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Lalande, Catherine; Nöthig, Eva-Maria; Somavilla Cabrillo, Raquel; Bauerfeind, Eduard; Shevchenko, Vladimir P; Okolodkov, Yuri (2014): Under-ice export flux measurements by short-term drifting sediment traps at 27 stations in the Arctic Ocean during summer 1995, 1997, and 2012. PANGAEA, https://doi.org/10.1594/PANGAEA.828349, Supplement to: Lalande, C et al. (2014): Variability in under-ice export fluxes of biogenic matter in the Arctic Ocean. Global Biogeochemical Cycles, 28(5), 571-583, https://doi.org/10.1002/2013GB004735

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Abstract:
A critical question regarding the organic carbon cycle in the Arctic Ocean is whether the decline in ice extent and thickness and the associated increase in solar irradiance in the upper ocean will result in increased primary production and particulate organic carbon (POC) export. To assess spatial and temporal variability in POC export, under-ice export fluxes were measured with short-term sediment traps in the northern Laptev Sea in July-August-September 1995, north of the Fram Strait in July 1997, and in the Central Arctic in August-September 2012. Sediment traps were deployed at 2-5 m and 20-25 m under ice for periods ranging from 8.5 to 71 h. In addition to POC fluxes, total particulate matter, chlorophyll a, biogenic particulate silica, phytoplankton, and zooplankton fecal pellet fluxes were measured to evaluate the amount and composition of the material exported in the upper Arctic Ocean. Whereas elevated export fluxes observed on and near the Laptev Sea shelf were likely the combined result of high primary production, resuspension, and release of particulate matter from melting ice, low export fluxes above the central basins despite increased light availability during the record minimum ice extent of 2012 suggest that POC export was limited by nutrient supply during summer. These results suggest that the ongoing decline in ice cover affects export fluxes differently on Arctic shelves and over the deep Arctic Ocean and that POC export is likely to remain low above the central basins unless additional nutrients are supplied to surface waters.
Coverage:
Median Latitude: 82.713759 * Median Longitude: 82.075000 * South-bound Latitude: 78.720000 * West-bound Longitude: -6.800000 * North-bound Latitude: 88.827670 * East-bound Longitude: 150.170000
Date/Time Start: 1995-07-28T00:00:00 * Date/Time End: 2012-09-29T15:10:00
Minimum DEPTH, water: m * Maximum DEPTH, water: 25 m
Event(s):
PS36/008-2  * Latitude: 79.150000 * Longitude: 146.330000 * Date/Time: 1995-07-28T00:00:00 * Elevation: -100.0 m * Location: Northern Laptev Sea * Campaign: ARK-XI/1 (PS36) * Basis: Polarstern * Method/Device: Trap, shorttime (TRAPST)
PS36/024-5  * Latitude: 79.030000 * Longitude: 131.400000 * Date/Time: 1995-08-04T00:00:00 * Elevation: -3150.0 m * Location: Northern Laptev Sea * Campaign: ARK-XI/1 (PS36) * Basis: Polarstern * Method/Device: Trap, shorttime (TRAPST)
PS36/025-4  * Latitude: 81.080000 * Longitude: 105.320000 * Date/Time: 1995-08-07T00:00:00 * Elevation: -2750.0 m * Location: Northern Laptev Sea * Campaign: ARK-XI/1 (PS36) * Basis: Polarstern * Method/Device: Trap, shorttime (TRAPST)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Event labelEvent
GearGear
Date/Time of eventDate/Time
DurationDurationh
Latitude of eventLatitude
Longitude of eventLongitude
DEPTH, waterDepth watermGeocode
Chlorophyll a, fluxChl a fluxmg/m2/dayLalande, Catherine
Carbon, organic, particulate, fluxPOC fluxmg/m2/dayLalande, Catherine
10 Seston, fluxSest fluxmg/m2/dayLalande, Catherine
11 Silicate, particulate, flux per dayPSi(OH)4 fluxmg/m2/dayLalande, Catherine
12 Fecal pellet carbon, fluxFecal pel C fluxmg/m2/dayLalande, Catherine
13 Carbon/Nitrogen ratioC/NLalande, Catherine
14 Diatoms, pennales, cell, fluxDiatom pen cell flux#/m2/dayLalande, Catherine
15 Diatoms, centrales, cell, fluxDiatom cen cell flux#/m2/dayLalande, Catherine
16 Flagellate cell, fluxFlag cell flux#/m2/dayLalande, Catherine
17 Melosira arctica, cell, fluxM. arctica cell flux#/m2/dayLalande, Catherine
18 Melosira arctica, spores, fluxM. arctica spores flux#/m2/dayLalande, Catherine
19 Melosira arctica, valves, fluxM. arctica valv flux#/m2/dayLalande, Catherine
20 Emiliania huxleyi, fluxE. huxleyi flux106 #/m2/dayLalande, Catherine
Size:
723 data points

