Harmonic Constants for Baroclinic Tide Prediction

(BAROCLINIC_HRET14)

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Data Access
Variables
Documentation
Citation

Version	14
Processing Level	4
Start/Stop Date	1993-Jan-01 to 2021-Jan-01
Short Name	BAROCLINIC_HRET14
Description	This dataset of Harmonic Constants for Baroclinic Tide Prediction was produced by Edward Zaron (Oregon State University) and Shane Elipot (University of Miami). It provides sea surface height and ocean surface currents associated with the predictable astronomical tide at the M2, S2, N2, K1, and O1 frequencies. The tidal harmonic constants, in-phase and quadrature with respect to the equilibrium potential, are provided on a latitude/longitude at 1/20-deg resolution. Using the software available at the Github repository, the dataset can be used to predict baroclinic tidal sea surface height and surface ocean currents at arbitrary time and location throughout the world oceans. The harmonic constants were estimated within the time period from 1993 to 2021 and incorporate roughly 30 years of multi-satellite altimeter data and 20 years of data from drifting buoys. The observations were combined with a kinematic wave model and the internal wave polarization relations to prepare uniformly gridded estimates from the sparse and irregular data sampling. These files may be used by the altimeter community to compute corrections intended to remove baroclinic tidal variability from sea level anomaly observations. Researchers with an interest in ocean surface currents may also use these data to predict baroclinic tidal surface currents. Such information may be used to plan observational campaigns or optimize the design of future surface current mapping satellite missions. This dataset is funded by NASA SWOT Science Team award #80NSSC21K0346 and NSF Physical Oceanography Program award #1850961. The software to make baroclinic tidal calculations using this dataset is regularly updated at the provided Github link, and an archived snapshot of the software is also provided in the documentation. The harmonic constants and prediction software may be updated every few years as additional data for mapping the tides becomes available.
DOI	10.5067/BHRET-HUV14
Measurement	OCEANS > TIDES > TIDAL COMPONENTS
Platform/Sensor
Data Provider	Publisher: PO.DAAC Creator: Zaron, E. D. and Elipot, S. Release Place: CA, USA Release Date: 2024-May-16
Format	netCDF-4
Keyword(s)	"High Resolution Empirical Tide", "HRET"

Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov

Coverage North Bounding Coordinate: 90 degrees South Bounding Coordinate: -90 degrees West Bounding Coordinate: -180 degrees East Bounding Coordinate: 180 degrees Time Span: 1993-Jan-01 to 2021-Jan-01

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https://cmr.earthdata.nasa.gov/virtual-directory/collections/C2935657850-POCLOUD
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https://search.earthdata.nasa.gov/search/granules?p=C2935657850-POCLOUD
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TOOLS AND SERVICES
Data Subscriber

