Constant current

from datetime import datetime, timedelta
from opendrift.models.oceandrift import OceanDrift

o = OceanDrift(loglevel=20)  # Set loglevel to 0 for debug information

15:51:14 INFO    opendrift:513: OpenDriftSimulation initialised (version 1.14.2 / v1.14.2-82-g86a40e4)

Adding no input models, but instead constant northwards current of 1 m/s

o.set_config('environment:fallback:x_sea_water_velocity', 0)
o.set_config('environment:fallback:y_sea_water_velocity', 1)
o.set_config('environment:fallback:land_binary_mask', 0)

Seed elements at defined position and time

o.seed_elements(lon=4.0, lat=60.0, radius=5000, number=100,
                time=datetime(2015, 9, 22, 6, 0, 0))

15:51:14 INFO    opendrift.models.basemodel.environment:206: Adding a global landmask from GSHHG
15:51:17 INFO    opendrift.models.basemodel.environment:229: Fallback values will be used for the following variables which have no readers:
15:51:17 INFO    opendrift.models.basemodel.environment:232:    x_sea_water_velocity: 0.000000
15:51:17 INFO    opendrift.models.basemodel.environment:232:    y_sea_water_velocity: 1.000000
15:51:17 INFO    opendrift.models.basemodel.environment:232:    sea_surface_height: 0.000000
15:51:17 INFO    opendrift.models.basemodel.environment:232:    x_wind: 0.000000
15:51:17 INFO    opendrift.models.basemodel.environment:232:    y_wind: 0.000000
15:51:17 INFO    opendrift.models.basemodel.environment:232:    upward_sea_water_velocity: 0.000000
15:51:17 INFO    opendrift.models.basemodel.environment:232:    ocean_vertical_diffusivity: 0.000000
15:51:17 INFO    opendrift.models.basemodel.environment:232:    sea_surface_wave_significant_height: 0.000000
15:51:17 INFO    opendrift.models.basemodel.environment:232:    sea_surface_wave_stokes_drift_x_velocity: 0.000000
15:51:17 INFO    opendrift.models.basemodel.environment:232:    sea_surface_wave_stokes_drift_y_velocity: 0.000000
15:51:17 INFO    opendrift.models.basemodel.environment:232:    ocean_mixed_layer_thickness: 50.000000
15:51:17 INFO    opendrift.models.basemodel.environment:232:    sea_floor_depth_below_sea_level: 10000.000000

Running model for 50 hours

o.run(duration=timedelta(hours=50))

