Dataset Available Cold Storage

Near-surface water column LIDAR data collected aboard the R/V Pelican cruises PE16-19A and PE16-19B in the northern Gulf of Mexico from 2016-03-29 to 2016-04-12

Authors: Stephanie Anderson
Published On: May 02 2019 21:42 UTC
DOI: https://doi.org/10.7266/N76T0K3X
UDI: R4.x260.000:0084
Cold Storage Files

Number of Cold Storage Files:
1818

Cold Storage File Size:
70.34 GB

File Format:
nc (NetCDF)

Project Information

Funded By:
Gulf of Mexico Research Initiative

Funding Cycle:
RFP-IV

Research Group:
Consortium for Oil Spill Exposure Pathways in Coastal River-Dominated Ecosystems (CONCORDE)

Point of Contact

Jeffrey (Jeff) Book
Naval Research Laboratory at Stennis Space Center / Ocean Sciences Branch
jeff.book@nrlssc.navy.mil

Data Collection Period
2016-03-29
to
2016-04-12
Theme keywords

LIDAR, co-linear polarization, cross-linear polarization, bio-optical layers

ISO 19115-2 Metadata
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Abstract:

This dataset present bio-optical properties data of the near-surface water column collected using a shipboard cross-linear polarized Light Detection and Ranging (LIDAR) system operated off the bow of the R/V Pelican cruises PE16-19A and PE16-19B in the northern Gulf of Mexico from 2016-03-29 to 2016-04-12. The LIDAR system measured the near-surface optical cross-linear polarized backscatter. Along-track mapping of the LIDAR was used to characterize the spatial scales of the plumes and sub-surface layers created by particles. The LIDAR operates at a wavelength of 532 nm and penetrates to a depth that is typically between 25 - 40 m, depending on water turbidity. The LIDAR system used was known as the shipboard LIDAR optical profiler (SLOP). The data was collected during the Spring CONCORDE field campaign aboard the R/V Pelican, which was divided in two cruises (PE16-19A and PE16-19B) led by chief scientists Dr. Stephan Howden and Dr. James Moum. Additional information for these cruises can be found in the R2R repository links: https://www.rvdata.us/search/cruise/PE16-19A and https://www.rvdata.us/search/cruise/PE16-19B.

Suggested Citation:

Stephanie Anderson. 2019. Near-surface water column LIDAR data collected aboard the R/V Pelican cruises PE16-19A and PE16-19B in the northern Gulf of Mexico from 2016-03-29 to 2016-04-12. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N76T0K3X

Purpose:

To capture bio-optical layers in the upper portion of the water column.

Data Parameters and Units:

EPOCHTIME (epoch second of LIDAR shot, 'epoch seconds from 1970,01,01', UTC), LATITUDE (GPS latitude in decimal 'degrees'), LONGITUDE (GPS longitude in decimal 'degrees'), DEPTH (water depth 'm', meters), WATTS (LIDAR waveform in 'watts').

Methods:

LIDAR waveform data was processed from the raw counts from two linear receivers (Rx3: linear vertical and Rx4: linear horizontal) and four linear vertical transmitters (EOM1, EOM2, EOM4, EOM0). Processing included conversion of digitizer counts to volts, fixed pattern noise correction, removal of baseline overshoot, corrections for PMT gain differences and large signal compression, and R-squared losses.

Individual Files: