Africa and Western Indian Ocean Sea Level Data

The Intergovernmental Oceanographic Commission (IOC) is involved in GLOSS and in other sea level programmes related to Africa and the Western Indian Ocean, all of which will ultimately benefit GLOSS overall. This web page provides access to delayed-mode (DM) quality-controlled (QC'd) sea level data from a number of stations associated with these programmes in this region, especially in order to publicise the data availability. Ultimately, these data will be added to the overall GLOSS DM data set linked to below.

Aside from GLOSS itself, the two main related programmes are:

(1) The Ocean Data and Information Network for Africa (ODINAFRICA) , which brings together marine institutions from twenty five African Member States of the Intergovernmental Oceanographic Commission of UNESCO (Algeria, Angola, Benin, Cameroon, Comoros, Congo, Cote d'Ivoire, Egypt, Gabon, Ghana, Guinea, Kenya, Madagascar, Mauritania, Mauritius, Morocco, Mozambique, Namibia, Nigeria, Senegal, Seychelles, South Africa, United Republic of Tanzania, Togo, and Tunisia).

As part of the ODINAFRICA-III programme, 15 tide stations have so far been installed or upgraded.

(2) The Indian Ocean Tsunami Warning System, upgrades to which will also be useful for GLOSS purposes.

The map below indicates which stations have, or will soon have, DM data accessible from this web page. Links to other sources of data from the region are given below.

Africa and Western Indian Ocean map

Delayed-mode data

1 minute data 1min - Raw 1 minute data

1 minute data 15min - Quality-controlled 15 minute data

The format of the data files is described in the fileformat.pdf - Downloaded pdf describing file format

GLOSS No. Site Name Position Data Document

3

Aden (Yemen)

12° 47' 18'' N,  44° 58' 27'' E

09/10/2007 – 31/12/2007

Aden site document (489 kB)
Zipped raw 1 minute data from Aden, 2007 1min (570 kB) Zipped quality controlled 15 minute data from Aden, 2007 15min (38 kB)
01/01/2008 - 31/12/2008
Zipped raw 1 minute data from Aden, 2008 1min (2446 kB) Zipped quality controlled 15 minute data from Aden, 2008 15min (156 kB)
01/01/2009 - 31/12/2009
Zipped raw 1 minute data from Aden, 2009 1min (2341 kB) Zipped quality controlled 15 minute data from Aden, 2009 15min (152 kB)
01/01/2010 - 30/04/2010
Zipped raw 1 minute data from Aden, 2010 1min (762 kB) Zipped quality controlled 15 minute data from Aden, 2010 15min (53 kB)

 

Alexandria (Egypt)

31° 12.7' N,  29° 55.4' E

 04/11/2009 - 31/12/2009

Alexandria site document (488 kB)
Zipped raw 1 minute data from Alexandria, 2009 1min (334 kB) Zipped quality controlled 15 minute data from Alexandria, 2009 15min (22 kB)
01/01/2010 - 30/04/2010
Zipped raw 1 minute data from Alexandria, 2010 1min (726 kB) Zipped quality controlled 15 minute data from Alexandria, 2010 15min (48 kB)

 

Chabahar (Iran)

25° 17' 45'' N, 60° 36' 11'' E

31/10/2007 – 31/12/2007

Chabahar site document (489 kB)

Zipped raw 1 minute data from Chabahar, 2007 1min (421 kB) Zipped quality controlled 15 minute data from Chabahar, 2007 15min (28 kB)
01/01/2008 - 31/12/2008
Zipped raw 1 minute data from Chabahar, 2008 1min (2536 kB) Zipped quality controlled 15 minute data from Chabahar, 2008 15min (164 kB)
01/01/2009 - 31/12/2009
Zipped raw 1 minute data from Chabahar, 2009 1min (2156 kB) Zipped quality controlled 15 minute data from Chabahar, 2009 15min (123 kB)
01/01/2010 - 30/04/2010
Zipped raw 1 minute data from Chabahar, 2010 1min (812 kB) Zipped quality controlled 15 minute data from Chabahar, 2010 15min (53 kB)