15:51:18 INFO    opendrift:1722: Skipping environment variable ocean_vertical_diffusivity because of condition ['drift:vertical_mixing', 'is', False]
15:51:18 INFO    opendrift:1722: Skipping environment variable ocean_mixed_layer_thickness because of condition ['drift:vertical_mixing', 'is', False]
15:51:18 INFO    opendrift:1732: Storing previous values of element property lon because of condition (('general:coastline_action', 'in', ['stranding', 'previous']), 'or', ('general:seafloor_action', 'in', ['previous']))
15:51:18 INFO    opendrift:1732: Storing previous values of element property lat because of condition (('general:coastline_action', 'in', ['stranding', 'previous']), 'or', ('general:seafloor_action', 'in', ['previous']))
15:51:18 INFO    opendrift:889: Using existing reader for land_binary_mask
15:51:18 INFO    opendrift:918: All points are in ocean
15:51:18 INFO    opendrift:2015: 2015-09-22 06:00:00 - step 1 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-22 07:00:00 - step 2 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-22 08:00:00 - step 3 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-22 09:00:00 - step 4 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-22 10:00:00 - step 5 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-22 11:00:00 - step 6 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-22 12:00:00 - step 7 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-22 13:00:00 - step 8 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-22 14:00:00 - step 9 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-22 15:00:00 - step 10 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-22 16:00:00 - step 11 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-22 17:00:00 - step 12 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-22 18:00:00 - step 13 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-22 19:00:00 - step 14 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-22 20:00:00 - step 15 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-22 21:00:00 - step 16 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-22 22:00:00 - step 17 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-22 23:00:00 - step 18 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 00:00:00 - step 19 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 01:00:00 - step 20 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 02:00:00 - step 21 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 03:00:00 - step 22 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 04:00:00 - step 23 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 05:00:00 - step 24 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 06:00:00 - step 25 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 07:00:00 - step 26 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 08:00:00 - step 27 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 09:00:00 - step 28 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 10:00:00 - step 29 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 11:00:00 - step 30 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 12:00:00 - step 31 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 13:00:00 - step 32 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 14:00:00 - step 33 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 15:00:00 - step 34 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 16:00:00 - step 35 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 17:00:00 - step 36 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 18:00:00 - step 37 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 19:00:00 - step 38 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 20:00:00 - step 39 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 21:00:00 - step 40 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 22:00:00 - step 41 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-23 23:00:00 - step 42 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-24 00:00:00 - step 43 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-24 01:00:00 - step 44 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-24 02:00:00 - step 45 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-24 03:00:00 - step 46 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-24 04:00:00 - step 47 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-24 05:00:00 - step 48 of 50 - 100 active elements (0 deactivated)
15:51:18 INFO    opendrift:2015: 2015-09-24 06:00:00 - step 49 of 50 - 100 active elements (0 deactivated)
15:51:19 INFO    opendrift:2015: 2015-09-24 07:00:00 - step 50 of 50 - 100 active elements (0 deactivated)

<xarray.Dataset> Size: 430kB
Dimensions:                                   (trajectory: 100, time: 51)
Coordinates:
  * trajectory                                (trajectory) int64 800B 0 1 ... 99
  * time                                      (time) datetime64[ns] 408B 2015...
Data variables: (12/21)
    status                                    (trajectory, time) float32 20kB ...
    moving                                    (trajectory, time) float32 20kB ...
    age_seconds                               (trajectory, time) float32 20kB ...
    origin_marker                             (trajectory, time) float32 20kB ...
    lon                                       (trajectory, time) float32 20kB ...
    lat                                       (trajectory, time) float32 20kB ...
    ...                                        ...
    upward_sea_water_velocity                 (trajectory, time) float32 20kB ...
    sea_surface_wave_significant_height       (trajectory, time) float32 20kB ...
    sea_surface_wave_stokes_drift_x_velocity  (trajectory, time) float32 20kB ...
    sea_surface_wave_stokes_drift_y_velocity  (trajectory, time) float32 20kB ...
    sea_floor_depth_below_sea_level           (trajectory, time) float32 20kB ...
    land_binary_mask                          (trajectory, time) float32 20kB ...
Attributes: (12/117)
    Conventions:                                                           CF...
    standard_name_vocabulary:                                              CF...
    featureType:                                                           tr...
    title:                                                                 Op...
    summary:                                                               Ou...
    keywords:                                                              tr...
    ...                                                                    ...
    geospatial_lon_units:                                                  de...
    geospatial_lon_resolution:                                             point
    runtime:                                                               0:...
    geospatial_vertical_min:                                               0.0
    geospatial_vertical_max:                                               0.0
    geospatial_vertical_positive:                                          up

xarray.Dataset

• Dimensions:
  • trajectory: 100
  • time: 51
• Coordinates: (2)
  • trajectory
    (trajectory)
    int64
    0 1 2 3 4 5 6 ... 94 95 96 97 98 99

    cf_role :

    trajectory_id

    dtype :

    <class 'numpy.int32'>

    array([ 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16, 17,
           18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
           36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53,
           54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71,
           72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89,
           90, 91, 92, 93, 94, 95, 96, 97, 98, 99])

  • time
    (time)
    datetime64[ns]
    2015-09-22T06:00:00 ... 2015-09-...

    standard_name :

    time

    long_name :

    time

    dtype :

