geomon

Global Earth Observation and Monitoring
of the atmosphere


Station Report Card for Monte Velho (PT04)

Site Identity

Name:Monte Velho
GEOmon ID:PT04
EMEP ID:PT04
GAW ID:MVH
Longitude:-8.800 (°E)
Latitude:38.083 (°N)
Altitude: 43 (m) above sea level
Fig.: Location of Site

Measurements

The GEOmon activity 2.1 focuses on surface observations of ozone, nitrogen dioxide and carbon monoxide. At most stations presented here, measurements of several other trace gases and aerosol parameters are also available but are not listed here. Refer to GAWSIS for more information on other parameters.

The complete set of preliminary harmonized data can be downloaded here: (hourly, daily data, data description).
Data of the site Monte Velho can be downloaded here: (hourly, daily data, data description)
Ozone Measurements
Height of O3 inlet:4 (m) Length of O3 sample line:4 (m)
O3 sampling method:Continuous O3 analysis method:UV-Absorption
O3 sampling interval:Not available
O3 calibration with NIST standard:1 year(s) Location of used NIST standard:APA
First measurement in dataset:1990-01-01 00:00 Last measurement in dataset:2005-12-31 00:00
Data coverage: 84.5 (%) Data source/provider: EMEP
(status: 2008-05-09)
Comments:APA = Portuguese Agency of Environment

Nitrogen Dioxide Measurements
Height of NO2 inlet:4 (m) Length of NO2 sampling line:4 (m)
NO2 sampling method:Continuous NO2 analysis method:Chemiluminescence (CL)
NO2 sampling frequency:15 minute(s)
NO2 calibration with primary standard:certified gases (800 ppb)
First measurement in dataset:2000-01-01 00:00 Last measurement in dataset:2006-12-31 00:00
Data coverage: 81.0 (%) Data source/provider:other
Comments:None

Carbon Monoxide Measurements
Not available.

Fig.: Overview of available measurements (daily data)

Surroundings 10 km

Median altitude: 8 (m) a.s.l. Standard deviation of altitude: 43 (m)
Site Altitude: 43 (m) a.s.l. Terrain below site: 46.0 (%)
Total population: 14162 Standard deviation of population: 805
Mean population density: 42 (km-2) Standard deviation of population density: 48 (km-2)
Local population density: 87.2 (km-2)
Dominating Land Cover Types:
Water Bodies (natural & artificial) (20) 47.2 (%)
Tree Cover, broadleaved, deciduous, closed (2) 16.0 (%)
Tree Cover, needle-leaved, evergreen (4) 15.3 (%)
Shrub Cover, closed-open, evergreen (11) 9.6 (%)
 
Mean O3 deposition velocity: 0.41 (cm s-1) Standard deviation of O3 deposition velocity: 0.36 (cm s-1)
Fig.: Topography Fig.: Population
 
Fig.: Land Cover

Surroundings 50 km

Median altitude: 4 (m) a.s.l. Standard deviation of altitude: 61 (m)
Site Altitude: 43 (m) a.s.l. Terrain below site: 42.6 (%)
Total population:165678 Standard deviation of population: 1627
Mean population density: 20 (km-2) Standard deviation of population density: 97 (km-2)
Local population density: 87.2 (km-2)
Dominating Land Cover Types:
Water Bodies (natural & artificial) (20) 49.6 (%)
Cultivated and managed areas (16) 19.3 (%)
Tree Cover, broadleaved, deciduous, closed (2) 14.7 (%)
Tree Cover, mixed leaf type (6) 6.6 (%)
 
Mean O3 deposition velocity: 0.45 (cm s-1) Standard deviation of O3 deposition velocity: 0.41 (cm s-1)
Fig.: Topography Fig.: Population
 
Fig.: Land Cover

12 hour Catchment Area

Mean radius: 123 (km) Standard deviation radius: 30 (km)
Equivalent radius: 132 (km) Circularity: 1.06
Total area: 54465 (km2) Total residence time: 19.6 (%)
Maximal radius: 176 (km) Minimal radius: 82 (km)
Maximal radius direction:N Minimal radius direction:S
Average population density: 77 (km-2) Standard deviation of population density: 230 (km-2)
 
Dominating Land Cover Types:
Water Bodies (natural & artificial) (20) 39.0 (%)
Cultivated and managed areas (16) 25.8 (%)
Tree Cover, broadleaved, deciduous, closed (2) 14.6 (%)
Tree Cover, mixed leaf type (6) 7.0 (%)
 
Average O3 deposition velocity: 0.53 (cm s-1) Standard deviation of O3 deposition velocity: 0.32 (cm s-1)
Catchment area derived from:FLEXPART main
Fig.: Surface Footprint and Catchment Area , EuropeFig.: Surface Footprint Catchment Area , North Atlantic Region

24 hour Catchment Area

Mean radius: 253 (km) Standard deviation radius: 65 (km)
Equivalent radius: 267 (km) Circularity: 0.85
Total area:224252 (km2) Total residence time: 34.0 (%)
Maximal radius: 376 (km) Minimal radius: 182 (km)
Maximal radius direction:N Minimal radius direction:S
Average population density: 63 (km-2) Standard deviation of population density: 186 (km-2)
 
Dominating Land Cover Types:
Water Bodies (natural & artificial) (20) 43.2 (%)
Cultivated and managed areas (16) 26.6 (%)
Tree Cover, broadleaved, deciduous, closed (2) 11.0 (%)
Tree Cover, mixed leaf type (6) 6.0 (%)
 
Average O3 deposition velocity: 0.50 (cm s-1) Standard deviation of O3 deposition velocity: 0.35 (cm s-1)
Catchment area derived from:FLEXPART main
Fig.: Surface Footprint and Catchment Area , EuropeFig.: Surface Footprint Catchment Area , North Atlantic Region

48 hour Catchment Area

Mean radius: 515 (km) Standard deviation radius: 96 (km)
Equivalent radius: 532 (km) Circularity: 0.47
Total area:887895 (km2) Total residence time: 55.6 (%)
Maximal radius: 668 (km) Minimal radius: 363 (km)
Maximal radius direction:N Minimal radius direction:S
Average population density: 53 (km-2) Standard deviation of population density: 160 (km-2)
 
Dominating Land Cover Types:
Water Bodies (natural & artificial) (20) 48.9 (%)
Cultivated and managed areas (16) 25.3 (%)
Tree Cover, broadleaved, deciduous, closed (2) 8.1 (%)
Tree Cover, mixed leaf type (6) 5.3 (%)
 
Average O3 deposition velocity: 0.46 (cm s-1) Standard deviation of O3 deposition velocity: 0.37 (cm s-1)
Catchment area derived from:FLEXPART main
Fig.: Surface Footprint and Catchment Area , EuropeFig.: Surface Footprint Catchment Area , North Atlantic Region


Please contact Stephan Henne in case of any questions.