Name	Long Name	Unit
crs	coordinate reference system
K1c	K1 harmonic constant, cosine coefficient	meter
K1c_altimeter_only	K1 harmonic constant, cosine coefficient	meter
K1c_drifter_only	K1 harmonic constant, cosine coefficient	meter
K1s	K1 harmonic constant, sine coefficient	meter
K1s_altimeter_only	K1 harmonic constant, sine coefficient	meter
K1s_drifter_only	K1 harmonic constant, sine coefficient	meter
lat	latitude	degrees_north
lon	longitude	degrees_east
M2c	M2 harmonic constant, cosine coefficient	meter
M2c_altimeter_only	M2 harmonic constant, cosine coefficient	meter
M2c_drifter_only	M2 harmonic constant, cosine coefficient	meter
M2s	M2 harmonic constant, sine coefficient	meter
M2s_altimeter_only	M2 harmonic constant, sine coefficient	meter
M2s_drifter_only	M2 harmonic constant, sine coefficient	meter
N2c	N2 harmonic constant, cosine coefficient	meter
N2c_altimeter_only	N2 harmonic constant, cosine coefficient	meter
N2c_drifter_only	N2 harmonic constant, cosine coefficient	meter
N2s	N2 harmonic constant, sine coefficient	meter
N2s_altimeter_only	N2 harmonic constant, sine coefficient	meter
N2s_drifter_only	N2 harmonic constant, sine coefficient	meter
O1c	O1 harmonic constant, cosine coefficient	meter
O1c_altimeter_only	O1 harmonic constant, cosine coefficient	meter
O1c_drifter_only	O1 harmonic constant, cosine coefficient	meter
O1s	O1 harmonic constant, sine coefficient	meter
O1s_altimeter_only	O1 harmonic constant, sine coefficient	meter
O1s_drifter_only	O1 harmonic constant, sine coefficient	meter
quality_level	quality level of HRET pixel
S2c	S2 harmonic constant, cosine coefficient	meter
S2c_altimeter_only	S2 harmonic constant, cosine coefficient	meter
S2c_drifter_only	S2 harmonic constant, cosine coefficient	meter
S2s	S2 harmonic constant, sine coefficient	meter
S2s_altimeter_only	S2 harmonic constant, sine coefficient	meter
S2s_drifter_only	S2 harmonic constant, sine coefficient	meter
uK1c	K1 eastward velocity harmonic constant, cosine coefficient	meter per second
uK1c_altimeter_only	K1 eastward velocity harmonic constant, cosine coefficient	meter per second
uK1c_drifter_only	uK1c_drifter_only	m/s
uK1s	K1 eastward velocity harmonic constant, sine coefficient	meter per second
uK1s_altimeter_only	K1 eastward velocity harmonic constant, sine coefficient	meter per second
uK1s_drifter_only	K1 eastward velocity harmonic constant, sine coefficient	meter per second
uM2c	M2 eastward velocity harmonic constant, cosine coefficient	meter per second
uM2c_altimeter_only	M2 eastward velocity harmonic constant, cosine coefficient	meter per second
uM2c_drifter_only	uM2c_drifter_only	m/s
uM2s	M2 eastward velocity harmonic constant, sine coefficient	meter per second
uM2s_altimeter_only	M2 eastward velocity harmonic constant, sine coefficient	meter per second
uM2s_drifter_only	M2 eastward velocity harmonic constant, sine coefficient	meter per second
uN2c	N2 eastward velocity harmonic constant, cosine coefficient	meter per second
uN2c_altimeter_only	N2 eastward velocity harmonic constant, cosine coefficient	meter per second
uN2c_drifter_only	uN2c_drifter_only	m/s
uN2s	N2 eastward velocity harmonic constant, sine coefficient	meter per second
uN2s_altimeter_only	N2 eastward velocity harmonic constant, sine coefficient	meter per second
uN2s_drifter_only	N2 eastward velocity harmonic constant, sine coefficient	meter per second
unit	unit
uO1c	O1 eastward velocity harmonic constant, cosine coefficient	meter per second
uO1c_altimeter_only	O1 eastward velocity harmonic constant, cosine coefficient	meter per second
uO1c_drifter_only	uO1c_drifter_only	m/s
uO1s	O1 eastward velocity harmonic constant, sine coefficient	meter per second
uO1s_altimeter_only	O1 eastward velocity harmonic constant, sine coefficient	meter per second
uO1s_drifter_only	O1 eastward velocity harmonic constant, sine coefficient	meter per second
uS2c	S2 eastward velocity harmonic constant, cosine coefficient	meter per second
uS2c_altimeter_only	S2 eastward velocity harmonic constant, cosine coefficient	meter per second
uS2c_drifter_only	uS2c_drifter_only	m/s
uS2s	S2 eastward velocity harmonic constant, sine coefficient	meter per second
uS2s_altimeter_only	S2 eastward velocity harmonic constant, sine coefficient	meter per second
uS2s_drifter_only	S2 eastward velocity harmonic constant, sine coefficient	meter per second
vK1c	K1 northward velocity harmonic constant, cosine coefficient	meter per second
vK1c_altimeter_only	K1 northward velocity harmonic constant, cosine coefficient	meter per second
vK1c_drifter_only	K1 northward velocity harmonic constant, cosine coefficient	meter per second
vK1s	K1 northward velocity harmonic constant, sine coefficient	meter per second
vK1s_altimeter_only	K1 northward velocity harmonic constant, sine coefficient	meter per second
vK1s_drifter_only	K1 northward velocity harmonic constant, sine coefficient	meter per second
vM2c	M2 northward velocity harmonic constant, cosine coefficient	meter per second
vM2c_altimeter_only	M2 northward velocity harmonic constant, cosine coefficient	meter per second
vM2c_drifter_only	M2 northward velocity harmonic constant, cosine coefficient	meter per second
vM2s	M2 northward velocity harmonic constant, sine coefficient	meter per second
vM2s_altimeter_only	M2 northward velocity harmonic constant, sine coefficient	meter per second
vM2s_drifter_only	M2 northward velocity harmonic constant, sine coefficient	meter per second
vN2c	N2 northward velocity harmonic constant, cosine coefficient	meter per second
vN2c_altimeter_only	N2 northward velocity harmonic constant, cosine coefficient	meter per second
vN2c_drifter_only	N2 northward velocity harmonic constant, cosine coefficient	meter per second
vN2s	N2 northward velocity harmonic constant, sine coefficient	meter per second
vN2s_altimeter_only	N2 northward velocity harmonic constant, sine coefficient	meter per second
vN2s_drifter_only	N2 northward velocity harmonic constant, sine coefficient	meter per second
vO1c	O1 northward velocity harmonic constant, cosine coefficient	meter per second
vO1c_altimeter_only	O1 northward velocity harmonic constant, cosine coefficient	meter per second
vO1c_drifter_only	O1 northward velocity harmonic constant, cosine coefficient	meter per second
vO1s	O1 northward velocity harmonic constant, sine coefficient	meter per second
vO1s_altimeter_only	O1 northward velocity harmonic constant, sine coefficient	meter per second
vO1s_drifter_only	O1 northward velocity harmonic constant, sine coefficient	meter per second
vS2c	S2 northward velocity harmonic constant, cosine coefficient	meter per second
vS2c_altimeter_only	S2 northward velocity harmonic constant, cosine coefficient	meter per second
vS2c_drifter_only	S2 northward velocity harmonic constant, cosine coefficient	meter per second
vS2s	S2 northward velocity harmonic constant, sine coefficient	meter per second
vS2s_altimeter_only	S2 northward velocity harmonic constant, sine coefficient	meter per second
vS2s_drifter_only	S2 northward velocity harmonic constant, sine coefficient	meter per second