    <class 'numpy.float64'>

    array(['2015-09-22T06:00:00.000000000', '2015-09-22T07:00:00.000000000',
           '2015-09-22T08:00:00.000000000', '2015-09-22T09:00:00.000000000',
           '2015-09-22T10:00:00.000000000', '2015-09-22T11:00:00.000000000',
           '2015-09-22T12:00:00.000000000', '2015-09-22T13:00:00.000000000',
           '2015-09-22T14:00:00.000000000', '2015-09-22T15:00:00.000000000',
           '2015-09-22T16:00:00.000000000', '2015-09-22T17:00:00.000000000',
           '2015-09-22T18:00:00.000000000', '2015-09-22T19:00:00.000000000',
           '2015-09-22T20:00:00.000000000', '2015-09-22T21:00:00.000000000',
           '2015-09-22T22:00:00.000000000', '2015-09-22T23:00:00.000000000',
           '2015-09-23T00:00:00.000000000', '2015-09-23T01:00:00.000000000',
           '2015-09-23T02:00:00.000000000', '2015-09-23T03:00:00.000000000',
           '2015-09-23T04:00:00.000000000', '2015-09-23T05:00:00.000000000',
           '2015-09-23T06:00:00.000000000', '2015-09-23T07:00:00.000000000',
           '2015-09-23T08:00:00.000000000', '2015-09-23T09:00:00.000000000',
           '2015-09-23T10:00:00.000000000', '2015-09-23T11:00:00.000000000',
           '2015-09-23T12:00:00.000000000', '2015-09-23T13:00:00.000000000',
           '2015-09-23T14:00:00.000000000', '2015-09-23T15:00:00.000000000',
           '2015-09-23T16:00:00.000000000', '2015-09-23T17:00:00.000000000',
           '2015-09-23T18:00:00.000000000', '2015-09-23T19:00:00.000000000',
           '2015-09-23T20:00:00.000000000', '2015-09-23T21:00:00.000000000',
           '2015-09-23T22:00:00.000000000', '2015-09-23T23:00:00.000000000',
           '2015-09-24T00:00:00.000000000', '2015-09-24T01:00:00.000000000',
           '2015-09-24T02:00:00.000000000', '2015-09-24T03:00:00.000000000',
           '2015-09-24T04:00:00.000000000', '2015-09-24T05:00:00.000000000',
           '2015-09-24T06:00:00.000000000', '2015-09-24T07:00:00.000000000',
           '2015-09-24T08:00:00.000000000'], dtype='datetime64[ns]')

• Data variables: (21)
  • status
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... 0.0 0.0 0.0 0.0

    dtype :

    <class 'numpy.int32'>

    valid_range :

    [0 0]

    flag_values :

    [0]

    flag_meanings :

    active

    array([[0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           ...,
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.]], shape=(100, 51), dtype=float32)

  • moving
    (trajectory, time)
    float32
    1.0 1.0 1.0 1.0 ... 1.0 1.0 1.0 1.0

    dtype :

    <class 'numpy.int32'>

    minval :

    1

    maxval :

    1

    array([[1., 1., 1., ..., 1., 1., 1.],
           [1., 1., 1., ..., 1., 1., 1.],
           [1., 1., 1., ..., 1., 1., 1.],
           ...,
           [1., 1., 1., ..., 1., 1., 1.],
           [1., 1., 1., ..., 1., 1., 1.],
           [1., 1., 1., ..., 1., 1., 1.]], shape=(100, 51), dtype=float32)

  • age_seconds
    (trajectory, time)
    float32
    0.0 3.6e+03 ... 1.764e+05 1.8e+05

    dtype :

    <class 'numpy.float32'>

    units :

    s

    minval :

    0.0

    maxval :

