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| Main Authors: | , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2000
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| Online Access: | https://doi.org/10.1594/PANGAEA.738264 |
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| _version_ | 1867170903304962048 |
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| author | Breves, Wiebke Heuermann, Rüdiger |
| author_facet | Breves, Wiebke Heuermann, Rüdiger |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | As part of the German JGOFS Indian Ocean Programme, a cruise occurred in the Arabian Sea in May 1997 at the onset of the southwest monsoon. Data on gelbstoff, chlorophylla and tryptophan-like fluorescence as well as gelbstoff absorption were obtained. They indicate, that these optical parameters support the interpretation of hydrographic and biogeochemical conditions. Tryptophan-like fluorescence seems to be a useful indicator of changes in the constitution of the biomass. A comparison of gelbstoff absorption and fluorescence data from the upper 100 m reveals only a weak covariance. Special emphasis is given to the fit procedure used for retrieving the exponential slopeS of the spectral absorption coefficient.S values with a mean of 0.016 nm-1 are found in the 350 to 480 nm wavelength range. A mean slopeS set to the frequently reported value of 0.014 nm-1 in the exponential description of gelbstoff absorption might lead to a systematic over/underestimation, and thus to systematic errors, if single-wavelength absorption values are extrapolated to other spectral regions on the basis of this parameter. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_738264 |
| institution | PANGAEA |
| language | en |
| publishDate | 2000 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Physical oceanography during SONNE cruise SO119 Breves, Wiebke Heuermann, Rüdiger Calculated from conductivity; Calculated from percentage saturation; Conductivity; CTD-O; CTD with attached oxygen sensor, ME Meerestechnik Elektronik, OTS 3000; Date/Time of event; DEPTH, water; Elevation of event; Event label; JGOFS; JGOFS-IN-2; Joint Global Ocean Flux Study; Latitude of event; Longitude of event; Optics CTD; Oxygen; Oxygen saturation; Pressure, water; Salinity; SO119; SO119_CTD-1-01; SO119_CTD-10-13; SO119_CTD-11-14; SO119_CTD-12-15; SO119_CTD-13-16; SO119_CTD-16-17; SO119_CTD-18-18; SO119_CTD-19-19; SO119_CTD-2-02; SO119_CTD-20-20; SO119_CTD-21-21; SO119_CTD-22-22; SO119_CTD-23-23; SO119_CTD-24-24; SO119_CTD-25-25; SO119_CTD-25-26; SO119_CTD-26-27; SO119_CTD-28-28; SO119_CTD-29-29; SO119_CTD-3-03; SO119_CTD-30-30; SO119_CTD-31-31; SO119_CTD-32-32; SO119_CTD-33-33; SO119_CTD-36-34; SO119_CTD-36-35; SO119_CTD-37-36; SO119_CTD-39-37; SO119_CTD-40-38; SO119_CTD-4-04; SO119_CTD-4-05; SO119_CTD-41-39; SO119_CTD-42-40; SO119_CTD-43-41; SO119_CTD-5-06; SO119_CTD-5-07; SO119_CTD-6-08; SO119_CTD-7-09; SO119_CTD-7-11; SO119_CTD-9-12; Sonne; Temperature, water As part of the German JGOFS Indian Ocean Programme, a cruise occurred in the Arabian Sea in May 1997 at the onset of the southwest monsoon. Data on gelbstoff, chlorophylla and tryptophan-like fluorescence as well as gelbstoff absorption were obtained. They indicate, that these optical parameters support the interpretation of hydrographic and biogeochemical conditions. Tryptophan-like fluorescence seems to be a useful indicator of changes in the constitution of the biomass. A comparison of gelbstoff absorption and fluorescence data from the upper 100 m reveals only a weak covariance. Special emphasis is given to the fit procedure used for retrieving the exponential slopeS of the spectral absorption coefficient.S values with a mean of 0.016 nm-1 are found in the 350 to 480 nm wavelength range. A mean slopeS set to the frequently reported value of 0.014 nm-1 in the exponential description of gelbstoff absorption might lead to a systematic over/underestimation, and thus to systematic errors, if single-wavelength absorption values are extrapolated to other spectral regions on the basis of this parameter. |
| title | Physical oceanography during SONNE cruise SO119 |
| topic | Calculated from conductivity; Calculated from percentage saturation; Conductivity; CTD-O; CTD with attached oxygen sensor, ME Meerestechnik Elektronik, OTS 3000; Date/Time of event; DEPTH, water; Elevation of event; Event label; JGOFS; JGOFS-IN-2; Joint Global Ocean Flux Study; Latitude of event; Longitude of event; Optics CTD; Oxygen; Oxygen saturation; Pressure, water; Salinity; SO119; SO119_CTD-1-01; SO119_CTD-10-13; SO119_CTD-11-14; SO119_CTD-12-15; SO119_CTD-13-16; SO119_CTD-16-17; SO119_CTD-18-18; SO119_CTD-19-19; SO119_CTD-2-02; SO119_CTD-20-20; SO119_CTD-21-21; SO119_CTD-22-22; SO119_CTD-23-23; SO119_CTD-24-24; SO119_CTD-25-25; SO119_CTD-25-26; SO119_CTD-26-27; SO119_CTD-28-28; SO119_CTD-29-29; SO119_CTD-3-03; SO119_CTD-30-30; SO119_CTD-31-31; SO119_CTD-32-32; SO119_CTD-33-33; SO119_CTD-36-34; SO119_CTD-36-35; SO119_CTD-37-36; SO119_CTD-39-37; SO119_CTD-40-38; SO119_CTD-4-04; SO119_CTD-4-05; SO119_CTD-41-39; SO119_CTD-42-40; SO119_CTD-43-41; SO119_CTD-5-06; SO119_CTD-5-07; SO119_CTD-6-08; SO119_CTD-7-09; SO119_CTD-7-11; SO119_CTD-9-12; Sonne; Temperature, water |
| url | https://doi.org/10.1594/PANGAEA.738264 |