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Pykäri, Janina (2022): Fluorescence measurements of colored dissolved organic matter (cDOM) in Pohjanpitäjänlahti bay in May 2021 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.947071, In: Pykäri, J (2022): Light attenuation data set along a coastal salinity gradient in Pohjanpitäjänlahti bay in May 2021 [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.947091

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Published: 2022-08-15 • DOI registered: 2022-11-16

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Abstract:
Water samples were collected from Pohjanpitäjänlahti bay in May 2021 from four stations along a coastal salinity gradient. Fluorescence was measured and T-, A-, M- and C-peaks as well as humification, biological and fluorescence indices were calculated from the water samples for characterization of colored dissolved organic matter (CDOM). The samples were collected 8 times straight to plastic bottles from a small boat. The data was collected to a thesis funded by Walter and Andreé de Nottbeck Foundation.
Keyword(s):
Baltic Sea; CDOM; chlorophyll-a; Light; light-absorbing particles; light attenuation; light intensity; particulate matter; Secchi disk depth
Related to:
Pykäri, Janina (2022): Comparing three methods to estimate light attenuation along a coastal salinity gradient [thesis]. Master's thesis. University of Helsinki, https://urn.fi/URN:NBN:fi:hulib-202205041795
Coverage:
Median Latitude: 60.023312 * Median Longitude: 23.471754 * South-bound Latitude: 59.855850 * West-bound Longitude: 23.260533 * North-bound Latitude: 60.092850 * East-bound Longitude: 23.568400
Date/Time Start: 2021-05-04T13:35:00 * Date/Time End: 2021-05-27T12:50:00
Minimum DEPTH, water: 0.5 m * Maximum DEPTH, water: 0.5 m
Event(s):
Pojo_bay_1  * Latitude: 60.092850 * Longitude: 23.568400 * Date/Time Start: 2021-05-04T14:40:00 * Date/Time End: 2021-05-27T10:10:00 * Elevation: -4.2 m * Location: Pohjanpitäjänlahti bay * Method/Device: Multiple investigations (MULT)
Pojo_bay_2  * Latitude: 60.089850 * Longitude: 23.545567 * Date/Time Start: 2021-05-04T15:10:00 * Date/Time End: 2021-05-27T10:55:00 * Elevation: -2.0 m * Location: Pohjanpitäjänlahti bay * Method/Device: Multiple investigations (MULT)
Pojo_bay_3  * Latitude: 60.054700 * Longitude: 23.512517 * Date/Time Start: 2021-05-04T13:35:00 * Date/Time End: 2021-05-27T11:20:00 * Elevation: -17.0 m * Location: Pohjanpitäjänlahti bay * Method/Device: Multiple investigations (MULT)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Event labelEventPykäri, Janina
2 DATE/TIMEDate/TimePykäri, JaninaGeocode
3 LATITUDELatitudePykäri, JaninaGeocode
4 LONGITUDELongitudePykäri, JaninaGeocode
5 DEPTH, waterDepth watermPykäri, JaninaGeocode
6 Fluorescence, dissolved organic matter, T coble-peakFDOM T-peakRUPykäri, JaninaSpectrophotometer, Shimadzu UV-2501, Shimadzu Corporation, Kyoto, Japan
7 Fluorescence, dissolved organic matter, A coble-peakFDOM A-peakRUPykäri, JaninaSpectrophotometer, Shimadzu UV-2501, Shimadzu Corporation, Kyoto, Japan
8 Fluorescence, dissolved organic matter, M coble-peakFDOM M-peakRUPykäri, JaninaSpectrophotometer, Shimadzu UV-2501, Shimadzu Corporation, Kyoto, Japan
9 Fluorescence, dissolved organic matter, C coble-peakFDOM C-peakRUPykäri, JaninaSpectrophotometer, Shimadzu UV-2501, Shimadzu Corporation, Kyoto, Japan
10 Fluorescence, dissolved organic matter, fluorescence indexfDOM FIPykäri, JaninaCalculated in R using the packages tidyverse and eemR
11 Fluorescence, dissolved organic matter, humification indexfDOM HIPykäri, JaninaCalculated in R using the packages tidyverse and eemR