    180000.0

    array([[     0.,   3600.,   7200., ..., 172800., 176400., 180000.],
           [     0.,   3600.,   7200., ..., 172800., 176400., 180000.],
           [     0.,   3600.,   7200., ..., 172800., 176400., 180000.],
           ...,
           [     0.,   3600.,   7200., ..., 172800., 176400., 180000.],
           [     0.,   3600.,   7200., ..., 172800., 176400., 180000.],
           [     0.,   3600.,   7200., ..., 172800., 176400., 180000.]],
          shape=(100, 51), dtype=float32)

  • origin_marker
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... 0.0 0.0 0.0 0.0

    dtype :

    <class 'numpy.int32'>

    unit :

    description :

    An integer kept constant during the simulation. Different values may be used for different seedings, to separate elements during analysis. With GUI, only a single seeding is possible.

    flag_values :

    [0]

    flag_meanings :

    Seed_0

    minval :

    0

    maxval :

    0

    array([[0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           ...,
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.]], shape=(100, 51), dtype=float32)

  • lon
    (trajectory, time)
    float32
    4.158 4.158 4.158 ... 4.036 4.036

    dtype :

    <class 'numpy.float32'>

    units :

    degrees_east

    standard_name :

    longitude

    long_name :

    longitude

    axis :

    X

    minval :

    3.7711217

    maxval :

    4.2031913

    array([[4.158473 , 4.158473 , 4.158473 , ..., 4.158473 , 4.158473 ,
            4.158473 ],
           [4.035791 , 4.035791 , 4.035791 , ..., 4.035791 , 4.035791 ,
            4.035791 ],
           [4.0875497, 4.0875497, 4.0875497, ..., 4.0875497, 4.0875497,
            4.0875497],
           ...,
           [4.1602025, 4.1602025, 4.1602025, ..., 4.1602025, 4.1602025,
            4.1602025],
           [4.0114055, 4.0114055, 4.0114055, ..., 4.0114055, 4.0114055,
            4.0114055],
           [4.036086 , 4.036086 , 4.036086 , ..., 4.036086 , 4.036086 ,
            4.036086 ]], shape=(100, 51), dtype=float32)

  • lat
    (trajectory, time)
    float32
    60.08 60.12 60.15 ... 61.64 61.68

    dtype :

    <class 'numpy.float32'>

    units :

    degrees_north

    standard_name :

    latitude

    long_name :

    latitude

    axis :

    Y

    minval :

    59.900146

    maxval :

    61.72234

    array([[60.084415, 60.116726, 60.14904 , ..., 61.635212, 61.667515,
            61.699818],
           [59.93951 , 59.971825, 60.004135, ..., 61.490337, 61.522644,
            61.55495 ],
           [59.942955, 59.97527 , 60.00758 , ..., 61.493782, 61.52609 ,
            61.55839 ],
           ...,
           [60.03686 , 60.06917 , 60.101486, ..., 61.587666, 61.619972,
            61.652275],
           [60.09708 , 60.12939 , 60.161705, ..., 61.647873, 61.680176,
            61.712482],
           [60.059975, 60.092285, 60.1246  , ..., 61.610775, 61.643078,
            61.675385]], shape=(100, 51), dtype=float32)

  • z
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... 0.0 0.0 0.0 0.0

    dtype :

    <class 'numpy.float32'>

    units :

    m

    standard_name :

    z

    long_name :

    vertical position

    axis :

    Z

    positive :

    up

    minval :

    0.0

    maxval :

    0.0

    array([[0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           ...,
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.]], shape=(100, 51), dtype=float32)

  • wind_drift_factor
    (trajectory, time)
    float32
    0.02 0.02 0.02 ... 0.02 0.02 0.02

    dtype :

    <class 'numpy.float32'>

    units :

    1

    description :

    Elements at surface are moved with this fraction of the vind vector, in addition to currents and Stokes drift

    minval :

    0.02

    maxval :

