Citation:

science.1231346

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Coverage:

Median Latitude: 84.697542 * Median Longitude: 89.972729 * South-bound Latitude: 81.884667 * West-bound Longitude: 31.109500 * North-bound Latitude: 88.827670 * East-bound Longitude: 131.128670

Date/Time Start: 2012-08-09T08:08:00 * Date/Time End: 2012-09-23T22:10:00

Minimum Elevation: -4383.5 m * Maximum Elevation: -3424.0 m

Event(s):

PS80/224-1 (Ice station #1) * Latitude Start: 84.050500 * Longitude Start: 31.113830 * Latitude End: 84.033833 * Longitude End: 31.109500 * Date/Time Start: 2012-08-09T08:08:00 * Date/Time End: 2012-08-11T12:23:00 * Elevation Start: -4013.0 m * Elevation End: -4011.0 m * Campaign: (PS80 IceArc) * Basis: * Method/Device: Ice station (ICE) * Comment: Position sensor: Ship's GPS; Wind speed start: 0.2 kn; Wind speed end: 0.2 kn; Sea ice coverage start: 95 %; Sea ice coverage end: 95 %

PS80/237-1 (Ice station #2) * Latitude Start: 83.986500 * Longitude Start: 78.103330 * Latitude End: 83.933667 * Longitude End: 75.504667 * Date/Time Start: 2012-08-14T13:10:00 * Date/Time End: 2012-08-16T18:42:00 * Elevation Start: -3484.0 m * Elevation End: -3424.0 m * Campaign: (PS80 IceArc) * Basis: * Method/Device: Ice station (ICE) * Comment: Position sensor: Ship's GPS; Wind speed start: 0.3 kn; Wind speed end: 0.6 kn; Sea ice coverage start: 90 %; Sea ice coverage end: 80 %

PS80/255-1 (Ice station #3) * Latitude Start: 82.670670 * Longitude Start: 109.589500 * Latitude End: 83.142333 * Longitude End: 109.929333 * Date/Time Start: 2012-08-20T08:48:00 * Date/Time End: 2012-08-22T11:49:00 * Elevation Start: -3569.0 m * Elevation End: -3608.0 m * Campaign: (PS80 IceArc) * Basis: * Method/Device: Ice station (ICE) * Comment: Position sensor: Ship's GPS; Wind speed start: 0.6 kn; Wind speed end: 0.9 kn; Sea ice coverage start: 95 %; Sea ice coverage end: 95 %

Comment:

Nutrients were analyzed in an air-conditioned lab container with a Technicon TRAACS 800, continuous flow auto analyzer. Measurements were made simultaneously on four channels: phosphate, silicate, nitrate and nitrite together, and nitrite separately. All measurements were calibrated with standards diluted in low nutrient seawater.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event
2	Optional event label	Event 2
3	Date/Time of event	Date/Time
4	Latitude of event	Latitude
5	Longitude of event	Longitude
6	Ice coverage	Ice cov	%	Boetius, Antje	Sea ice observation according to ASSIST protocol
7	Ice thickness, minimum	Ice thick min	m	Boetius, Antje	Sea ice observation according to ASSIST protocol
8	Ice thickness, maximum	Ice thick max	m	Boetius, Antje	Sea ice observation according to ASSIST protocol
9	Ice type	Ice type		Boetius, Antje	Sea ice observation according to ASSIST protocol
10	Melt pond coverage on sea ice	Melt pond cov	%	Boetius, Antje	Sea ice observation according to ASSIST protocol
11	Drift	Drift	kn	Boetius, Antje	Meteorological observation according to ASSIST protocol
12	Drift, standard deviation	Drift std dev	±	Boetius, Antje	Meteorological observation according to ASSIST protocol
13	Short-wave downward (GLOBAL) radiation	SWD	W/m²	Boetius, Antje	Net radiometer, Kipp & Zonen, CNR 4
14	Short-wave downward (GLOBAL) radiation, standard deviation	SWD std dev	W/m²	Boetius, Antje	Net radiometer, Kipp & Zonen, CNR 4
15	Radiation, photosynthetically active	PAR	W/m²	Boetius, Antje	Net radiometer, Kipp & Zonen, CNR 4	under ice
16	Temperature, air	TTT	°C	Boetius, Antje	Thermometer
17	Temperature, water	Temp	°C	Boetius, Antje	Thermosalinograph (TSG)	at 5m water depth
18	Salinity	Sal		Boetius, Antje	Thermosalinograph (TSG)	at 5 m water depth
19	Mixed layer depth	MLD	m	Boetius, Antje
20	Melt water depth	MWD	m	Boetius, Antje	Calculated	Estimates based on seasonal inventories of the mixed layer depth of the previous freezing season (see SOM).
21	Nitrate	[NO3]-	µmol/l	Boetius, Antje		in 0-2 m water depth under ice
22	Nitrogen/Silicon ratio	N/Si		Boetius, Antje	Calculated	in 0-2 m water depth
23	Nitrogen/Phosphorus ratio	N/P		Boetius, Antje	Calculated	in 0-2 m water depth
24	Primary production of carbon per area, daily	PP C area	g/m²/day	Boetius, Antje	Calculated	in 0-1 m water depth under ice, 14C
25	Primary production of carbon per area, yearly	PP C area	g/m²/a	Boetius, Antje	Calculated	Estimates based on seasonal inventories of the mixed layer depth of the previous freezing season (see SOM).
26	Diatoms	Diatoms	%	Boetius, Antje		Estimates based on seasonal inventories of the mixed layer depth of the previous freezing season (see SOM).
27	Algal cover	Algal cov	%	Boetius, Antje		Sub-ice
28	Ice algae composition	Ice algae comp		Boetius, Antje		Diverse algae included in various ratios Porosira sp., Pleurosigma, Nitzschia sp., Fragilariopsis sp., Entomoneis sp, Chaetoceros sp., Navicula sp., Cylindrotheca and other chain-forming pennate diatoms, chloroplasts clumps.
29	Algal cover	Algal cov	%	Boetius, Antje		at seafloor; * = Estimates include discolored patches/degraded algal patches
30	Algal cover, standard deviation	Algal cov std dev	±	Boetius, Antje
31	Pigment concentration in sediment	Pigm conc	µg/cm³	Boetius, Antje		top 1 cm sediment layer
32	Pigment concentration in sediment, standard deviation	Pigm conc std dev	±	Boetius, Antje
33	Chlorophyll a/chloroplastic pigment equivalents ratio	Chl a/CPE	%	Boetius, Antje
34	Megafauna, biomass, wet mass	Megaf biom wm	g/m²	Boetius, Antje
35	Chloroplastic pigment equivalents of gut content	CPE gut	µg/cm³	Boetius, Antje
36	Chloroplastic pigment equivalents of gut content, standard deviation	CPE gut std dev	±	Boetius, Antje
37	Chlorophyll a/chloroplastic pigment equivalents ratio	Chl a/CPE	%	Boetius, Antje		of gut content
38	Ice algae composition	Ice algae comp		Boetius, Antje		in sediment/gut
39	Ice algae, deposition of carbon	Ice algae depos C	g/m²	Boetius, Antje	Calculated
40	Elevation of event	Elevation	m