2

Djibouti (Djibouti)

11° 36' 30'' N, 43° 08' 22'' E

20/02/2007 – 31/12/2007

Djibouti site document (489 kB)

Zipped raw 1 minute data from Djibouti, 2007 1min (2104 kB) Zipped quality controlled 15 minute data from Djibouti, 2007 15min (137 kB)
01/01/2008 - 31/12/2008
Zipped raw 1 minute data from Djibouti, 2008 1min (2446 kB) Zipped quality controlled 15 minute data from Djibouti, 2008 15min (159 kB)
01/01/2009 - 31/12/2009
Zipped raw 1 minute data from Djibouti, 2009 1min (2359 kB) Zipped quality controlled 15 minute data from Djibouti, 2009 15min (154 kB)
01/01/2010 - 30/04/2010
Zipped raw 1 minute data from Djibouti, 2010 1min (791 kB) Zipped quality controlled 15 minute data from Djibouti, 2010 15min (53 kB)

10

Inhambane (Mozambique)

23° 52.1' S, 35° 22.6' E

07/05/2007 – 31/12/2007

Inhambane site document (490 kB)
Zipped raw 1 minute data from Inhambane, 2007 1min (634 kB) Zipped quality controlled 15 minute data from Inhambane, 2007 15min (34 kB)
01/01/2008 - 31/12/2008
Zipped raw 1 minute data from Inhambane, 2008 1min (53 kB) Zipped quality controlled 15 minute data from Inhambane, 2008 15min (1 kB)
01/01/2009 - 31/12/2009
Zipped raw 1 minute data from Inhambane, 2009 1min (348 kB) Zipped quality controlled 15 minute data from Inhambane, 2009 15min (16 kB)
01/01/2010 - 20/05/2010
Zipped raw 1 minute data from Inhambane, 2010 1min (115 kB) Zipped quality controlled 15 minute data from Inhambane, 2010 15min (6 kB)

30

Karachi (Pakistan)

24° 51' 0'' N, 67°  1' 48'' E

31/01/2007 – 31/12/2007

Karachi site document (489 kB)

Zipped raw 1 minute data from Karachi, 2007 1min (2299 kB) Zipped quality controlled 15 minute data from Karachi, 2007 15min (149 kB)
01/01/2008 - 31/12/2008
Zipped raw 1 minute data from Karachi, 2008 1min (2396 kB) Zipped quality controlled 15 minute data from Karachi, 2008 15min (155 kB)
01/01/2009 - 31/12/2009
Zipped raw 1 minute data from Karachi, 2009 1min (2560 kB) Zipped quality controlled 15 minute data from Karachi, 2009 15min (165 kB)
01/01/2010 - 30/04/2010
Zipped raw 1 minute data from Karachi, 2010 1min (820 kB) Zipped quality controlled 15 minute data from Karachi, 2010 15min (54 kB)

 

Nouakchott (Mauritania)

17° 59' 22.4'' N, 16° 02' 13.05'' W

05/01/2007 – 31/12/2007

Nouakchott site document (489 kB)
Zipped raw 1 minute data from Nouakchott, 2007 1min (2142 kB) Zipped quality controlled 15 minute data from Nouakchott, 2007 15min (129 kB)
01/01/2008 - 31/12/2008
Zipped raw 1 minute data from Nouakchott, 2008 1min (1663 kB) Zipped quality controlled 15 minute data from Nouakchott, 2008 15min (95 kB)
01/01/2009 - 31/12/2009
Zipped raw 1 minute data from Nouakchott, 2009 1min (1921 kB) Zipped quality controlled 15 minute data from Nouakchott, 2009 15min (120 kB)
01/01/2010 - 31/03/2010
Zipped raw 1 minute data from Nouakchott, 2010 1min (641 kB) Zipped quality controlled 15 minute data from Nouakchott, 2010 15min (39 kB)

