Apex/ISUS Float List
A brief description of the floats that have been deployed. Access real time data here.
| Float Designation (WMO ID#) | Dates Deployed | Where | Link to Data File These are tab delimited, ASCII text files in OceanDataView format. |
Why? |
| 5145MtyBay | 9/17 to 9/21/2007 | Monterey Bay | A short test deployment of float 5145 to verify operation of ISUS. The float profiled twice each day for 5 days and was then recovered. | |
| 5145Hawaii (5901468) | 12/22/2007 to 10/2011
|
Hawaii Ocean Time series (HOT) station | Planned four year deployment to assess long-term ISUS sensor performance. Low nitrate concentrations in surface waters near HOT will allow us to assess sensor drift over years. Float 5145 profiled once per day for the first 7 days and is now profiling every 5 days. The NO3 sensor stopped 9/2010 due to a software problem. The float was recovered 10/31/2011 to recalibrate the sensor. | |
| 5146SoOcean (5901492) | 2/21/2008 to 3/2011 | Southern Ocean on the CLIVAR I6S Line at 50 degrees S, which is southeast of Africa | Seasonal consumption of nitrate during spring/summer phytoplankton blooms in the Southern Ocean tracks new primary production (NPP). Long-term measurements of nitrate will allow us to assess changes in NPP over interannual time scales. | |
| 5143StnP (5902128) | 8/31/2008 to 8/2011 | Ocean Station Papa at 50 North, 145 West in the Gulf of Alaska | Seasonal consumption of nitrate during spring/summer phytoplankton blooms in the Subarctic North Pacific tracks new primary production (NPP). Long-term measurements of nitrate will allow us to assess changes in NPP over interannual time scales. | |
| 5426DrakePass (5902112) | 1/7/2009 to present | Drake Passage at 55 South, 80 West in the Southern Ocean | Seasonal consumption of nitrate during spring/summer phytoplankton blooms in the Southern Ocean tracks new primary production (NPP). Long-term measurements of nitrate will allow us to assess changes in NPP over interannual time scales. | |
| 6391Bermuda (1901378) | 10/12/2009 to present | Bermuda Atlantic Time Series (BATS) station | Four year deployment in the North Atlantic. This deployment will test the ability of the Apex/ISUS to resolve small nutrient injection events, which occur during deep winter mixing near BATS. | |
| 6401MtyBay | 8/3/2009 to 8/6/2009 |
Monterey Bay | A four day test deployment of float 6401 offshore of Monterey Bay. This is a modified Apex float that is designed to carry more biogeochemical sensors and to make sensor integration much easier. 6401 carries an ISUS nitrate sensor and an Aanderaa oxygen optode. | |
| 6401Hawaii (1901379) | 11/6/2009 to present |
Hawaii Ocean Time series (HOT) station | Four year deployment to assess long-term ISUS sensor performance. Low nitrate concentrations in surface waters near HOT will allow us to assess sensor drift over years in extended Apex float design. | |
| 6891Hawaii (5903272) | Deployed May 22, 2010 |
Hawaii Ocean Time series (HOT) station | Four year deployment to assess long-term ISUS sensor performance. Low nitrate concentrations in surface waters near HOT will allow us to assess sensor drift over years in extended Apex float design. | |
| 6400StnP (5903274) | Deployed June 18, 2010 | Ocean Station Papa at 50 North, 145 West in the Gulf of Alaska | Four year deployment at Station Papa. This float will be our first to carry biooptical sensors (Wetlabs FLBB for chlorophyll fluorescence and optical backscattering, which is proportional to particle abundance), in addition to nitrate, oxygen and CTD. | |
| 6976Bermuda (5903377) | November 12, 2010 | Bermuda Atlantic Time Series (BATS) station | Four year deployment in the North Atlantic. This deployment will test the ability of the Apex/ISUS to resolve small nutrient injection events, which occur during deep winter mixing near BATS. | |
| 6403Hawaii (5903385) | Deployed Jan. 09, 2011 |
Hawaii Ocean Time series (HOT) station | Four year deployment to assess long-term ISUS sensor performance. Low nitrate concentrations in surface waters near HOT will allow us to assess sensor drift over years in extended Apex float design. The float array at Hawaii will allow meso-scale variability to be assessed. | |
| 6972StnP (5903405) | Deployed Feb. 16, 2011 | Ocean Station Papa at 50 North, 145 West in the Gulf of Alaska | Four year deployment at Station Papa. | |
| 7564Arctic (5903592) | Deployed Aug. 23, 2011 | Greenland Sea between Greenland, Svalbard & Norway | Four year deployment in the Greenland Sea region of the Arctic Ocean. This float is equipped with nitrate, oxygen and biooptics (Wetlabs FLBB for chlorophyll fluorescence and optical backscattering, which is proportional to particle abundance). | |
