Description
This data set includes tower-based measurements of ocean wave slope fields from visible-band polarimetry using a Polaris Pyxis Mono VIS polarimetric camera. The data here include wave slope fields at 30 frames per second temporal resolution and mm-scale spatial resolution over a ~2 m x 2 m area of ocean surface observed off the Air-Sea Interaction Tower (ASIT; 41°20.1950'N, 70°33.3865'W). Measurements were taken over the period from October 2019 through January 2020. Surface slopes are along two dimensions: along-look and cross-look orientations of the camera. Data was acquired for 10 minutes per hour, 8 hours per day, and each data file (netCDF-4) captures one of the 10-minute segments. Note that data files are large, 142 GB each.
Data were collected as part of a pre-pilot campaign for the S-MODE (Submesoscale Ocean Dynamics Experiment) project. The polarimetric slope sensing (PSS) technique of Zappa et al. [2008] allows one to reconstruct the water surface slope field by measuring the polarization state of reflected light at each image pixel, allowing for surface resolutions of order 1 mm with no in-water measurement component. From these data one is able to compute water surface slope variance, wave directional spreading, and the near-surface current profile.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| 22 | Thumbnail | https://podaac.jpl.nasa.gov/Podaac/thumbnails/SMODE_L1_ASIT_WAVE_SLOPE_POLARIMETRY_V1.jpg | |
| 21 | Journal publication describing the measurement technique | https://doi.org/10.1088/0957-0233/19/5/055503 | |
| 21 | Browse granule search results in Earthdata Search | https://search.earthdata.nasa.gov/search/granules?p=C2162104652-POCLOUD | |
| 21 | Search results for publications that cite this dataset by its DOI. | https://scholar.google.com/scholar?q=10.5067%2FSMODE-WSLOPE | |
| 21 | Data Use and Citation Policy | https://podaac.jpl.nasa.gov/CitingPODAAC | |
| 21 | PO.DAAC Landing Page for the S-MODE Project (field campaign, instruments, available data sets, cruise reports, other resources/links related to the project as a whole) | http://podaac.jpl.nasa.gov/s-mode | |
| 33 | Read me file giving a short description of the instrument, measurements, and file contents. | https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/s-mode/docs/NASA_S-MODE_ASIT-Wave_Slope_Polarimetry_Readme.pdf | |
| 21 | Browse and download granules over HTTPS using the virtual directories | https://cmr.earthdata.nasa.gov/virtual-directory/collections/C2162104652-POCLOUD |
Tags
- oceans
- sea-surface-slope
- earth-science