    0.02

    array([[0.02, 0.02, 0.02, ..., 0.02, 0.02, 0.02],
           [0.02, 0.02, 0.02, ..., 0.02, 0.02, 0.02],
           [0.02, 0.02, 0.02, ..., 0.02, 0.02, 0.02],
           ...,
           [0.02, 0.02, 0.02, ..., 0.02, 0.02, 0.02],
           [0.02, 0.02, 0.02, ..., 0.02, 0.02, 0.02],
           [0.02, 0.02, 0.02, ..., 0.02, 0.02, 0.02]],
          shape=(100, 51), dtype=float32)

  • current_drift_factor
    (trajectory, time)
    float32
    1.0 1.0 1.0 1.0 ... 1.0 1.0 1.0 1.0

    dtype :

    <class 'numpy.float32'>

    units :

    1

    description :

    Elements are moved with this fraction of the current vector, in addition to currents and Stokes drift

    minval :

    1.0

    maxval :

    1.0

    array([[1., 1., 1., ..., 1., 1., 1.],
           [1., 1., 1., ..., 1., 1., 1.],
           [1., 1., 1., ..., 1., 1., 1.],
           ...,
           [1., 1., 1., ..., 1., 1., 1.],
           [1., 1., 1., ..., 1., 1., 1.],
           [1., 1., 1., ..., 1., 1., 1.]], shape=(100, 51), dtype=float32)

  • terminal_velocity
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... 0.0 0.0 0.0 0.0

    dtype :

    <class 'numpy.float32'>

    units :

    m/s

    description :

    Terminal rise/sinking velocity (buoyancy) in the ocean column

    minval :

    0.0

    maxval :

    0.0

    array([[0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           ...,
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.]], shape=(100, 51), dtype=float32)

  • x_sea_water_velocity
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... 0.0 0.0 0.0 0.0

    minval :

    0.0

    maxval :

    0.0

    array([[0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           ...,
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.]], shape=(100, 51), dtype=float32)

  • y_sea_water_velocity
    (trajectory, time)
    float32
    1.0 1.0 1.0 1.0 ... 1.0 1.0 1.0 1.0

    minval :

    1.0

    maxval :

    1.0

    array([[1., 1., 1., ..., 1., 1., 1.],
           [1., 1., 1., ..., 1., 1., 1.],
           [1., 1., 1., ..., 1., 1., 1.],
           ...,
           [1., 1., 1., ..., 1., 1., 1.],
           [1., 1., 1., ..., 1., 1., 1.],
           [1., 1., 1., ..., 1., 1., 1.]], shape=(100, 51), dtype=float32)

  • sea_surface_height
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... 0.0 0.0 0.0 0.0

    minval :

    0.0

    maxval :

    0.0

    array([[0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           ...,
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.]], shape=(100, 51), dtype=float32)

  • x_wind
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... 0.0 0.0 0.0 0.0

    minval :

    0.0

    maxval :

    0.0

    array([[0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           ...,
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.]], shape=(100, 51), dtype=float32)

  • y_wind
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... 0.0 0.0 0.0 0.0

    minval :

    0.0

    maxval :

    0.0

    array([[0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           ...,
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.]], shape=(100, 51), dtype=float32)

  • upward_sea_water_velocity
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... 0.0 0.0 0.0 0.0

    minval :

    0.0

    maxval :

    0.0

    array([[0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           ...,
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.]], shape=(100, 51), dtype=float32)

  • sea_surface_wave_significant_height
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... 0.0 0.0 0.0 0.0

    minval :

    0.0

    maxval :

    0.0

    array([[0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           ...,
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.]], shape=(100, 51), dtype=float32)

  • sea_surface_wave_stokes_drift_x_velocity
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... 0.0 0.0 0.0 0.0

    minval :

    0.0

    maxval :

    0.0

    array([[0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           ...,
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.]], shape=(100, 51), dtype=float32)

  • sea_surface_wave_stokes_drift_y_velocity
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... 0.0 0.0 0.0 0.0

    minval :

    0.0

    maxval :

    0.0

    array([[0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           ...,
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.]], shape=(100, 51), dtype=float32)