| 6966Hawaii | Deployed Sept 1, 2011 Recovered Nov. 1, 2011 | Hawaii Ocean Time series (HOT) station | Four year deployment to assess long-term ISUS sensor performance. The ISUS in this system is produced by Satlantic and is the prototype for a commercial design. Note this float has an intermittent connection on the CTD and does not return all of the normal samples. It was recovered to repair the CTD. | |
| 6975Bermuda (5903594) | October 5, 2011 | Bermuda Atlantic Time Series (BATS) station | Four year deployment in the North Atlantic. This deployment will test the ability of the Apex/ISUS to resolve small nutrient injection events, which occur during deep winter mixing near BATS. | |
| 7622Hawaii (5903611) | Deployed Nov. 2, 2011 |
Hawaii Ocean Time series (HOT) station | Four year deployment to assess long-term SUNA nitrate sensor performance. SUNA is an external nitrate sensor designed by Satlantic with a different optical design than ISUS. | |
| 6967SoAtlantic (5903612) | Deployed Dec. 11, 2011 | South Atlantic | Four year deployment in the South Atlantic/Southern Ocean north of the Polar Front. The float is equipped with biooptical sensors in addition to nitrate and oxygen. | |
| 6381ArabianSea (5903586) | Deployed Dec. 16, 2011 | Arabian Sea | Four year deployment in the Arabian Sea over an intense oxygen minimum. The float will be used to study coupling between oxygen and denitrification The float is equipped with biooptical sensors in addition to nitrate and oxygen. | |
| 7601StnP (5903714) | Deployed Feb. 18, 2012 | Ocean Station Papa at 50 North, 145 West in the Gulf of Alaska | Four year deployment at Station Papa. | |
| 0068RossSea (5903717) | Deployed Feb. 20, 2012 | In the Southern Ocean at the northern edge of the Ross Sea | Four year deployment in the Southern Ocean. This float will be under ice in winter. It will avoid damage using ice detection software. Data will be returned when ice has melted. | |
| 6968SoOcn (5903718) | Deployed March 6, 2012 | In the Southern Ocean south of New Zealand | Four year deployment in the Southern Ocean. | |
| 7552SoOcn (5903729) | Deployed March 15, 2012 | In the Southern Ocean southwest of Australia | Four year deployment in the Southern Ocean. | |
| 7558ETNP (5903711) | Deployed March 25, 2012 | Eastern Tropical North Pacific | Four year deployment in the Eastern Tropical North Pacific over an intense oxygen minimum. The float will be used to study coupling between oxygen and denitrification. The float is equipped with biooptical sensors in addition to nitrate and oxygen. The float was deployed by the NOAA ship Ka'imimoana | |
| 6960ETNP (5903742) | Deployed March 25, 2012 | Eastern Tropical North Pacific | Four year deployment in the Eastern Tropical North Pacific over an intense oxygen minimum. The float will be used to study coupling between oxygen and denitrification. The float was deployed by NOAA Ship Ka'imimoana | |
| 8374HOT (5903741) | Deployed March 27, 2012 | Hawaii Ocean Time series (HOT) station | This float was deployed with oxygen and an experimental pH sensor which failed. | |
| 7597Hawaii (5903753) | Deployed May 23, 2012 | Hawaii Ocean Time series (HOT) station | Four year deployment to assess long-term ISUS sensor performance. The ISUS stopped after 1 profile due to unknown problems. | |
| 7593Hawaii (5903754) | Deployed July 10, 2012 | Hawaii Ocean Time series (HOT) station | Four year deployment to assess long-term ISUS sensor performance. The ISUS in this system is produced by Satlantic and is the prototype for a commercial design. | |
| 7596Arctic (5903887) | Deployed Aug. 20, 2012 | Greenland Sea between Greenland, Svalbard & Norway | Four year deployment in the Greenland Sea region of the Arctic Ocean. This float is equipped with nitrate, oxygen and biooptics (Wetlabs FLBB for chlorophyll fluorescence and optical backscattering, which is proportional to particle abundance). | |
| 7663Bermuda (5903892) | August 23, 2012 | Bermuda Atlantic Time Series (BATS) station | Four year deployment in the North Atlantic. This deployment will test the ability of the Apex/ISUS to resolve small nutrient injection events, which occur during deep winter mixing near BATS. | |
| 7672Hawaii (5903893) | Deployed October 2, 2012 | Hawaii Ocean Time series (HOT) station | This is our first float with a Deep-Sea Durafet pH sensor. The pH sensor was modified from a standard Honeywell Durafet design to be pressure tolerant. This is the first test of a new pH sensor designed to monitor ocean acidity. There is an O2 sensor, but no nitrate sensor on this float. | |