11

Pemba (Mozambique)

12° 57.6' S, 40° 29.2' E

19/04/2007 – 31/12/2007

Pemba site document (490 kB)
Zipped raw 1 minute data from Pemba, 2007 1min (1811 kB) Zipped quality controlled 15 minute data from Pemba, 2007 15min (118 kB)
01/01/2008 - 31/12/2008
Zipped raw 1 minute data from Pemba, 2008 1min (2488 kB) Zipped quality controlled 15 minute data from Pemba, 2008 15min (161 kB)
01/01/2009 - 31/12/2009
Zipped raw 1 minute data from Pemba, 2009 1min (1407 kB) Zipped quality controlled 15 minute data from Pemba, 2009 15min (84 kB)
01/01/2010 - 30/04/2010
Zipped raw 1 minute data from Pemba, 2010 1min (30 kB) Zipped quality controlled 15 minute data from Pemba, 2010 15min (1 kB)

261

Pointe Noire (Republic of Congo)

4° 47' S, 11° 50' E

10/09/2008 - 31/12/2008

Pointe Noire site document (489 kB)
Zipped raw 1 minute data from Pointe Noire, 2008 1min (519 kB) Zipped quality controlled 15 minute data from Pointe Noire, 2008 15min (35 kB)
01/01/2009 - 31/12/2009
Zipped raw 1 minute data from Pointe Noire, 2009 1min (1910 kB) Zipped quality controlled 15 minute data from Pointe Noire, 2009 15min (125 kB)
01/01/2010 - 30/04/2010
Zipped raw 1 minute data from Pointe Noire, 2010 1min (748 kB) Zipped quality controlled 15 minute data from Pointe Noire, 2010 15min (50 kB)

 

Port Sonara (Cameroon)

4° 00' 15" N, 9° 07' 37" E

20/06/2008 - 31/12/2008

Port Sonara site document (489 kB)
Zipped raw 1 minute data from Port Sonara, 2008 1min (946 kB) Zipped quality controlled 15 minute data from Port Sonara, 2008 15min (48 kB)
01/01/2009 - 31/12/2009
Zipped raw 1 minute data from Port Sonara, 2009 1min (2351 kB) Zipped quality controlled 15 minute data from Port Sonara, 2009 15min (151 kB)
01/01/2010 - 30/04/2010
Zipped raw 1 minute data from Port Sonara, 2010 1min (802 kB) Zipped quality controlled 15 minute data from Port Sonara, 2010 15min (52 kB)

 

Takoradi (Ghana)

4° 53' 04.4'' N, 1° 44' 42.1'' W

04/01/2007 – 31/12/2007

Takoradi site document (491 kB)

Zipped raw 1 minute data from Takoradi, 2007 1min (1513 kB) Zipped quality controlled 15 minute data from Takoradi, 2007 15min (95 kB)
01/01/2008 - 31/12/2008
Zipped raw 1 minute data from Takoradi, 2008 1min (2340 kB) Zipped quality controlled 15 minute data from Takoradi, 2008 15min (147 kB)
01/01/2009 - 31/12/2009
Zipped raw 1 minute data from Takoradi, 2009 1min (1202 kB) Zipped quality controlled 15 minute data from Takoradi, 2009 15min (49 kB)
01/01/2010 - 30/04/2010
Zipped raw 1 minute data from Takoradi, 2010 1min (444 kB) Zipped quality controlled 15 minute data from Takoradi, 2010 15min (29 kB)

A Fortran conversion routine is provided to convert the data on this web page into 10 column TASK-2000 format.

Links

South African Hydrographic Office (SANHO) Tide Information

ODINAFRICA/GLOSS Dipping Calibration Sheets

Raw real-time data for ODINAFRICA and Indian Ocean gauges

ROSAME Indian Ocean tide gauge network

PSMSL Individual station data (including African and Indian Ocean sites)

BODC high frequency delayed-mode international sea level data for the GLOSS programme

UHSLC fast delivery international sea level data for the GLOSS programme

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