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 O_{3} inlet:  4 (m)   Length of O_{3} sample line:  4 (m) 
O_{3} sampling method:  Continuous   O_{3} analysis method:  UVAbsorption 
O_{3} sampling interval:  Not available 
O_{3} calibration with NIST standard:  1 year(s)   Location of used NIST standard:  APA 
First measurement in dataset:  19900101 00:00   Last measurement in dataset:  20051231 00:00 
Data coverage:  84.5 (%)   Data source/provider:  EMEP (status: 20080509) 
Comments:  APA = Portuguese Agency of Environment 
    
Nitrogen Dioxide Measurements 
Height of NO_{2} inlet:  4 (m)   Length of NO_{2} sampling line:  4 (m) 
NO_{2} sampling method:  Continuous   NO_{2} analysis method:  Chemiluminescence (CL) 
NO_{2} sampling frequency:  15 minute(s) 
NO_{2} calibration with primary standard:  certified gases (800 ppb) 
First measurement in dataset:  20000101 00:00   Last measurement in dataset:  20061231 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, needleleaved, evergreen (4)  15.3 (%) 
Shrub Cover, closedopen, evergreen (11)  9.6 (%) 

Mean O_{3} deposition velocity:  0.41 (cm s^{1})   Standard deviation of O_{3} 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 O_{3} deposition velocity:  0.45 (cm s^{1})   Standard deviation of O_{3} 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 (km^{2})   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 O_{3} deposition velocity:  0.53 (cm s^{1})   Standard deviation of O_{3} deposition velocity:  0.32 (cm s^{1}) 
Catchment area derived from:  FLEXPART main 
 
Fig.: Surface Footprint and Catchment Area , Europe  Fig.: 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 (km^{2})   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 O_{3} deposition velocity:  0.50 (cm s^{1})   Standard deviation of O_{3} deposition velocity:  0.35 (cm s^{1}) 
Catchment area derived from:  FLEXPART main 
 
Fig.: Surface Footprint and Catchment Area , Europe  Fig.: 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 (km^{2})   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 O_{3} deposition velocity:  0.46 (cm s^{1})   Standard deviation of O_{3} deposition velocity:  0.37 (cm s^{1}) 
Catchment area derived from:  FLEXPART main 
 
Fig.: Surface Footprint and Catchment Area , Europe  Fig.: Surface Footprint Catchment Area , North Atlantic Region 
Please contact Stephan Henne in case of any questions.