Atlantic Meridional Transect (AMT)
CTD and underway data (AMT)
The Conductivity, Temperature, Depth (CTD) profiles, and continuous meteorological and oceanographic core measurements (underway data) from all cruises for the Atlantic Meridional Transect (AMT) programme are available online in a fixed ASCII (CSV) format as specified below.
The data are freely available to AMT participants and to the wider scientific community for the purposes of research.
The files available online reflect the current status of data processing at BODC. The data and associated documentation (providing information about sensors, quality control, calibrations and processing status) can be downloaded directly from our web site.
Each time modifications are made by BODC, these files are updated and changes are noted in the documentation and the 'date modified' will be changed.
The AMT community will be notified by email but external users will need to periodically check the tables below to ensure that they have the most up-to-date version of the data.
Proceed to download AMT CTD and underway data.
Data specification and status
CTD data
Specification
- One ASCII file per cast
- All parameters included (parameter codes defined in a separate file)
- Quality-control flags applied where data are null, suspect or interpolated
- Data converted to standard BODC units
- Data calibrated against sample data where applicable
- Data listed in 1 decibar bins
Status
Note — Hover over the additional parameters for an explanation of their meaning.
| Cruise | Date | Casts | Additional parameters |
View document |
Date modified |
|---|---|---|---|---|---|
| AMT17 | Oct-Nov 2005 | 60 | 
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| AMT19 | Oct-Nov 2009 | 120 |
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| AMT17 | Oct-Nov 2005 | 60 |
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| AMT19 | Oct-Nov 2009 | 120 |
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Underway data
Specification
- Data merged to a common sampling interval of 60 seconds
- Quality-control flags applied where data are null or suspect
- Data converted to standard BODC units
- Data calibrated against sample data where applicable
Status
| Cruise | Date/Time | Comments | View document |
Date modified |
|---|---|---|---|---|
| AMT1 | 19/09/1995 14:29 - 25/10/1995 10:06 | |
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| AMT2 | 22/04/1996 12:10 - 22/05/1996 07:17 | |
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| AMT3 | 21/09/1996 12:16 - 25/10/1996 13:20 | |
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| AMT4 | 21/04/1997 12:07 - 27/05/1997 00:05 | |
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| AMT5 | 14/09/1997 04:00 - 17/10/1997 13:13 | |
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| AMT6B | 05/04/1998 18:59 - 03/05/1998 14:09 | |
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| AMT6 | 15/05/1998 12:00 - 16/06/1998 08:41 | Data warnings | |
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| AMT7 | 13/09/1998 16:00 - 25/10/1998 19:55 | |
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| AMT8 | 23/04/1999 18:51 - 07/06/1999 08:02 | |
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| AMT9 | 15/09/1999 08:06 - 12/10/1999 14:46 | |
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| AMT10 | 11/04/2000 12:01 - 07/05/2000 14:57 | |
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| AMT11 | 13/09/2000 18:09 - 11/10/2000 10:50 | |
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| AMT12 | 13/05/2003 12:24 - 15/06/2003 10:54 | |
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| AMT13 | 11/09/2003 07:07 - 13/10/2003 18:10 | |
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| AMT14 | 28/04/2004 00:00 - 31/05/2004 00:00 | |
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| AMT15 | 17/09/2004 13:08 - 29/10/2004 17:52 | |
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| AMT16 | 20/05/2005 12:00 - 28/06/2005 13:00 | |
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| AMT17 | 15/10/2005 08:00 - 26/11/2005 06:00 | |
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| AMT18 | 03/10/2008 00:00 - 09/11/2008 15:30 | |
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| AMT19 | 13/10/2009 12:12 - 30/11/2009 11:07 | |
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| AMT20 | 12/10/2010 08:40 - 22/11/2010 21:10 | |
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| AMT21 | 28/09/2011 08:07 - 11/11/2011 17:59 | |
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| AMT22 | 10/10/2012 08:00 - 20/11/2012 20:01 | |
Related BODC pages
| Atlantic Meridional transect (AMT) | CTD profiles | |
| Atlantic Meridional transect — Other data sets | BODC parameter dictionary | |
| Data processing steps |
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