  • sea_floor_depth_below_sea_level
    (trajectory, time)
    float32
    1e+04 1e+04 1e+04 ... 1e+04 1e+04

    minval :

    10000.0

    maxval :

    10000.0

    array([[10000., 10000., 10000., ..., 10000., 10000., 10000.],
           [10000., 10000., 10000., ..., 10000., 10000., 10000.],
           [10000., 10000., 10000., ..., 10000., 10000., 10000.],
           ...,
           [10000., 10000., 10000., ..., 10000., 10000., 10000.],
           [10000., 10000., 10000., ..., 10000., 10000., 10000.],
           [10000., 10000., 10000., ..., 10000., 10000., 10000.]],
          shape=(100, 51), dtype=float32)

  • land_binary_mask
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... 0.0 0.0 0.0 0.0

    minval :

    0.0

    maxval :

    0.0

    array([[0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           ...,
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.],
           [0., 0., 0., ..., 0., 0., 0.]], shape=(100, 51), dtype=float32)

• Indexes: (2)
  • trajectory
    PandasIndex

    PandasIndex(Index([ 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16, 17,
           18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
           36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53,
           54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71,
           72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89,
           90, 91, 92, 93, 94, 95, 96, 97, 98, 99],
          dtype='int64', name='trajectory'))

  • time
    PandasIndex

    PandasIndex(DatetimeIndex(['2015-09-22 06:00:00', '2015-09-22 07:00:00',
                   '2015-09-22 08:00:00', '2015-09-22 09:00:00',
                   '2015-09-22 10:00:00', '2015-09-22 11:00:00',
                   '2015-09-22 12:00:00', '2015-09-22 13:00:00',
                   '2015-09-22 14:00:00', '2015-09-22 15:00:00',
                   '2015-09-22 16:00:00', '2015-09-22 17:00:00',
                   '2015-09-22 18:00:00', '2015-09-22 19:00:00',
                   '2015-09-22 20:00:00', '2015-09-22 21:00:00',
                   '2015-09-22 22:00:00', '2015-09-22 23:00:00',
                   '2015-09-23 00:00:00', '2015-09-23 01:00:00',
                   '2015-09-23 02:00:00', '2015-09-23 03:00:00',
                   '2015-09-23 04:00:00', '2015-09-23 05:00:00',
                   '2015-09-23 06:00:00', '2015-09-23 07:00:00',
                   '2015-09-23 08:00:00', '2015-09-23 09:00:00',
                   '2015-09-23 10:00:00', '2015-09-23 11:00:00',
                   '2015-09-23 12:00:00', '2015-09-23 13:00:00',
                   '2015-09-23 14:00:00', '2015-09-23 15:00:00',
                   '2015-09-23 16:00:00', '2015-09-23 17:00:00',
                   '2015-09-23 18:00:00', '2015-09-23 19:00:00',
                   '2015-09-23 20:00:00', '2015-09-23 21:00:00',
                   '2015-09-23 22:00:00', '2015-09-23 23:00:00',
                   '2015-09-24 00:00:00', '2015-09-24 01:00:00',
                   '2015-09-24 02:00:00', '2015-09-24 03:00:00',
                   '2015-09-24 04:00:00', '2015-09-24 05:00:00',
                   '2015-09-24 06:00:00', '2015-09-24 07:00:00',
                   '2015-09-24 08:00:00'],
                  dtype='datetime64[ns]', name='time', freq='h'))

• Attributes: (117)

  Conventions :

  CF-1.11, ACDD-1.3

  standard_name_vocabulary :

  CF Standard Name Table v85

  featureType :

  trajectory

  title :

  OpenDrift trajectory simulation

  summary :

  Output from simulation with OpenDrift framework

  keywords :

  trajectory, drift, lagrangian, simulation

  history :

  Created 2025-07-02 15:51:18.008686

  date_created :

  2025-07-02T15:51:18.008698

  source :

  Output from simulation with OpenDrift

  model_url :

  https://github.com/OpenDrift/opendrift

  opendrift_class :

