Siegel, Herbert; Ohde, Thomas; Gerth, Monika (2011): Suspended matter concentration, yellow substance absorption at 440 nm and Secchi depth during L'Atalante cruise ATA03 in the Atlantic Ocean [dataset]. Leibniz Institute for Baltic Sea Research, Warnemünde, PANGAEA, https://doi.org/10.1594/PANGAEA.772306
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Project(s):
Coverage:
Median Latitude: 18.074194 * Median Longitude: -18.217516 * South-bound Latitude: 16.167000 * West-bound Longitude: -23.007000 * North-bound Latitude: 20.166000 * East-bound Longitude: -16.283000
Date/Time Start: 2008-02-06T07:45:00 * Date/Time End: 2008-02-18T18:21:00
Minimum DEPTH, water: 5.0 m * Maximum DEPTH, water: 5.0 m
Event(s):
ATA3_05 * Latitude: 16.168000 * Longitude: -17.068000 * Date/Time: 2008-02-06T07:45:00 * Campaign: ATA08_03 (IFM-GEOMAR/3) * Basis: L Atalante * Method/Device: Water sample (WS)
ATA3_06 * Latitude: 16.169000 * Longitude: -17.502000 * Date/Time: 2008-02-06T12:09:00 * Campaign: ATA08_03 (IFM-GEOMAR/3) * Basis: L Atalante * Method/Device: Water sample (WS)
ATA3_07 * Latitude: 16.167000 * Longitude: -18.001000 * Date/Time: 2008-02-06T16:45:00 * Campaign: ATA08_03 (IFM-GEOMAR/3) * Basis: L Atalante * Method/Device: Water sample (WS)
Comment:
The suspended matter concentration (SPM in gm-3) was determined according to the ESA validation protocols (Doerffer 2002). Before filtration, the Whatman GFF filters were washed, glowed and weighted. The water samples were filtrated using the pre-treated filters. After filtration, the filters were washed with Milli-Q water, dried at a temperature of 70°C and weighted.
Yellow substance absorption (ay(440 nm) in m-1) was determined according to Højerslev, (1980). The water samples were filtrated using Whatman GFF filters. The absorbance of the filtered water was measured with Perkin-Elmer Lambda-2 spectrophotometer. The ay(440nm) value was calculated using the equation ay(440 nm)= 2.303A(440 nm)/l where A is the absorbance and l is the length of the quartz cell in meters.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Ohde, Thomas | |||
| 2 | Date/Time of event | Date/Time | Ohde, Thomas | |||
| 3 | Latitude of event | Latitude | Ohde, Thomas | |||
| 4 | Longitude of event | Longitude | Ohde, Thomas | |||
| 5 | DEPTH, water | Depth water | m | Ohde, Thomas | Geocode | |
| 6 | Suspended particulate matter | SPM | mg/l | Ohde, Thomas | Determined according to Doerffer (2002) | |
| 7 | Yellow substance absorption, 440 nm | ay 440 nm | 1/m | Ohde, Thomas | Determined according to Hojerslev (1980) | |
| 8 | Depth of Secchi Disk | z(SD) | m | Ohde, Thomas | Secchi disc |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
82 data points