clouddrift.datasets.yomaha#
- clouddrift.datasets.yomaha(decode_times: bool = True) Dataset[source]#
Returns the YoMaHa dataset as a ragged array Xarray dataset.
The function will first look for the ragged-array dataset on the local filesystem. If it is not found, the dataset will be downloaded using the corresponding adapter function and stored for later access. The upstream data is available at http://apdrc.soest.hawaii.edu/projects/yomaha/.
Parameters#
- decode_timesbool, optional
If True, decode the time coordinate into a datetime object. If False, the time coordinate will be an int64 or float64 array of increments since the origin time indicated in the units attribute. Default is True.
Returns#
- xarray.Dataset
YoMaHa’07 dataset as a ragged array
Examples#
>>> from clouddrift.datasets import yomaha >>> ds = yomaha() >>> ds <xarray.Dataset> Dimensions: (obs: 1926743, traj: 12196) Coordinates: time_d (obs) datetime64[ns] ... time_s (obs) datetime64[ns] ... time_lp (obs) datetime64[ns] ... time_lc (obs) datetime64[ns] ... id (traj) int64 ... Dimensions without coordinates: obs, traj Data variables: (12/27) lon_d (obs) float64 ... lat_d (obs) float64 ... pres_d (obs) float32 ... ve_d (obs) float32 ... vn_d (obs) float32 ... err_ve_d (obs) float32 ... ... ... cycle (obs) int64 ... time_inv (obs) int64 ... rowsize (traj) int64 ... wmo_id (traj) int64 ... dac_id (traj) int64 ... float_type (traj) int64 ... Attributes: title: YoMaHa'07: Velocity data assessed from trajectories of A... history: Dataset updated on Tue Jun 28 03:14:34 HST 2022 date_created: 2023-12-08T00:52:08.478075 publisher_name: Asia-Pacific Data Research Center publisher_url: http://apdrc.soest.hawaii.edu/index.php license: Creative Commons Attribution 4.0 International License..
Reference#
Lebedev, K. V., Yoshinari, H., Maximenko, N. A., & Hacker, P. W. (2007). Velocity data assessed from trajectories of Argo floats at parking level and at the sea surface. IPRC Technical Note, 4(2), 1-16.