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

255 data points

Data

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

1 Event	2 Event 2	3 Date/Time	4 Latitude	5 Longitude	6 Ice cov [%] (Sea ice observation according...)	7 Ice thick min [m] (Sea ice observation according...)	8 Ice thick max [m] (Sea ice observation according...)	9 Ice type (Sea ice observation according...)	10 Melt pond cov [%] (Sea ice observation according...)	11 Drift [kn] (Meteorological observation ac...)	12 Drift std dev [±] (Meteorological observation ac...)	13 SWD [W/m²] (Net radiometer, Kipp & Zonen,...)	14 SWD std dev [W/m²] (Net radiometer, Kipp & Zonen,...)	15 PAR [W/m²] (under ice, Net radiometer, Ki...)	16 TTT [°C] (Thermometer)	17 Temp [°C] (at 5m water depth, Thermosali...)	18 Sal (at 5 m water depth, Thermosal...)	19 MLD [m]	20 MWD [m] (Estimates based on seasonal i...)	21 [NO3]- [µmol/l] (in 0-2 m water depth under ice)	22 N/Si (in 0-2 m water depth, Calculated)	23 N/P (in 0-2 m water depth, Calculated)	24 PP C area [g/m²/day] (in 0-1 m water depth under ic...)	25 PP C area [g/m²/a] (Estimates based on seasonal i...)	26 Diatoms [%] (Estimates based on seasonal i...)	27 Algal cov [%] (Sub-ice)	28 Ice algae comp (Diverse algae included in var...)	29 Algal cov [%] (at seafloor; * = Estimates in...)	30 Algal cov std dev [±]	31 Pigm conc [µg/cm³] (top 1 cm sediment layer)	32 Pigm conc std dev [±]	33 Chl a/CPE [%]	34 Megaf biom wm [g/m²]	35 CPE gut [µg/cm³]	36 CPE gut std dev [±]	37 Chl a/CPE [%] (of gut content)	38 Ice algae comp (in sediment/gut)	39 Ice algae depos C [g/m²] (Calculated)	40 Elevation [m]
PS80/224-1	Ice station #1	2012-08-09	84.0505	31.1138	80	1.0	1.2	First-year ice	40	0.14	0.1	150	93	33	-1.5	-1.5	33.0	15	0.5	2.89	0.33	0.10	0.062	16	40	0.04	diverse algae	0.00		0.7	0.1	10	0.42					0.0	-4013
PS80/237-1	Ice station #2	2012-08-14	83.9865	78.1033	80	1.2	2.0	First-year ice	20	0.35	0.2	97	59	5	-1.2	-1.5	33.2	21	0.7	3.08	0.50	0.10	0.009	7	28	0.19	diverse algae	0.03	0.04	1.4	0.3	17	1.01					0.5	-3484
PS80/255-1	Ice station #3	2012-08-20	82.6707	109.5895	70	0.7	1.2	First-year ice	40	0.55	0.2	60	38	9	0.3	-1.6	32.8	16	0.7	0.29	3.33	0.50	0.019	12	32	<0.01	Melosira	1.30	0.40	1.0	0.3	22	3.36	130	20	43	Melosira	20.0	-3569
PS80/277-1	Ice station #4	2012-08-25	82.8825	130.1295	80	0.7	0.9	First-year ice	50	0.24	0.1	56	45		-0.3	-1.5	31.2	23	1.1	0.42	10.00	0.50	0.036	7	24			*0.33	0.40	1.0	0.4	22	1.07	41	15	49	Melosira + diverse algae	5.0	-4161
PS80/323-1	Ice station #5	2012-09-04	81.9255	131.1287	60	1.2	1.7	First-year ice	10	0.26	0.1	62	76	3	-3.3	-1.5	30.6	20	2.3	0.10	33.33	1.00	0.039	9		0.04	Melosira	*0.50	0.20	0.7	0.2	18	3.19	30	2	66	Melosira + diverse algae	7.0	-4031
PS80/335-1	Ice station #6	2012-09-07	85.1018	122.2453	50	0.9	1.7	First-year ice/Multi-year ice	30	0.29	0.2	26	23	2	-1.6	-1.5	30.3	20	2.2	0.08	50.00	2.50	0.010	10		0.03	Melosira	*0.80	0.60	0.5	0.1	14	5.49	3	1	22	Melosira + diverse algae	11.0	-4354
PS80/349-1	Ice station #7	2012-09-18	87.9335	61.2173	100	1.2	1.8	First-year ice/Multi-year ice	20	0.01	0.0	11	6	<1	-3.9	-1.8	33.1	31	0.8	0.97	50.00	3.33	0.005	16	41	0.55	Melosira	2.20	0.70	0.6	0.1	14	3.46	48	12	51	Melosira	32.0	-4380
PS80/360-1	Ice station #8	2012-09-22	88.8277	58.8635	100	1.1	1.8	First-year ice/Multi-year ice	20	0.17	0.1	5	3	<1	-10.1	-1.7	32.9	30	0.9	0.49	3.33	0.50	0.004	15	40	0.13	Melosira	10.40	0.50	0.8	0.5	14	0.33				Melosira + diverse algae	156.0	-4374