  OceanDrift

  opendrift_module :

  opendrift.models.oceandrift

  readers :

  odict_keys(['global_landmask'])

  time_coverage_start :

  2015-09-22 06:00:00

  time_step_calculation :

  1:00:00

  time_step_output :

  1:00:00

  config_environment:constant:x_sea_water_velocity :

  None

  config_environment:fallback:x_sea_water_velocity :

  0.0

  config_environment:constant:y_sea_water_velocity :

  None

  config_environment:fallback:y_sea_water_velocity :

  1.0

  config_environment:constant:sea_surface_height :

  None

  config_environment:fallback:sea_surface_height :

  0

  config_environment:constant:x_wind :

  None

  config_environment:fallback:x_wind :

  0

  config_environment:constant:y_wind :

  None

  config_environment:fallback:y_wind :

  0

  config_environment:constant:upward_sea_water_velocity :

  None

  config_environment:fallback:upward_sea_water_velocity :

  0

  config_environment:constant:ocean_vertical_diffusivity :

  None

  config_environment:fallback:ocean_vertical_diffusivity :

  0

  config_environment:constant:sea_surface_wave_significant_height :

  None

  config_environment:fallback:sea_surface_wave_significant_height :

  0

  config_environment:constant:sea_surface_wave_stokes_drift_x_velocity :

  None

  config_environment:fallback:sea_surface_wave_stokes_drift_x_velocity :

  0

  config_environment:constant:sea_surface_wave_stokes_drift_y_velocity :

  None

  config_environment:fallback:sea_surface_wave_stokes_drift_y_velocity :

  0

  config_environment:constant:ocean_mixed_layer_thickness :

  None

  config_environment:fallback:ocean_mixed_layer_thickness :

  50

  config_environment:constant:sea_floor_depth_below_sea_level :

  None

  config_environment:fallback:sea_floor_depth_below_sea_level :

  10000

  config_environment:constant:land_binary_mask :

  None

  config_environment:fallback:land_binary_mask :

  0.0

  config_general:use_auto_landmask :

  True

  config_drift:current_uncertainty :

  0

  config_drift:current_uncertainty_uniform :

  0

  config_drift:max_speed :

  2.0

  config_readers:max_number_of_fails :

  1

  config_general:simulation_name :

  config_general:coastline_action :

  stranding

  config_general:coastline_approximation_precision :

  0.001

  config_general:time_step_minutes :

  60

  config_general:time_step_output_minutes :

  None

  config_seed:ocean_only :

  True

  config_seed:number :

  1

  config_drift:max_age_seconds :

  None

  config_drift:advection_scheme :

  euler

  config_drift:horizontal_diffusivity :

  0

  config_drift:profiles_depth :

  50

  config_drift:wind_uncertainty :

  0

  config_drift:relative_wind :

  False

  config_drift:deactivate_north_of :

  None

  config_drift:deactivate_south_of :

  None

  config_drift:deactivate_east_of :

  None

  config_drift:deactivate_west_of :

  None

  config_seed:origin_marker :

  0

  config_seed:z :

  0

  config_seed:wind_drift_factor :

  0.02

  config_seed:current_drift_factor :

  1

  config_seed:terminal_velocity :

  0.0

  config_drift:vertical_advection :

  True

  config_drift:vertical_advection_at_surface :

  False

  config_drift:vertical_mixing :

  False

  config_drift:vertical_mixing_at_surface :

  False

  config_vertical_mixing:timestep :

  60

  config_vertical_mixing:diffusivitymodel :

  environment

  config_vertical_mixing:background_diffusivity :

  1.2e-05

  config_vertical_mixing:TSprofiles :

  False

  config_drift:wind_drift_depth :

  0.1

  config_drift:stokes_drift :

  True

  config_drift:stokes_drift_profile :

  Phillips

  config_drift:use_tabularised_stokes_drift :

