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Station Characteristics 2011-05-31/66
GAW ID CPT Cape Point (South Africa)
WMO ID 68916-0 Global station in WMO RA I - Africa
station status established 1978 / full operation 34.35348°S 18.48968°E (230 m a.s.l.)
time zone UTC+2 http://www.weathersa.co.za
climate zone Csb (Warm temperate climate with dry and warm summer)  
other affiliations NOAA-ESRL/AERO(CPT)
description The Cape Point station is located in a nature reserve at the southern end of the Cape Peninsula, South Africa, (coordinates: 34°21' S, 18°29' E). The monitoring station is exposed to the sea on top of a cliff 230 m a.s.l., about 60 km south from the city of Cape Town. Since the dominant wind direction is SE - S - SW, the station is subjected to maritime air from the South Atlantic most of the time. The Cape Peninsula has a Mediterranean-type climate where the summers are generally dry and windy, whilst the winters are cold and wet. In 1995, the station moved to a newly built one story measurement location. The new location provides excellent space for present and future measurement activities and underlines the importance given to the site by the Government. It is situated adjoining the old station beneath the 30 m sampling tower and is built partially into the rock. The air inlet and several pieces of meteorological equipment are mounted on a platform at the top of the flat roof.
Cape Point, which is also a popular tourist destination, can easily be reached by road from Cape Town, which is situated 60 km to the north. From the tourist parking area an electrical funicular railway leads up the hill. Tourists are only permitted to visit Cape Point during daylight hours.
Picture of Cape Point facility

Measurement Program
type data center parameter method contributor data available details
Ozone WDCGG Surface ozone UV photometry [general] SAWS 1997-01-01 ~ 2014-01-01
Surface ozone Passive Samplers [general] SAWS
Aerosol Carbonaceous/organic material (fine) Optical particle counter (OPC) SAWS
Light absorption coefficient, total aerosol Light absorption photometry SAWS
Light backscattering coefficient, total aerosol Nephelometry, integrating SAWS
Light scattering coefficient, total aerosol Nephelometry, integrating SAWS
Multiwavelength optical depth, total aerosol Sunphotometry/Filter Radiometry SAWS
WDCA Number concentration Condensation particle counter (CPC) 2005-01-01 ~ 2005-11-01
WDCA Number concentration Condensation particle counter (CPC) 2005-11-01 ~ 2013-01-01
Number concentration Condensation particle counter (CPC) SAWS
Greenhouse Gas WDCGG CH4 ## Flask sampling NOAA-ESRL-GMD 2010-02-01 ~ 2013-12-24
WDCGG CH4 GC-FID SAWS 1983-01-01 ~ 2014-01-01
WDCGG CO2 ## Flask sampling NOAA-ESRL-GMD 2010-02-01 ~ 2012-12-20
WDCGG CO2 Non-dispersive IR (NDIR) SAWS 1993-01-01 ~ 2014-01-01
WDCGG N2O GC-ECD SAWS 1994-01-01 ~ 2007-01-01
N2O GC-ECD SAWS
Reactive Gas WDCGG CO Gas Chromatography (GC) [general] SAWS 1995-01-01 ~ 2014-01-01
NO2 Passive Samplers [general] SAWS
SO2 Passive Samplers [general] SAWS
Radiation Diffuse solar radiation Pyranometer (global solar, broadband) SAWS
Global solar radiation Pyranometer (global solar, broadband) SAWS
UV Broadband Pyranometer (global solar, broadband) SAWS
Radio Nuclide Beryllium [Be-7] Filter sampling + gamma spectrometry SAWS
Krypton [Kr-85] Adsorption - scintillation counting SAWS
Lead [Pb-210] Filter sampling + gamma spectrometry SAWS
Radon [Rn-222] Alpha counting SAWS
Meteo Pressure Barometer/Pressure sensor SAWS
Temperature ## unknown/unspecified SAWS
Trajectories ## Numerical Model NOAA-ESRL-GMD
Wind direction Wind vane SAWS
Wind direction Anemometer [general] SAWS
Wind speed Anemometer [general] SAWS
Wind speed Anemometer [general] SAWS

Contact Person(s)
name Mr. Ernst-Günther Brunke
address South African Weather Service
Jan Cilliers, SAWS c/o CSIR PO Box 320
Stellenbosch, Cape Province 7599
South Africa
2012-01-12/2141914043
phone +27-21-888-2636
+27828350924
fax +27-21-888-2688
mailto ernst.brunke@weathersa.co.za
url http://www.weathersa.co.za
GAW function Member of SAG Greenhouse Gases
station function Primary station contact, Measurement leader [Aerosol: Light absorption coefficient, total aerosol, Aerosol: Light backscattering coefficient, total aerosol, Aerosol: Light scattering coefficient, total aerosol, Aerosol: Multiwavelength optical depth, total aerosol, Aerosol: Number concentration, Greenhouse Gas: CH4, Greenhouse Gas: CO2, Greenhouse Gas: N2O, Greenhouse Gas: N2O, Ozone: Surface ozone, Ozone: Surface ozone, Radiation: Diffuse solar radiation, Radiation: Global solar radiation, Radiation: UV Broadband, Radio Nuclide: Radon [Rn-222], Reactive Gas: CO, Reactive Gas: NO2, Reactive Gas: SO2]

