Project NTAS - Northwest Tropical Atlantic Station for air-sea flux measurement
| Data Links |
| NTAS-IX Deployed June 29, 2009, at 17:37 UTC Argos Text files: Daily transmission: Logger 3 Logger 6 Complete listing: ASIMet1 ASIMet2 Plots: plot 1 plot 2 |
| NTAS-VIII Deployed July 28, 2008, reccovered July 2009 Argos Text files: Complete listing: ASIMet1 ASIMet2 Matlab files: sys1 mat sys2 mat Plots: plot 1 plot 2 Iridium System description (PDF) Text file, ASIMet Logger 12: Plots: Met Plot 1 Met Plot 2 |
NTAS-VII April 19, 2007 to July 29, 2008 Argos Text files: ASIMet1 ASIMet2 Matlab files: sys1 mat sys2 mat Plots: plot 1 plot 2 Iridium System description (PDF) |
NTAS-VI February 25, 2006 to April 24, 2007 Text files: ASIMet1 ASIMet2 sys1 mat sys2 mat Plots: plot 1 plot 2 |
NTAS-V March 11, 2005 to February 28, 2006 Text files: ASIMet1 ASIMet2 Plots: plot 1 plot 2 |
NTAS-IV February 21, 2004 to March 15, 2005 Text files: ASIMet1 ASIMet2 Plots: plot 1 plot 2 |
NTAS-III Feb 15, 2003 to February 19, 2004 Text files: ASIMet1 ASIMet2 Plots: plot 1 plot 2 |
Real Time Data
Surface Data
Hourly meteorological data for the current deployment of the NTAS buoy are recieved via Service Argos four times daily. Data is displayed as time series and available for download as ASCII files.
NTAS-IX
The ninth NTAS buoy was launched June 29, 2009, at 17:37 UTC. In addition to an Iridium modem transmitting data from the System 1 logger, the mooring includes a subsurface telemetry engineering test system consisting of an inductive and an acoustic modem transmitting through a second, single Iridium modem. Links to near-real-time data and a description of the system are on the right-hand column of this page.
ASIMet plot 1
ASIMet plot 2
Subsurface Data
The NTAS 9 subsurface Iridium modem telemeters data streams from an inductive and an acoustic modem.
The inductive modem transmits data from an SBE-27p, 2 SBE-37s, 2 SBE-39s, and a Sontek Argonaut. Time is provided by the Seabird Inductive Modem (SIM) and represents the time of receipt of the last sample by the SIM. To adjust the time word in the Iridium data stream, we have subtracted 30 minutes, so time is the center of the hourly sample.
The acoustic modem sends data from a Teledyne-RDI 300 kHz Workhorse ADCP, mounted in an upward-facing orientation at 85m.
| Inductive data listings: | Daily | Full |
| Temperature plots: | This week | Full |
| Current Velocity (inductive) plots: | This week | Full |
| Acoustic (ADCP) data listings: | Daily | Full |
| ADCP plots: | This week | Full |
Inductive Subsurface Instrumentation
The rate listed is the sample rate, in minutes, however the transmited data is subsampled once per hour; the sample rate provides a time window within which the sample may have been taken.
| Instrument | S/N: | Depth (m) | Rate |
| SBE-39 | 4462 | 10 | 10 |
| Sontek | D193 | 12.5 | 20 |
| SBE-37p | 0671 | 25 | 10 |
| SBE-37 | 0683 | 45 | 10 |
| SBE-37 | 0685 | 65 | 10 |
| SBE-39 | 4463 | 80 | 10 |
ADCP
The instrument is a 300 kHz Teledyne-RDI ADCP Workhorse, and is mounted in an upward-looking orientation.| Instrument | S/N: | Depth (m) | Rate |
| ADCP | 2601 | 85 | 60 |
Last updated: September 14, 2009