12 Fluorescence, dissolved organic matter, biological indexfDOM BIPykäri, JaninaCalculated in R using the packages tidyverse and eemR
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
224 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Event		2 
Date/Time		3 
Latitude		4 
Longitude		5 
Depth water [m]		6 
FDOM T-peak [RU]		7 
FDOM A-peak [RU]		8 
FDOM M-peak [RU]		9 
FDOM C-peak [RU]		10 
fDOM FI		11 
fDOM HI		12 
fDOM BI
Pojo_bay_1 2021-05-04T14:4060.0928523.5684000.50.1386241.2981890.8634730.6800351.32778615.0197980.541321
Pojo_bay_12021-05-06T14:3060.0928523.5684000.50.1311581.2908170.8497350.6590171.37776516.6425500.515768
Pojo_bay_12021-05-10T14:3060.0928523.5684000.50.1405311.3105270.8902410.6740901.24570516.6900380.545187
Pojo_bay_12021-05-13T11:4060.0928523.5684000.50.1379201.3294310.8683250.6641711.36139416.1576710.549414
Pojo_bay_12021-05-17T10:4560.0928523.5684000.50.1467481.2862000.8661700.6324031.35138315.8313450.546106
Pojo_bay_12021-05-20T14:2560.0928523.5684000.50.1365481.3034940.8587750.6430021.40141916.1693560.554845
Pojo_bay_12021-05-24T08:5560.0928523.5684000.50.1342391.2790500.8569530.6446411.36601216.5981640.576791
Pojo_bay_12021-05-27T10:1060.0928523.5684000.50.1254121.3007490.8816740.6989061.34645116.8002690.520914
Pojo_bay_2 2021-05-04T15:1060.0898523.5455670.50.1147201.1319700.7481700.5832711.38350917.2060670.549097
Pojo_bay_22021-05-06T15:1560.0898523.5455670.50.1472461.2080460.7963840.6177291.36959315.9153210.566408
Pojo_bay_22021-05-10T14:5560.0898523.5455670.50.1404011.2577490.8148830.6504381.43007815.7901400.544297
Pojo_bay_22021-05-13T12:0060.0898523.5455670.50.1348791.1963400.7761500.5959531.30164315.7854610.555061
Pojo_bay_22021-05-17T11:0060.0898523.5455670.50.1328571.2172480.7656700.6146591.37977016.3619470.574106
Pojo_bay_22021-05-20T14:4060.0898523.5455670.50.1279061.1757860.7763400.6087881.31020516.2896370.526793
Pojo_bay_22021-05-24T09:2560.0898523.5455670.50.1352191.1881930.7722540.5918461.35417716.3863880.566200
Pojo_bay_22021-05-27T10:5560.0898523.5455670.50.1317011.2166640.8087270.6473701.34777117.1865160.546539
Pojo_bay_3 2021-05-04T13:3560.0547023.5125170.50.1324241.1316090.7492470.5737281.37914116.1561890.553710
Pojo_bay_32021-05-06T15:4060.0547023.5125170.50.1244881.1194980.7442040.5714621.42186716.9617950.539113
Pojo_bay_32021-05-10T15:2060.0547023.5125170.50.1271961.1201020.7361590.5685481.38154316.2981930.555819
Pojo_bay_32021-05-13T12:2060.0547023.5125170.50.1375901.1829490.7842670.5943101.31312414.8115240.541961
Pojo_bay_32021-05-17T11:3060.0547023.5125170.50.1230101.0950890.7188660.5500561.35618815.5949280.569563
Pojo_bay_32021-05-20T15:0060.0547023.5125170.50.1278581.1230230.7398040.5664031.30392114.7247920.550751
Pojo_bay_32021-05-24T08:1060.0547023.5125170.50.1294991.1700660.7670760.5867761.40757615.9397250.567438
Pojo_bay_32021-05-27T11:2060.0547023.5125170.50.1156101.0604710.7105800.5277181.35374615.6807750.559345
Pojo_bay_4 2021-05-04T16:3559.8558523.2605330.50.0866530.4919130.3008330.2166621.4539869.2434330.696204
Pojo_bay_42021-05-06T17:1059.8558523.2605330.50.0846920.4483840.2784290.1925901.3905068.8099370.714126
Pojo_bay_42021-05-10T16:2559.8558523.2605330.50.0843720.3993960.2458830.1622591.2753847.7061720.721820
Pojo_bay_42021-05-13T14:2559.8558523.2605330.50.0842910.4435460.2774970.1850321.4310138.1568480.693547
Pojo_bay_42021-05-17T12:3059.8558523.2605330.50.0892590.4396230.2675830.1767801.2899997.9557020.706028
Pojo_bay_42021-05-20T12:5059.8558523.2605330.50.0883530.4112700.2462460.1753441.3837597.5760560.760687
Pojo_bay_42021-05-24T14:5559.8558523.2605330.50.0767650.4034270.2377360.1552781.4180877.9960400.790027
Pojo_bay_42021-05-27T12:5059.8558523.2605330.50.0725110.4035330.2414010.1609821.6252768.0238210.785956