| 7647CalCurrent (5904021) | November 18, 2012 | Station M in the California Current | Four year deployment in the California Current. This deployment will observe seasonal variability in nutrient supply in the waters of the California Current. | |
| 7553SoPacific (5903755) | November 23, 2012 | South Pacific | Four year deployment in the South Pacific. This region has the lowest chlorophyll concentrations and clearest water of the global ocean. Nitrate isdepleted to depths near 200 m. | |
| 0069Bermuda (5903890) | November 29, 2012 | Bermuda | This is the original float 5145, which was recovered after a 3 year deployment near Hawaii. It was refurbished and redeployed at BATS. | |
| 7550BayofBengal (5903712) | December 30, 2012 | Bay of Bengal | This float was deployed in the Bay of Bengal to provide a comparison to float 6381 in the Arabian Sea. Due to the very low density of surface water in the Bay of Bengal, this float won't profile much deeper than 700 meters. | |
| 6881StnP (5903891) | Deployed Feb. 12, 2013 | Ocean Station Papa at 50 North, 145 West in the Gulf of Alaska | Four year deployment at Station Papa. This float has nitrate optics on the top end cap, but not in the pumped flow stream. This is an experiment to see how the flow stream impacts sensor fouling. | |
| 8497Hawaii (5904094) | Deployed Feb. 15, 2013 | Hawaii Ocean Time series (HOT) station | Four year deployment to assess long-term SUNA sensor performance. The SUNA nitrate sensor in this system is produced by Satlantic and is the commercial deep SUNA design. | |
| 7546Kuroshio (5904034) | Deployed Feb. 28, 2013 | Kuroshio Extension Region | Four year deployment as part of an experiment planned by Steve Emerson and Steve Riser to study the processes that regulate pCO2 levels in the Kuroshio Extension Region. | |
| 7674Kuroshio (5904035) | Deployed March 1, 2013 | Kuroshio Extension Region | Four year deployment as part of an experiment planned by Steve Emerson and Steve Riser to study the processes that regulate pCO2 levels in the Kuroshio Extension Region. | |
| 7619SoOcn (5904105) | Deployed March 2, 2013 | Southern Ocean south of Australia. | Four year deployment in the Southern Ocean. | |
| 7620SoOcn (5904104) | Deployed March 3, 2013 | Southern Ocean south of Australia. | Four year deployment in the Southern Ocean. | |
| 8486MtyBay (nnnnnn) | Deployed April 29, 2013 | Monterey Bay. | Two day test deployment of a float that integrates the Deep-Sea Durafet pH sensor, ISUS nitrate sensor, Aanderaa oxygen optode and Wetlabs FLBB chlorophyll and backscatter sensor. This float is the prototype of the design proposed for a large Southern Ocean observing system. It will be recovered and sent to Hawaii for a long term deployment to test sensor performance and integration. | |
| 8486Hawaii (5904124) | Deployed May 19, 2013 | Hawaii Ocean Time series (HOT) station | This float integrates the Deep-Sea Durafet pH sensor, ISUS nitrate sensor, Aanderaa oxygen optode and Wetlabs FLBB chlorophyll and backscatter sensor. This float is the prototype of the design proposed for a large Southern Ocean observing system. It has been deployed at Hawaii for a long term test to compare sensor performance with observations at the HOT station. | |
| 4900093 | Sept. 9, 2002 to August 8, 2005 |
Hawaii Ocean Time series (HOT) station | This was one of the first floats deployed with an oxygen sensor (Seabird 43). Results are described in Riser and Johnson (Riser, S. C. and K. S. Johnson. 2008. Net production of oxygen in the subtropical ocean. Nature, 451, 323-325). The oxygen data have been quality controlled by adjusting to match Winkler titrations made by HOT personnel on the deployment cruise. | |
| 5900952 | June 2005 to March 2007 |
Hawaii Ocean Time series (HOT) station | This float was deployed with an oxygen sensor (Aanderaa Optode) at HOT. The oxygen data have been quality controlled by adjusting to match Winkler titrations made by HOT personnel on the deployment cruise. | |
| 5901069 | March 2006 to January 2008 |
Hawaii Ocean Time series (HOT) station | This float was deployed with an oxygen sensor (Aanderaa Optode) at HOT. The oxygen data have been quality controlled by adjusting to match Winkler titrations made by HOT personnel on the deployment cruise. | |
| 5901336 | February 2007 to August 2009 |
Hawaii Ocean Time series (HOT) station | This float was deployed with an oxygen sensor (Aanderaa Optode) SW of HOT. The oxygen data have been quality controlled by adjusting to match Winkler titrations made by HOT personnel when the float drifted near to HOT. |
