorology and aerosol for special events.

Processing for averaging

[Hourly] YEAR 2015 - 2016
Hourly data were obtained by averaging 1-minute average mean values.

YEAR 2017 - onwards
Hourly data were obtained by averaging 1-minute average mean values not affected by local spikes
[Daily] YEAR 2015-2016
Daily mean values were calculated by averaging hourly mean values with flags ".L." or ".S.".

YEAR 2017 - onwards
Daily mean values were obtained by averaging hourly mean data with ORG_QCflag = 0.000
[Monthly] YEAR 2015-2016
Monthly mean values were obtained by averaging daily mean data with at least 12 hourly values.

YEAR 2017 - onwards
Monthly means are produced by first averaging daily mean values on a weekly basis and these weekly values are averaged for each month to give the monthly means.

Original Data Quality Flag

YEAR 2015-2016
"I.." missed data
"..V" large variability of CO within one hour (hourly CO standard deviation larger than 30 ppb)
".L." data recorded under land breeze wind regime
".S." data recorded under sea breeze wind regime

YEAR 2017- onwards
Flag 0.390 indicates data completeness under 50% for 1-hour mean value calculation.
Flag 0.559 indicates not-background influence.
Flag 0.999 indicates missing data

Data Quality Flag (Valid/Invalid)

Valid: ..D.
Valid: .VD.
Valid (background): 0.0000
Invalid: 0.9990
Invalid: I...
Valid: ..L.
Invalid: ...E
Valid: .VLB
Valid: .VL.
Valid (background): ..S.
Valid: .VSB
Valid: 0.5590
Valid: 0.3900
Valid: 0.4600
Valid (background): .S.
Valid: .LV
Valid: .SV
Valid (background): ...
Valid: ..V
Valid (background): ....
Valid: .V..
Invalid: I..
Valid: .L.
Valid: .VDL
Valid: .V.L
Valid: .VDS
Valid: ..DS
Valid: ..DL
Valid (background): ...S
Valid: ...L
Valid: .V.S
Valid: .VS.

Observation Status

Operational/Reporting

Description

Capo Granitola Observatory is located along the southern Sicily coastline facing the Strait of Sicily, at Torretta Granitola (12 km from Mazara del Vallo, 52,000 inhabitants), within the scientific campus of the Institute for the Marine-Coastal Environment (CNR-IAMC). CGR location is affected by the sea-land breeze regime, with prevailing gentle wind breezes (up to 4 m/s) from inland (NW-NE) during the night and prevailing winds from the sea (W-SE) during daytime.
CO 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 CO, the instrument is also capable to measure CH4, CO2 and H2O. Thus, the CO data can be corrected for interferences of remaining water traces.
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. Flow as well as internal T and RH are continuously monitored and recorded by the acquisition system.
1/4” (OD) Synflex 1300 tubes is used to connect the air intake manifold.

Meteorological Data Availability
(1: Available)

Wind direction:
Wind speed:
Relative humidity:
Precipitation amount:
Air pressure:
Air temperature:
Dew point temperature:
Sea water temperature:
Sea surface water temperature:
Sea water salinity:
Sea surface water salinity:

Meteorological Data Description

Meteorological data may remain as first provided, even when greenhouse gas data are updated.

DOI Metadata

DOI

co_cgr_surface-insitu_37_9999-9999_hourly.nc	10.50849/WDCGG_0037-6048-3001-01-01-9999
co_cgr_surface-insitu_37_9999-9999_hourly.txt	10.50849/WDCGG_0037-6048-3001-01-01-9999
co_cgr_surface-insitu_37_9999-9999_daily.nc	10.50849/WDCGG_0037-6048-3001-01-01-9999
co_cgr_surface-insitu_37_9999-9999_daily.txt	10.50849/WDCGG_0037-6048-3001-01-01-9999
co_cgr_surface-insitu_37_9999-9999_monthly.nc	10.50849/WDCGG_0037-6048-3001-01-01-9999
co_cgr_surface-insitu_37_9999-9999_monthly.txt	10.50849/WDCGG_0037-6048-3001-01-01-9999

Version

2024-05-06-1407 (Data Version History)
* DOIs and file names may have multiple versions. Be sure to check the data version.

Title

Atmospheric CO at Capo Granitola by National Research Council, Institute of Atmospheric Sciences and Climate, dataset published as CO_CGR_surface-insitu_ISAC_data1 at WDCGG

Creator

National Research Council, Institute of Atmospheric Sciences and Climate
Ignazio Fontana (IASCNR)
Giorgio Tranchida (IASCNR)
Giovanni Giacalone (IASCNR)
Maurizio Busetto (IASCNR)
Francescopiero Calzolari (IASCNR)
Paolo Cristofanelli (IASCNR)

Publisher

World Data Centre for Greenhouse Gases

Publication Date

2018-06-14 (Last Updated: 2024-05-09)

Format

Text (WDCGG Data Format Table, WDCGG Meteorological Data Format Table), NetCDF

Relation List (Is Part Of)

All CO data contributed to WDCGG by GAW stations and mobiles by 2024-09-24
All CO data contributed to WDCGG by GAW stations and mobiles by 2023-09-13
All CO data contributed to WDCGG by GAW stations and mobiles by 2022-09-05
All CO data contributed to WDCGG by GAW stations and mobiles by 2021-08-27
All CO data contributed to WDCGG by GAW stations and mobiles by 2020-09-28
All CO data contributed to WDCGG by GAW stations and mobiles by 2019-09-19
All CO data contributed to WDCGG by GAW stations and mobiles by 2018-10-25

Geolocation Point

Latitude (north: +; south: -)	37.571111
Longitude (east: +; west: -)	12.659722

GAW Data Policy

"For Scientific purposes, access to these data is unlimited and provided without charge. By their use you accept that an offer of co-authorship will be made through personal contact with the data providers or owners whenever substantial use is made of their data. In all cases, an acknowledgement must be made to the data providers or owners and to the data centre when these data are used within a publication."

Citation format

This format is an example of the WDCGG standard citation.
Please follow the citation format which the data providers or owners indicate.

Ignazio Fontana (IASCNR), Giorgio Tranchida (IASCNR), Giovanni Giacalone (IASCNR), Maurizio Busetto (ISAC), Francescopiero Calzolari (ISAC), Paolo Cristofanelli (ISAC), Atmospheric CO at Capo Granitola by National Research Council, Institute of Atmospheric Sciences and Climate , dataset published as CO_CGR_ surface-insitu_ISAC_data1 at WDCGG, ver. 2024-05-06-1407, https://doi.org/10.50849/WDCGG_0037-6048-3001-01-01-9999 (Reference date^*: YYYY/MM/DD)

* As the reference date, please indicate the date you downloaded the files.

Reference(s)

1	Cristofanelli P, Busetto M, Calzolari F, Ammoscato I, Gullì D, Dinoi A, et al.. Investigation of reactive gases and methane variability in the coastal boundary layer of the central Mediterranean basin. Elem Sci Anth. 2017;5:12. DOI: http://doi.org/10.1525/elementa.216

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