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Dataset Overview | National Centers for Environmental Information (NCEI)

Synoptic measurements of subsurface phytoplankton layers collected from Fish Lidar, Oceanic, Experimental (FLOE) Light Detection and Ranging (LIDAR) from aircraft in Chukchi Sea and Beaufort Sea from 2014-07-17 to 2014-07-29 (NCEI Accession 0128217)

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In July 2014, Fish Lidar, Oceanic, Experimental (FLOE) Light Detection and Ranging (LIDAR) was installed in a NOAA Twin Otter to make the first synoptic measurements of subsurface phytoplankton layers associated with the retreating ice in the Arctic Ocean. We made a series of flights out of Barrow, Alaska over the Chukchi Sea to the west or the Beaufort Sea to the East. Our objectives were to see if thin plankton layers exist below the surface in the Arctic and how they might be affected by retreating ice. We have observed layers associated with stratification in other parts of the ocean [Churnside and Donaghay, 2009], and expected to find them in the Marginal Ice Zone as well. The LIDAR was able to measure the layer characteristics and the fractional ice cover simultaneously. These layers, which are not adequately captured in satellite data, will influence primary productivity, secondary productivity, fisheries recruitment, and carbon export to the benthos.
  • Cite as: Churnside, James; Marchbanks, Richard (2015). Synoptic measurements of subsurface phytoplankton layers collected from Fish Lidar, Oceanic, Experimental (FLOE) Light Detection and Ranging (LIDAR) from aircraft in Chukchi Sea and Beaufort Sea from 2014-07-17 to 2014-07-29 (NCEI Accession 0128217). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0128217. Accessed [date].
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Distributor NOAA National Centers for Environmental Information
+1-301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Time Period 2014-07-17 to 2014-07-29
Spatial Bounding Box Coordinates
West: -165.5
East: -143
South: 70
North: 74
Spatial Coverage Map
General Documentation
Publication Dates
  • publication: 2015-06-02
  • revision: 2015-06-03
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed
Supplemental Information
Submission Package ID: XU779A
Purpose This dataset is available to the public for a wide variety of uses including scientific research and analysis.
Use Limitations
  • accessLevel: Public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Dataset Citation
  • Cite as: Churnside, James; Marchbanks, Richard (2015). Synoptic measurements of subsurface phytoplankton layers collected from Fish Lidar, Oceanic, Experimental (FLOE) Light Detection and Ranging (LIDAR) from aircraft in Chukchi Sea and Beaufort Sea from 2014-07-17 to 2014-07-29 (NCEI Accession 0128217). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0128217. Accessed [date].
Cited Authors
Contributors
Resource Providers
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Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Global Change Master Directory (GCMD) Science Keywords
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS Global Change Master Directory (GCMD) Data Center Keywords
Platform keywords NODC PLATFORM NAMES THESAURUS
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Churnside, James; Marchbanks, Richard (2015). Synoptic measurements of subsurface phytoplankton layers collected from Fish Lidar, Oceanic, Experimental (FLOE) Light Detection and Ranging (LIDAR) from aircraft in Chukchi Sea and Beaufort Sea from 2014-07-17 to 2014-07-29 (NCEI Accession 0128217). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0128217. Accessed [date].
Access Constraints
  • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Fees
  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: dataset
Processing Steps
  • 2015-06-02T14:03:13Z - NCEI Accession 0128217 v1.1 was published.
  • 2015-06-03T12:59:59Z - NCEI Accession 0128217 was revised and v2.2 was published.
    Rationale: Updates were received for this dataset. These updates were copied into the data/0-data/ directory of this accession. These updates may provide additional files or replace obsolete files. This version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Data Type: Lidar signal (measured); Units: amp; Observation Type: other; Sampling Instrument: Oceanographic lidar; Sampling and Analyzing Method: Lidar data were collected at a flight altitude of 300 m and a speed of 60 m/sec . Lidar pulse repetition rate was 30 Hz. The system and operation is described further in the references. For the first 4 days (17-23 July) both receiver channels were set to record the cross polarized return. After that, one channel recorded the cross polarized return and the other the co polarized return. Analysis was by visual inspection of the raw data. Ice was initially identified by the presence of a saturated lidar return, and marked with a flag in the raw data files. This was verified by visual inspection. Plankton layers were identified by visual inspection, and also marked with a flag in the raw data files. At the same time, a separate file was created to include the shot number and depth at which each identified layer started and ended.; Data Quality Information: In post processing, each lidar shot was checked for receiver saturation, which indicates ice. Data were visually inspected for fog, land, and other bad data shots. Flags were set to 1 (binary, not ASCII) in the presence of ice (byte 2150), fog (byte 2151), land (byte 2152), missing data (byte 2155), and bad data, including when the aircraft was outside the altitude range (byte 2153). Lidar profiles were not used if any of these flags were set to 1.
Lineage information for: repository
Processing Steps
  • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
Acquisition Information (collection)
Instrument
  • LIDAR
Platform
  • AIRCRAFT
Last Modified: 2022-07-01T18:11:10Z
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