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Chandler, David M; Mackie, Shona (2019): Observations of winter marine productivity in an ice-covered fjord, West Greenland [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.906332

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Abstract:
These data are the first observations of Arctic winter microbial activity under sea ice in a west Greenland fjord (Lillefjord, 70°30'N 50°40'W), and are based on changes in dissolved oxygen content in light and dark in-situ incubations. The results can be used to calculate net community productivity, respiration and photosynthesis rates under the ice. Data were collected at two fully ice-covered sites during February 2013, shortly after the end of the polar night. This is the results summary. Methods are described in the 'Method.txt' file. Results for individual bottles in each experiment are provided in doi:10.1594/PANGAEA.912677.
Keyword(s):
Greenland; marine; productivity; Sea ice
Other version:
Chandler, David M; Mackie, Shona (2020): Observations of winter marine microbial activity in an ice-covered fjord, West Greenland: individual observations. PANGAEA, https://doi.org/10.1594/PANGAEA.912677
Further details:
Observations of winter marine productivity in an ice-covered fjord, West Greenland: methods (Method.txt)
Coverage:
Latitude: 70.500000 * Longitude: -50.670000
Date/Time Start: 2013-02-06T17:25:00 * Date/Time End: 2013-03-04T20:45:00
Event(s):
Lillefjord_H1 (Lillefjord, Fjord edge)  * Latitude: 70.500000 * Longitude: -50.670000 * Date/Time Start: 2013-02-06T17:25:00 * Date/Time End: 2013-03-04T20:45:00 * Method/Device: Incubation, in situ productivity (ISPROD) * Comment: water 5-10 m deep
Lillefjord_H2 (Lillefjord, Fjord centre)  * Latitude: 70.500000 * Longitude: -50.670000 * Date/Time Start: 2013-02-10T17:40:00 * Date/Time End: 2013-02-28T18:22:00 * Method/Device: Incubation, in situ productivity (ISPROD) * Comment: water ~300 m deep
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Event labelEventChandler, David M
2 DATE/TIMEDate/TimeChandler, David MGeocode – Start
3 CommentCommentChandler, David MDate/time
4 LocationLocationChandler, David MIce hole
5 Experiment durationExp durationdaysChandler, David M
6 Oxygen, dissolvedDOmg/lChandler, David MStart mean
7 Oxygen, dissolved, errorDO e±Chandler, David MStart mean [mg/l]
8 Bottle numberBottle#Chandler, David MLight: biological oxygen demand (BOD) bottles, number
9 Oxygen, dissolved, changeΔDOmg/l/dayChandler, David MLight
10 Oxygen, dissolved, errorDO e±Chandler, David MdO2 Light error [mg/l/d]
11 Bottle numberBottle#Chandler, David MDark: biological oxygen demand (BOD) bottles, number
12 Oxygen, dissolved, changeΔDOmg/l/dayChandler, David MDark
13 Oxygen, dissolved, errorDO e±Chandler, David MdO2 Dark error [mg/l/d]
14 CommentCommentChandler, David MNotes
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
167 data points

Data

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

1 
Event		2 
Date/Time
(Start)		3 
Comment
(Date/time)		4 
Location
(Ice hole)		5 
Exp duration [days]		6 
DO [mg/l]
(Start mean)		7 
DO e [±]
(Start mean [mg/l])		8 
Bottle [#]
(Light: biological oxygen dema...)		9 
ΔDO [mg/l/day]
(Light)		10 
DO e [±]
(dO2 Light error [mg/l/d])		11 
Bottle [#]
(Dark: biological oxygen deman...)		12 
ΔDO [mg/l/day]
(Dark)		13 
DO e [±]
(dO2 Dark error [mg/l/d])		14 
Comment
(Notes)
Lillefjord_H1 2013-02-06T17:25Fjord edge1.012.000.0640.170.244-0.140.14Cloudy throughout experiment.
Lillefjord_H12013-02-08T17:57Fjord edge1.012.440.254-0.740.904-0.940.40Cloudy throughout experiment. Calving event caused risk of ice breakup at experiment start, before all bottles filled.
Lillefjord_H12013-02-13T18:30Fjord edge1.012.310.045-0.080.074-0.170.24Clear at start but overcast by mid-morning of 14th and cloud steadily increased all day.
Lillefjord_H12013-02-21T19:47Fjord edge4.012.370.122-0.120.0500.000.0020-30 mm fresh snow. Clear sky.
Lillefjord_H12013-03-04T20:45Fjord edge2.012.120.063-0.080.032-0.020.10Thin covering of wind scoured snow. Clear sky.
Lillefjord_H1OverallFjord edge9.012.240.0818-0.170.1914-0.360.24Mean for all fjord edge experiments
Lillefjord_H2 2013-02-10T17:40Fjord centre1.112.130.155-0.260.304-0.380.22Clear on 10th. Partly cloudy on 11th.
Lillefjord_H22013-02-12T10:03Fjord centre1.012.240.135-0.080.075-0.170.19Thin layer of snow. Clear morning on 12th, cloudy afternoon.
Lillefjord_H22013-02-15T17:45Fjord centre1.012.380.0550.030.0850.090.11Thin layer of snow.
Lillefjord_H22013-02-17T18:38Fjord centre1.112.320.055-0.010.0850.080.215-10 mm fresh snow. Overcast on 17th. Cloudy but bright on 18th.
Lillefjord_H22013-02-19T19:23Fjord centre1.112.520.085-0.120.105-0.080.1620-30 mm snow. High cloud and sunshine in morning of 20th, then increasing cloud.
Lillefjord_H22013-02-24T20:36Fjord centre0.912.580.012-0.100.0300.000.0030-30 mm snow. Clear sky.
Lillefjord_H22013-02-25T21:29Fjord centre1.812.610.202-0.270.033-0.320.2110-20 mm snow. Clear sky on 25th and 26th. Cloud increasing on 27th.
Lillefjord_H22013-02-28T18:22Fjord centre2.112.490.145-0.100.105-0.030.1710-20 mm snow, partially melted on 28th. Overcast 28th February and 1st March, snow showers on 1st. Clear on 2nd.
Lillefjord_H2OverallFjord centre10.112.380.0534-0.100.0732-0.090.07Mean for all fjord centre experiments