  False

  config_drift:tabularised_stokes_drift_fetch :

  25000

  config_general:seafloor_action :

  lift_to_seafloor

  config_drift:truncate_ocean_model_below_m :

  None

  config_seed:seafloor :

  False

  opendrift_version :

  1.14.2

  seed_geojson :

  {"features": [], "type": "FeatureCollection"}

  simulation_time :

  2025-07-02 15:51:18.079002

  reader_x_sea_water_velocity :

  0.0

  reader_y_sea_water_velocity :

  1.0

  reader_sea_surface_height :

  0

  reader_x_wind :

  0

  reader_y_wind :

  0

  reader_upward_sea_water_velocity :

  0

  reader_sea_surface_wave_significant_height :

  0

  reader_sea_surface_wave_stokes_drift_x_velocity :

  0

  reader_sea_surface_wave_stokes_drift_y_velocity :

  0

  reader_sea_floor_depth_below_sea_level :

  10000

  reader_land_binary_mask :

  ['global_landmask']

  time_coverage_end :

  2015-09-24 08:00:00

  time_coverage_duration :

  P2DT2H0M0S

  time_coverage_resolution :

  P0DT1H0M0S

  performance :

  -------------------- Reader performance: -------------------- global_landmask 0:00:00.0 total 0:00:00.0 preparing 0:00:00.0 reading 0:00:00.0 masking -------------------- Performance: 5.0 total time 4.0 configuration 0.0 preparing main loop 0.0 moving elements to ocean 0.9 main loop 0.0 updating elements 0.0 cleaning up --------------------

  geospatial_bounds_crs :

  EPSG:4326

  geospatial_bounds_vertical_crs :

  EPSG:5831

  geospatial_lat_min :

  59.900146

  geospatial_lat_max :

  61.72234

  geospatial_lat_units :

  degrees_north

  geospatial_lat_resolution :

  point

  geospatial_lon_min :

  3.7711217

  geospatial_lon_max :

  4.2031913

  geospatial_lon_units :

  degrees_east

  geospatial_lon_resolution :

  point

  runtime :

  0:00:05.030250

  geospatial_vertical_min :

  0.0

  geospatial_vertical_max :

  0.0

  geospatial_vertical_positive :

  up

Print and plot results

print(o)
o.plot(fast=True, buffer=1)

===========================
--------------------
Reader performance:
--------------------
global_landmask
 0:00:00.0  total
 0:00:00.0  preparing
 0:00:00.0  reading
 0:00:00.0  masking
--------------------
Performance:
    5.0 total time
    4.0 configuration
    0.0 preparing main loop
      0.0 moving elements to ocean
    0.9 main loop
      0.0 updating elements
    0.0 cleaning up
--------------------
===========================
Model:  OceanDrift     (OpenDrift version 1.14.2)
        100 active Lagrangian3DArray particles  (0 deactivated, 0 scheduled)
-------------------
Environment variables:
  -----
  land_binary_mask
     1) global_landmask
  -----
Readers not added for the following variables:
  sea_floor_depth_below_sea_level
  sea_surface_height
  sea_surface_wave_significant_height
  sea_surface_wave_stokes_drift_x_velocity
  sea_surface_wave_stokes_drift_y_velocity
  upward_sea_water_velocity
  x_sea_water_velocity
  x_wind
  y_sea_water_velocity
  y_wind

Discarded readers:

Time:
        Start: 2015-09-22 06:00:00 UTC
        Present: 2015-09-24 08:00:00 UTC
        Calculation steps: 50 * 1:00:00 - total time: 2 days, 2:00:00
        Output steps: 51 * 1:00:00
===========================

15:51:19 WARNING opendrift:2371: Plotting fast. This will make your plots less accurate.

(<GeoAxes: title={'center': 'OpenDrift - OceanDrift\n2015-09-22 06:00 to 2015-09-24 08:00 UTC (51 steps)'}>, <Figure size 622.055x1100 with 1 Axes>)