Data

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


Event

Gear

Date/Time

Duration [h]

Latitude

Longitude

Depth water [m]

Chl a flux [mg/m2/day]

POC flux [mg/m2/day]
10 
Sest flux [mg/m2/day]
11 
PSi(OH)4 flux [mg/m2/day]
12 
Fecal pel C flux [mg/m2/day]
13 
C/N
14 
Diatom pen cell flux [#/m2/day]
15 
Diatom cen cell flux [#/m2/day]
16 
Flag cell flux [#/m2/day]
17 
M. arctica cell flux [#/m2/day]
18 
M. arctica spores flux [#/m2/day]
19 
M. arctica valv flux [#/m2/day]
20 
E. huxleyi flux [106 #/m2/day]
PS36/008-2 Trap, shorttime1995-07-288.579.1500146.330059.413299.825518.62003.58.5145900000143000054610006400000
PS36/008-2Trap, shorttime1995-07-288.579.1500146.3300254.906347.28863.01549.110.6307000003170000631000126100000
PS36/024-5 Trap, shorttime1995-08-0416.079.0300131.400050.038187.72150.477.910.246000001300000000
PS36/024-5Trap, shorttime1995-08-0416.079.0300131.4000250.137262.64040.8143.710.72210000023000002220000121000
PS36/025-4 Trap, shorttime1995-08-0718.081.0800105.320050.02471.5417.35.88.7670000044000004040000404000
PS36/025-4Trap, shorttime1995-08-0718.081.0800105.32002557.2434.110.39.418000002200000000
PS36/027-3 Trap, shorttime1995-08-0825.081.2000106.550050.01766.7283.86.25.198.737000000000533000
PS36/027-3Trap, shorttime1995-08-0825.081.2000106.5500250.03354.6229.64.94.0310.07000001590000012780000689000
PS36/042-3 Trap, shorttime1995-08-1611.078.7200134.730050.07068.0352.427.11.6513.611000001200000000
PS36/042-3Trap, shorttime1995-08-1611.078.7200134.7300250.03993.41288.976.22.9913.467000000000157000
PS36/044-3 Trap, shorttime1995-08-1718.079.0800135.130050.02495.0712.028.70.8211.92900000430000002160000
PS36/044-3Trap, shorttime1995-08-1718.079.0800135.1300250.026157.1936.740.50.518.9120000000000
PS36/047-3 Trap, shorttime1995-08-2054.080.8800131.0500536.01454.82.20.0212.035300000110000160000026000
PS36/047-3Trap, shorttime1995-08-2054.080.8800131.0500250.041177.0552.56.11.6419.73680000040000140002100000
PS36/049-3 Trap, shorttime1995-08-2216.081.0500136.480050.07064.0687.438.51.4212.84800000018000000
PS36/049-3Trap, shorttime1995-08-2216.081.0500136.4800250.078132.0762.940.05.9610.2950000000000
PS36/057-3 Trap, shorttime1995-08-2716.081.2000150.080050.00030.0190.77.60.0130.04000001000023660000000
PS36/057-3Trap, shorttime1995-08-2716.081.2000150.0800250.00849.0224.33.00.3616.3190000010000430000000
PS36/060-3 Trap, shorttime1995-08-2818.080.3000150.170050.01049.0167.75.80.2116.320000020000735000000
PS36/060-3Trap, shorttime1995-08-2818.080.3000150.1700250.01426.0354.015.73.5313.0450000000000
PS36/075-3 Trap, shorttime1995-09-0424.080.8700123.020050.022228.0468.14.40.4225.3257000000376000000
PS36/075-3Trap, shorttime1995-09-0424.080.8700123.0200250.030384.0676.34.40.8319.2920000000000
PS44/059-3 Trap, shorttime1997-07-0623.081.100016.180050.00733.5600.77.10.0813.1200000017000000
PS44/059-3Trap, shorttime1997-07-0623.081.100016.1800250.01823.495.117.12.667.5020000222000000
