woaTransects
An analysis task for computing meridional transects of MPAS fields at evenly spaced latitudes around Antarctica and comparing them with results from the World Ocean Atlas 2023 (WOA23).
Component and Tags:
component: ocean
tags: climatology, transect, woa, publicObs
Configuration Options
The following configuration options are available for this task:
[woaTransects]
## options related to plotting model vs. World Ocean Atlas 2023 (WOA23)
## transects.
# Times for comparison times (Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct,
# Nov, Dec, JFM, AMJ, JAS, OND, ANN)
seasons = []
# The approximate horizontal resolution (in km) of each transect. Latitude/
# longitude between observation points will be subsampled at this interval.
# Use 'obs' to indicate no subsampling. Use 'mpas' to indicate plotting of
# model data on the native grid, in which case comparison with observations
# will take place on the observation grid.
#horizontalResolution = mpas
#horizontalResolution = obs
horizontalResolution = 5
# The name of the vertical comparison grid. Valid values are 'mpas' for the
# MPAS vertical grid, 'obs' to use the locations of observations or
# any other name if the vertical grid is defined by 'verticalComparisonGrid'
#verticalComparisonGridName = mpas
#verticalComparisonGridName = obs
verticalComparisonGridName = uniform_10_to_1500m_at_10m
# The vertical comparison grid if 'verticalComparisonGridName' is not 'mpas' or
# 'obs'. This should be numpy array of (typically negative) elevations (in m).
# The first and last entries are used as axis bounds for 'mpas' and 'obs'
# vertical comparison grids
verticalComparisonGrid = numpy.linspace(-10, -1500, 150)
# A range for the y axis (if any)
verticalBounds = []
# The minimum weight of a destination cell after remapping. Any cell with
# weights lower than this threshold will therefore be masked out.
renormalizationThreshold = 0.01
# min and max latitude of transects
minLat = -80
maxLat = -60
# longitudes of transects
# Default transects are at Filchner, Bellingshausen Sea, Thwaites, Ross, Totten,
# Amery, Fimbul
longitudes = [318., 280., 253., 187., 117., 75., 0.]
# a list of fields top plot for each transect. All supported fields are listed
# below.
fieldList = ['temperature', 'salinity']
[woaTemperatureTransects]
## options related to plotting WOA23 transects of potential temperature
# colormap for model/observations
colormapNameResult = RdYlBu_r
# whether the colormap is indexed or continuous
colormapTypeResult = continuous
# the type of norm used in the colormap
normTypeResult = linear
# A dictionary with keywords for the norm
normArgsResult = {'vmin': -2.0, 'vmax': 2.0}
# color indices into colormapName for filled contours
#colormapIndicesResult = [0, 40, 80, 110, 140, 170, 200, 230, 255]
# colormap levels/values for contour boundaries
#colorbarLevelsResult = [0, 0.25, 0.5, 0.75, 1, 2, 3, 4, 5, 6]
# place the ticks automatically by default
# colorbarTicksResult = numpy.linspace(0.0, 6.0, 9)
# contour line levels (use [] for automatic contour selection, 'none' for no
# contour lines)
#contourLevelsResult = np.arange(0.5, 6.0, 1.0)
contourLevelsResult = 'none'
# colormap for differences
colormapNameDifference = balance
# whether the colormap is indexed or continuous
colormapTypeDifference = continuous
# the type of norm used in the colormap
normTypeDifference = linear
# A dictionary with keywords for the norm
normArgsDifference = {'vmin': -2.0, 'vmax': 2.0}
# color indices into colormapName for filled contours
#colormapIndicesDifference = [0, 28, 57, 85, 113, 128, 128, 142, 170, 198, 227, 255]
# colormap levels/values for contour boundaries
#colorbarLevelsDifference = [-2, -1.5, -1.25, -1, -0.2, 0, 0.2, 1, 1.25, 1.5, 2]
# place the ticks automatically by default
# colorbarTicksDifference = numpy.linspace(-2.0, 2.0, 9)
# contour line levels (use [] for automatic contour selection, 'none' for no
# contour lines)
#contourLevelsDifference = np.arange(-1.8, 2.0, 0.4)
contourLevelsDifference = 'none'
[woaSalinityTransects]
## options related to plotting WOA23 transects of salinity
# colormap for model/observations
colormapNameResult = haline
# whether the colormap is indexed or continuous
colormapTypeResult = continuous
# the type of norm used in the colormap
normTypeResult = linear
# A dictionary with keywords for the norm
normArgsResult = {'vmin': 33.8, 'vmax': 35.0}
# color indices into colormapName for filled contours
#colormapIndicesResult = [0, 40, 80, 110, 140, 170, 200, 230, 255]
# colormap levels/values for contour boundaries
#colorbarLevelsResult = [34, 34.3, 34.5, 34.65, 34.675, 34.7, 34.725, 34.75, 34.8, 35]
# place the ticks automatically by default
# colorbarTicksResult = numpy.linspace(34.0, 35.0, 9)
# contour line levels (use [] for automatic contour selection, 'none' for no
# contour lines)
#contourLevelsResult = np.arange(34.1, 35.0, 0.1)
contourLevelsResult = 'none'
# colormap for differences
colormapNameDifference = balance
# whether the colormap is indexed or continuous
colormapTypeDifference = continuous
# the type of norm used in the colormap
normTypeDifference = linear
# A dictionary with keywords for the norm
normArgsDifference = {'vmin': -0.5, 'vmax': 0.5}
# color indices into colormapName for filled contours
#colormapIndicesDifference = [0, 28, 57, 85, 113, 128, 128, 142, 170, 198, 227, 255]
# colormap levels/values for contour boundaries
#colorbarLevelsDifference = [-0.5, -0.2, -0.1, -0.05, -0.02, 0, 0.02, 0.05, 0.1, 0.2, 0.5]
# place the ticks automatically by default
# colorbarTicksDifference = numpy.linspace(-0.5, 0.5, 9)
# contour line levels (use [] for automatic contour selection, 'none' for no
# contour lines)
#contourLevelsDifference = numpy.linspace(-0.6, 0.6, 9)
contourLevelsDifference = 'none'
The options minLat and maxLat determine the start and end of each
meridional transect (in degrees). The option longitudes is a list or
numpy array of longitudes for each transect, e.g.:
longitudes = numpy.linspace(0, 330, 12)
produces 12 transects spaced every 30°.
The user can select only to plot a subset of the supported fields by adding
only the desired field names to fieldList. Only potential temperature
and salinity are currently available.
Ater the woaTransects section, there is a section for each supported field
specifying the information related to the colormap.
- For details on remaining configuration options, see:
Observations
Example Result
