Observation Sites
Yellow markers indicate discontinued sites
Mahe Island, Seychelles [SEY]
Location
- Country: Seychelles
- Latitude: 4.6824° South
- Longitude: 55.5325° East
- Elevation: 2.00 masl
- Time Zone: Local Standard Time + -4.0 hour(s) = UTC
Data
Cooperating Agencies
Seychelles Bureau of StandardsSampling site 1 (southeast of Mahe, refer to map)The site is situated at the southern part of the runway of the international airport. It is just approx. two meters from the sea. It is a flat and forms part of the drudged land on which the airport has been constructed. There is no vegetation.Sampling site 2 (northwest of Mahe, refer to map)The site is situated on a built swimming pool of the Sunset Hotel. It isabove the sea on a rocky environment.
GML Projects at Mahe Island
| Parameter | Formula | First Sample Date | Status |
|---|---|---|---|
| Carbon Dioxide | CO2 | 1980-01-15 | Ongoing |
| Methane | CH4 | 1983-05-12 | Ongoing |
| Carbon Monoxide | CO | 1990-11-16 | Ongoing |
| Molecular Hydrogen | H2 | 1990-11-16 | Ongoing |
| Nitrous Oxide | N2O | 1997-06-13 | Ongoing |
| Sulfur Hexafluoride | SF6 | 1997-06-13 | Ongoing |
| Sulfur Hexafluoride | SF6 | 2023-05-19 | Ongoing |
| Carbon-13/Carbon-12 in Carbon Dioxide | d13C (CO2) | 1990-10-09 | Ongoing |
| Oxygen-18/Oxygen-16 in Carbon Dioxide | d18O (CO2) | 1990-10-09 | Ongoing |
| HFC-134a | CH2FCF3 | 2023-05-19 | Ongoing |
| HCFC-22 | CHF2Cl | 2023-05-19 | Ongoing |
| CFC-12 | CCl2F2 | 2023-05-19 | Ongoing |
| Methyl Chloride | CH3Cl | 2005-02-11 | Terminated - 2018-06-08 |
| Methyl Chloride | CH3Cl | 2023-05-19 | Ongoing |
| CFC-114 | CFC-114 | 2023-05-19 | Ongoing |
| HCFC-142b | CH3CF2Cl | 2023-05-19 | Ongoing |
| Halon-1211 | CBrClF2 | 2023-05-19 | Ongoing |
| Methyl Bromide | CH3Br | 2023-05-19 | Ongoing |
| CFC-11 | CCl3F (ion 103) | 2023-05-19 | Ongoing |
| HCFC-141b | CH3CCl2F | 2023-05-19 | Ongoing |
| Methyl Iodide | CH3I | 2023-05-19 | Ongoing |
| CFC-113 | CCl2FCClF2 | 2023-05-19 | Ongoing |
| Dichloromethane | CH2Cl2 | 2023-05-19 | Ongoing |
| Chloroform | CHCl3 | 2023-05-19 | Ongoing |
| Methyl Chloroform | CH3CCl3 | 2023-05-19 | Ongoing |
| Carbon Tetrachloride | CCl4 | 2023-05-19 | Ongoing |
| Dibromomethane | CH2Br2 | 2023-05-19 | Ongoing |
| Perchloroethylene (PCE) | C2Cl4 | 2023-05-19 | Ongoing |
| Bromoform | CHBr3 | 2023-05-19 | Ongoing |
| Benzene | C6H6 | 2023-05-19 | Ongoing |
| Benzene | C6H6 | 2006-10-11 | Terminated - 2018-06-08 |
| Carbonyl Sulfide | COS | 2023-05-19 | Ongoing |
| HCFC-21 | CHCl2F | 2023-05-19 | Ongoing |
| HFC-152a | CH3CHF2 | 2023-05-19 | Ongoing |
| HCFC-124 | CHClFCF3 | 2023-05-19 | Ongoing |
| Toluene | C7H8 | 2006-10-11 | Terminated - 2018-06-08 |
