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
Data
| 1 Event | 2 Date/Time | 3 Latitude | 4 Longitude | 5 Depth water [m] | 6 SPM [mg/l] | 7 ay 440 nm [1/m] | 8 z(SD) [m] |
|---|---|---|---|---|---|---|---|
| ATA3_05 | 2008-02-06T07:45 | 16.168 | -17.068 | 5.0 | 0.447 | 0.049 | 14 |
| ATA3_06 | 2008-02-06T12:09 | 16.169 | -17.502 | 5.0 | 0.405 | 0.044 | 20 |
| ATA3_07 | 2008-02-06T16:45 | 16.167 | -18.001 | 5.0 | 0.493 | 0.021 | 14 |
| ATA3_09 | 2008-02-07T09:40 | 16.180 | -20.001 | 5.0 | 0.345 | 0.035 | 24 |
| ATA3_10 | 2008-02-07T17:37 | 17.001 | -20.001 | 5.0 | 0.285 | 0.024 | 17 |
| ATA3_12 | 2008-02-08T10:32 | 17.006 | -17.992 | 5.0 | 0.345 | 0.076 | 18 |
| ATA3_13 | 2008-02-08T16:23 | 17.013 | -17.494 | 5.0 | 0.567 | 0.062 | 12 |
| ATA3_15 | 2008-02-09T00:19 | 17.000 | -16.800 | 5.0 | 0.987 | 0.101 | 10 |
| ATA3_17 | 2008-02-10T00:33 | 16.992 | -16.475 | 5.0 | 0.853 | 0.083 | |
| ATA3_18 | 2008-02-10T13:23 | 18.995 | -16.480 | 5.0 | 0.953 | 0.125 | 13 |
| ATA3_19 | 2008-02-10T15:51 | 18.997 | -16.648 | 5.0 | 1.670 | 0.131 | 10 |
| ATA3_20 | 2008-02-10T18:40 | 18.999 | -16.851 | 5.0 | 0.987 | 0.090 | |
| ATA3_21 | 2008-02-11T23:17 | 19.005 | -17.414 | 5.0 | 0.580 | 0.092 | |
| ATA3_22 | 2008-02-12T04:49 | 19.000 | -18.000 | 5.0 | 0.607 | 0.074 | |
| ATA3_23 | 2008-02-12T12:47 | 18.997 | -19.003 | 5.0 | 0.633 | 0.102 | 18 |
| ATA3_24 | 2008-02-12T20:56 | 18.996 | -20.002 | 5.0 | 0.500 | 0.062 | |
| ATA3_25 | 2008-02-13T05:34 | 19.501 | -19.001 | 5.0 | 0.687 | 0.067 | |
| ATA3_26 | 2008-02-13T14:19 | 19.998 | -18.002 | 5.0 | 0.947 | 0.145 | 10 |
| ATA3_27 | 2008-02-13T19:18 | 20.142 | -17.675 | 5.0 | 0.890 | 0.138 | 9 |
| ATA3_28 | 2008-02-14T12:04 | 20.166 | -17.549 | 5.0 | 1.160 | 0.120 | 11 |
| ATA3_29 | 2008-02-15T08:06 | 18.000 | -16.283 | 5.0 | 1.580 | 0.163 | 8 |
| ATA3_30 | 2008-02-15T10:27 | 17.928 | -16.381 | 5.0 | 0.128 | 11 | |
| ATA3_31 | 2008-02-15T13:37 | 17.830 | -16.563 | 5.0 | 0.670 | 0.096 | 13 |
| ATA3_32 | 2008-02-16T17:42 | 18.011 | -17.005 | 5.0 | 1.320 | 0.107 | 12 |
| ATA3_33 | 2008-02-16T22:35 | 18.001 | -17.518 | 5.0 | 1.187 | 0.103 | |
| ATA3_34 | 2008-02-17T03:45 | 18.005 | -17.999 | 5.0 | 0.640 | 0.107 | |
| ATA3_35 | 2008-02-17T12:20 | 18.010 | -19.002 | 5.0 | 0.654 | 0.064 | 20 |
| ATA3_36 | 2008-02-17T19:54 | 18.009 | -20.011 | 5.0 | 0.560 | 0.051 | |
| ATA3_37 | 2008-02-18T02:57 | 18.004 | -21.002 | 5.0 | 0.720 | 0.068 | |
| ATA3_38 | 2008-02-18T10:43 | 18.006 | -22.013 | 5.0 | 0.980 | 0.084 | 19 |
| ATA3_39 | 2008-02-18T18:21 | 18.004 | -23.007 | 5.0 | 0.427 | 0.044 | 21 |