name Mr. Gerrie J. R. Coetzee
address South African Weather Service
Private Bag X097
Pretoria, Gauteng 0001
South Africa
2011-05-31/66
phone +27-12-367-6048
fax +27-12-367-6175
mailto gerrie.coetzee@weathersa.co.za
url http://www.weathersa.co.za
GAW function
station function

name Mr. Casper Labuschagne
address South African Weather Service
Jan Cilliers, SAWS c/o CSIR PO Box 320
Stellenbosch, Cape Province 7599
South Africa
2011-05-31/66
phone +27-21-888-2549
fax +27-21-888-2688
mailto casper.labuschagne@weathersa.co.za
url www.weathersa.co.za
GAW function
station function

name Mr. Bhawoodien Parker
address South African Weather Service
Jan Cilliers Street
Cape Town, Stellenbosch 7599
South Africa
2011-05-31/66
phone +27-21-888-2636
fax +27-21-888-2688
mailto bhawoodien.parker@weathersa.co.za
url http://www.weathersa.co.za
GAW function
station function Measurement leader [Meteo: Pressure, Meteo: Temperature, Meteo: Wind direction, Meteo: Wind direction, Meteo: Wind speed, Meteo: Wind speed]

name Dr. Jean Sciare
address Laboratoire des Sciences du Climat et de l'Environnement (LSCE)
Bat 702, Pce 9 CEA Orme des Merisiers
F-91191 Gif/Yvette Cedex
France
2013-05-02/-147256513
phone + 33 1 69 08 24 01 / 81 50
fax + 33 1 69 08 77 16
mailto jean.sciare@lsce.ipsl.fr
url http://www.lsce.ipsl.fr
GAW function
station function Measurement leader [Aerosol: Carbonaceous/organic material (fine)]

name Dr. Christoph Wehrli
address PMOD/WRC-WORCC
Dorfstrasse 33
CH-7260 Davos
Switzerland
2011-02-10/0
phone +41 (081) 417 51 37
fax +41 (081) 417 51 00
mailto christoph.wehrli@pmodwrc.ch
url
GAW function Member of SAG Aerosol, World Calibration Centre
station function


References
Slemr, F., et al. (2013), $^{222, Atmospheric Chemistry and Physics Discussions, 13, 8213--8231, doi:10.5194/acpd-13-8213-2013, http://www.atmos-chem-phys-discuss.net/13/8213/2013/
Zellweger, Christoph, et al. (2011), System and Performance Audit of Surface Ozone, Methane, Carbon Dioxide and Carbon Monoxide at the Global GAW Cape Point, South Africa, March 2011, WCC-Empa Report 11/1, http://gaw.empa.ch/audits/CPT_2011.pdf
Brunke, E.-G., et al. (2010), Gaseous elemental mercury depletion events observed at Cape Point during 2007–2008, Atmospheric Chemistry and Physics, 10, 1121--1131, doi:10.5194/acp-10-1121-2010, http://www.atmos-chem-phys.net/10/1121/2010/
Zellweger, C., et al. (2006), System and Performance Audit for Surface Ozone, Carbon Monoxide and Methane at the Global GAW Station Cape Point, South Africa, WCC-Empa Report 06/5., gaw.empa.ch/audits/CPT_2006.pdf
Baker, PGL, et al. (2002), Atmospheric mercury measurements at Cape Point, South Africa, Atmospheric Environment, 36, 2459--2465
Zellweger, C., et al. (2002), System and Performance Audit for Surface Ozone, Carbon Monoxide and Methane at the Global GAW Station Cape Point, South Africa, WCC-Empa Report 02/2., gaw.empa.ch/audits/CPT_2002.pdf
Brunke, E.G., et al. (2001), Gaseous Mercury Emissions from a Fire in the Cape Peninsula, South Africa, during January 2000, GEOPHYSICAL RESEARCH LETTERS, 28, 1483--1486
Herzog, A., et al. (1998), System and Performance Audit for Surface Ozone and Carbon Monoxide, Global GAW Station Cape Point, South Africa, WCC-Empa Report 98/7, gaw.empa.ch/audits/CPT_1998.pdf
Scheel, HE, et al. (1998), In situ CO concentrations at the sites Zugspitze (47 N, 11 E) and Cape Point (34 S, 18 E) in April and October 1994, J. Geophys. Res, 103, 19295--19304
Herzog, A., et al. (1997), System and Performance Audit for Surface Ozone, Global GAW Station Cape Point, South Africa, WCC-Empa Report, gaw.empa.ch/audits/CPT_1997.pdf
Largier, J.L. (1994), The internal tide over the shelf inshore of Cape Point Valley, South Africa, J. Geophys. Res, 99, 023--10
Brunke, E.G., et al. (1990), Trends of tropospheric CO, N sub (2) O and CH sub (4) as observed at Cape Point, South Africa., ATMOS. ENVIRON., PART A., 24, 585--595
Scheel, HE, et al. (1990), Trace gas measurements at the monitoring station cape point, South Africa, between 1978 and 1988, Journal of Atmospheric Chemistry, 11, 197--210
 
 
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