PS44/064-4 Trap, shorttime1997-07-1023.081.12005.570050.01622.5129.52.80.2425.81000000160000340000000.004
PS44/064-4Trap, shorttime1997-07-1023.081.12005.5700250.01146.1191.03.81.667.71200000230000170000000.009
PS44/065-3 Trap, shorttime1997-07-1271.081.23002.400050.02940.4134.44.80.1112.0116000008300000000
PS44/065-3Trap, shorttime1997-07-1271.081.23002.4000250.03637.870.82.60.437.7180000070000137000000
PS44/070-2 Trap, shorttime1997-07-1623.581.5200-6.800050.20030.8172.912.10.0612.092800000718630000718000000
PS44/070-2Trap, shorttime1997-07-1623.581.5200-6.8000250.90656.0277.727.21.639.731600000101000003710000100000
PS44/078-2 Trap, shorttime1997-07-2047.582.28000.720050.01016.973.82.00.017.338000001340000573000000
PS44/078-2Trap, shorttime1997-07-2047.582.28000.7200250.09138.7126.94.16.357.548000003000027000000
PS44/081-1 Trap, shorttime1997-07-2248.082.23335.2167590.13000001920000855000000
PS44/081-1Trap, shorttime1997-07-2248.082.23335.2167250.03921.5116.82.64.178.317000001750000437000000
PS44/087-2 Trap, shorttime1997-07-2521.081.77006.320050.05661.8198.33.68.243000004580000482000000
PS44/087-2Trap, shorttime1997-07-2521.081.77006.3200250.03537.5161.67.90.046.40400000080000
PS80/224-1 Trap, shorttime2012-08-0925.084.050531.113850.00560.8740.817.93.8613.1400000200003000000
PS80/224-1Trap, shorttime2012-08-0925.084.050531.1138250.00959.61682.657.83.9912.4000000
PS80/237-1 Trap, shorttime2012-08-1448.083.986578.103350.0059.3333.38.92.3411.74000000545000000
PS80/237-1Trap, shorttime2012-08-1448.083.986578.1033250.076107.9807.210.88.056.1000000
PS80/255-1 Trap, shorttime2012-08-2047.482.6707109.589550.00661.6285.717.60.1714.210000020000402900011000011000
PS80/255-1Trap, shorttime2012-08-2047.482.6707109.5895250.02042.9209.19.90.765.12000004000013300029000600011000
PS80/277-1 Trap, shorttime2012-08-2528.882.8825130.129550.01466.6282.27.20.805.440000019000033533000132000019000
PS80/277-1Trap, shorttime2012-08-2528.882.8825130.1295250.00933.0454.824.41.508.2300000900000000
PS80/323-1 Trap, shorttime2012-09-0425.481.9255131.128750.00725.46.50.5311.22000001000014740000000
PS80/323-1Trap, shorttime2012-09-0425.481.9255131.1287250.03146.225.90.716.421000002700001569900011000210000
PS80/335-1 Trap, shorttime2012-09-0753.285.1018122.245350.00514.3211.77.70.3113.8200000300006086000200000
PS80/335-1Trap, shorttime2012-09-0725.085.1018122.245350.00337.04.80.0433.410000030000336000001000
PS80/349-1 Trap, shorttime2012-09-1825.087.933561.2173250.0058.34.20.0316.750000060000248000900016000108000
PS80/360-1 Trap, shorttime2012-09-2237.388.827758.863550.0035.32.50.0524.810000010000219000100002000
PS80/360-1Trap, shorttime2012-09-2237.388.827758.8635250.0135.32.60.0416.60500002007000140003000021000
PS80/384-1 Trap, shorttime2012-09-2824.084.374817.453750.0077.30.90.0120.108000022350000000.029
PS80/384-1Trap, shorttime2012-09-2824.084.374817.4537250.00516.93.10.0825.70100002065000000