SCIENCE DATA PRODUCT SOFTWARE DOCUMENTATION
https://github.com/ezaron/SMCE Tide prediction software associated with this dataset version and release
https://ingria.ceoas.oregonstate.edu/fossil/SMCE/dir?ci=tip Software maintained by the dataset author with sample datasets and ongoing updates
ALGORITHM DOCUMENTATION
https://doi.org/10.1175/JPO-D-18-0127.1 Algorithm Documentation
https://doi.org/10.1175/JTECH-D-23-0159.1 Algorithm Documentation
READ-ME
https://github.com/ezaron/SMCE/blob/master/README.md User's Guide
PRODUCT USAGE
https://github.com/ezaron/SMCE/blob/master/Example.ipynb Product Usage

Citation is critically important for dataset documentation and discovery. Please cite the data as follows, and cite the reference papers when it is appropriate.

Citation

Zaron, E. D. and Elipot, S.. 2024. Harmonic Constants for Baroclinic Tide Prediction. Ver. 14. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/BHRET-HUV14

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For more information see Data Citations and Acknowledgments.

Journal Reference

E. D. Zaron. 2019. Baroclinic tidal sea level from exact-repeat mission altimetry, J. Phys. Oceanogr., 49, 1. https://doi.org/10.1175/JPO-D-18-0127.1

E. D. Zaron and S. Elipot. 2024. Estimates of Baroclinic Tidal Sea Level and Currents from Lagrangian Drifters and Satellite Altimetry, Journal of Atmospheric and Oceanic Technology. https://doi.org/10.1175/JTECH-D-23-0159.1

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COMPLETE

Short Name:

BAROCLINIC_HRET14

Collection Concept ID:

C2935657850-POCLOUD

Spatial Coverage:

N: 90°

S: -90°

E: 180°

W: -180°

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Capabilities:

PO.DAAC

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Harmonic Constants for Baroclinic Tide Prediction

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