| Carbon Disulfide | CS2 | 2023-05-19 | Ongoing |
| Ethane | C2H6 | 2023-05-19 | Ongoing |
| Ethane | C2H6 | 2005-02-11 | Terminated - 2018-06-08 |
| Ethene | C2H4 | 2005-02-11 | Terminated - 2018-06-08 |
| Ethene | C2H4 | 2023-05-19 | Ongoing |
| Propane | C3H8 | 2023-05-19 | Ongoing |
| Propane | C3H8 | 2005-02-11 | Terminated - 2018-06-08 |
| Propene | C3H6 | 2023-05-19 | Ongoing |
| Propene | C3H6 | 2005-02-11 | Terminated - 2018-06-08 |
| i-Butane | i-C4H10 | 2023-05-19 | Ongoing |
| i-Butane | i-C4H10 | 2005-02-11 | Terminated - 2018-06-08 |
| n-Butane | n-C4H10 | 2005-02-11 | Terminated - 2018-06-08 |
| n-Butane | n-C4H10 | 2023-05-19 | Ongoing |
| i-Pentane | i-C5H12 | 2005-02-11 | Terminated - 2018-06-08 |
| i-Pentane | i-C5H12 | 2023-05-19 | Ongoing |
| n-Pentane | n-C5H12 | 2005-02-11 | Terminated - 2018-06-08 |
| n-Pentane | n-C5H12 | 2023-05-19 | Ongoing |
| n-Hexane | n-C6H14 | 2005-02-11 | Terminated - 2018-06-08 |
| n-Hexane | n-C6H14 | 2023-05-19 | Ongoing |
| isoprene | C5H8 | 2006-10-11 | Terminated - 2018-06-08 |
| Halon-1301 | CF3Br | 2023-05-19 | Ongoing |
| Halon-2402 | CBrF2CBrF2 | 2023-05-19 | Ongoing |
| HFC-143a | CH3CF3 | 2023-05-19 | Ongoing |
| HFC-227ea | CF3CHFCF3 | 2023-05-19 | Ongoing |
| HFC-365mfc | CH3CF2CH2CF3 | 2023-05-19 | Ongoing |
| CFC-115 | CClF2CF3 | 2023-05-19 | Ongoing |
| HFC-125 | CHF2CF3 | 2023-05-19 | Ongoing |
| CFC-13 | CClF3 | 2023-05-19 | Ongoing |
| HFC-23 | CHF3 | 2023-05-19 | Ongoing |
| PFC-218 | C3F8 | 2023-05-19 | Ongoing |
| Acetylene | C2H2 | 2023-05-19 | Ongoing |
| Acetylene | C2H2 | 2007-11-02 | Terminated - 2018-06-08 |
| HFC-32 | CH2F2 | 2023-05-19 | Ongoing |
| HFC-134 | CHF2CHF2 | 2023-05-19 | Ongoing |
| Halon-1011 | CH2BrCl | 2023-05-19 | Ongoing |
| PFC-14 | CF4 | 2023-05-19 | Ongoing |
| PFC-116 | CF3CF3 | 2023-05-19 | Ongoing |
| Nitrogen Trifluoride | NF3 | 2023-05-19 | Ongoing |
| Sulfuryl Fluoride | SO2F2 | 2023-05-19 | Ongoing |
| HFC-236fa | CF3CH2CF3 | 2023-05-19 | Ongoing |
| HCFC-133a | CH2ClCF3 | 2023-05-19 | Ongoing |
| CFC-112 | CCl3CClF2 | 2023-05-19 | Ongoing |
| Trichloroethylene (TCE) | C2HCl3 | 2023-05-19 | Ongoing |
| HFO-1234yf | CH2=CFCF3 | 2023-05-19 | Ongoing |
| HFO-1234zeE | CHF=CHCF3 | 2023-05-19 | Ongoing |
| Ethylene Dichloride (1,2 DCE) | CH2ClCH2Cl | 2023-05-19 | Ongoing |
| HCFC-123 | CHCl2CF3 | 2023-05-19 | Ongoing |
| Morpholine | C5F11NO | 2023-05-19 | Ongoing |
| Perfluorotriethylamine (PFTEA) | (C2F5)3N | 2023-05-19 | Ongoing |
| Perfluorotripropylamine (PFTPA) | (C3F7)3N | 2023-05-19 | Ongoing |
| HFC-245fa | 2023-05-19 | Ongoing | |
| CFC-113a | CCl3CF3 | 2023-05-19 | Ongoing |
| PFC-318 | c-C4F8 | 2024-06-07 | Ongoing |