cmn644n00.isac.as.cn.ch4.nl.hr2010
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Citation proposal
(2011) . cmn644n00.isac.as.cn.ch4.nl.hr2010. https://geoportal.mountaingenius.org/geonetwork/srv/api/records/b3af743d-c6cc-44c4-9206-ae93d83be70d |
Simple
- Alternate title
- Date ( Publication )
- 2011-04-05T03:00:00
- Purpose
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Following water vapor and carbon dioxide, methane (CH4) is the most abundant greenhouse gas in the troposphere. Concentrations of CH4 have more than doubled since pre-industrial times, with a current globally-averaged mixing ratio of 1750 ppbv.
CH4 has a 100-year global Warming Potential (GWP) of 21 and an atmospheric life time of 12 years.
Additional CH4 is actually much more effective as a greenhouse gas than additional carbon dioxide.
Methane is also the most abundant reactive trace gas in the troposphere and its reactivity is important to both tropospheric and stratospheric chemistry.
In fact, in troposphere, the oxidation of CH4 by hydroxyl radical (OH) leads to the formation of formaldehyde (CH2 O), carbon monoxide, and ozone if enough nitrogen oxides are present.
Thus along with CO, CH4 is a key compunds in the definition of tropospheric OH levels.
In stratosphere, CH4 affects the concentration of water vapor and ozone.
It plays a key role in the conversion of reactive chlorine to less reactive HCl in the stratosphere.
For understanding the factors influencing the tropospheric CH4 budget, continuous monitoring in background conditions (like at the ICO-OV) represents a fundamental activity.
GAW CH4 measurements are used primarily to constrain the global CH4 budget and calculate its radiative forcing.
- Status
- On going
Point of contact
Point of contact
- Maintenance and update frequency
- As needed
- Keywords
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- SHARE , Network , Station , High Altitude
- Keywords
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- GAW
- Use limitation
- No conditions apply
- Access constraints
- Copyright
- Other constraints
- Character set
- UTF8
- Topic category
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- Climatology, meteorology, atmosphere
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- Supplemental Information
- Reference system identifier
- WGS 1984
- OnLine resource
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Mt. Cimone website
Official website of the Mount Cimone Station - Italian Climate Observatory "Ottavio Vittori"
- OnLine resource
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CEOP Website
Official website of the CEOP - Coordinated Energy and Water Cycle Observation Project.
- OnLine resource
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CEOP-HE Website
HE is a component of ‘regional focus’ within the Coordinated Energy and Water Cycle Observation Project (CEOP) of the Global Energy and Water Cycle Experiment (GEWEX), under the WCRP of WMO.
- OnLine resource
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gn:MountCimone
Show position
- OnLine resource
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WMO_TD_1478_GAW185
GAW Report No. 185
Guidelines for the Measurement of Methane and Nitrous Oxide and their Quality Assurance
- OnLine resource
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Databases CH4-Mt.Cimone Station-The World Data Centre for Greenhouse Gases (WDCGG)
Databases CH4-Mt.Cimone Station-The World Data Centre for Greenhouse Gases (WDCGG)
- OnLine resource
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cmn644n00.isac.as.cn.ch4.nl.hr2010.dat.txt
CH4 data
- Hierarchy level
- Dataset
- Statement
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TITLE: CH4 hourly mean data
FILE NAME: cmn644n00.isac.as.cn.ch4.nl.hr2010.dat
DATA FORMAT: Version 1.0
STATION NAME: Monte Cimone
STATION CATEGORY: Global
OBSERVATION CATEGORY: Air sampling observation at a stationary platform
COUNTRY/TERRITORY: Italy
CONTRIBUTOR: ISAC
LATITUDE: 44.18
LONGITUDE: 10.7
ALTITUDE: 2165
NUMBER OF SAMPLING HEIGHTS: 1
SAMPLING HEIGHTS: 7
CONTACT POINT: jgor.arduini@uniurb.it
PARAMETER: CH4
COVERING PERIOD: 2010-01-01 2010-12-31
TIME INTERVAL: hourly
MEASUREMENT UNIT: ppbv
MEASUREMENT METHOD: Gas Chromatography (FID)
SAMPLING TYPE: continuous
TIME ZONE: Local time UTC+1
MEASUREMENT SCALE: indirect link to NOAA 2004 scale
gmd:MD_Metadata
- File identifier
- b3af743d-c6cc-44c4-9206-ae93d83be70d XML
- Metadata language
- eng
- Character set
- UTF8
- Parent identifier
- 6c4be9d4-8ecd-4921-9071-753bb9c5dcc6
- Hierarchy level
- Series
- Date stamp
- 2011-11-07T15:10:22
- Metadata standard name
- ISO 19115:2003/19139
- Metadata standard version
- 1.0
Point of contact
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