Meteorological Data

Tactical Planning Charts

Wave Height
Gale Probability
Surface Wind Speed
Surface Air Pressure
Surface Air Temperature
Surface Dew Point
Surface Air Temperature minus Surface Dew Point
Surface Sea Temperature minus Surface Dew Point

simple charts. These charts can be used to prepare briefing notes and also provide sea state data for the propagation loss models.

The source data was processed by OAD to produce a set of

1 degree

1 month

Notes:

Temporal resolution:

Spatial resolution:

- Secondary Layer Base
- Shallowest Channel
- Depth Excess
- Range to First Convergence Zone

We are proud of the Range to First Convergence Zone (CZ) charts which show where CZ conditions can be found and what the expected ranges will be. The charts are constructed using water column and bathymetry data together with the HODGSON propagation loss model (chart example: January).

- Sea Surface Temperature
- Sea Surface Salinity
- Sonic Layer Depth

The US Navy Marine Climatic Atlas of the World (USMCAW)

Source:

The charts are:

0.25 degree

1 month

Notes:

Notes:

Temporal resolution:

Temporal resolution:

Spatial resolution:

Spatial resolution:

OAD (from WOA and GEBCO)

Source:

Source:

extend to the seabed and all grid squares are supplied with a profile.

Both 1 and 0.25 degree datasets are provided for reference.

Both 1 and 0.25 degree data available for areas with space data coverage at high resolution.

This climatological data is supported by Expendable Bathythermograph (XBT) from the WOA. The WOA provides approximately 500,000 measured XBT taken at random times and with random distribution.

OAD spatially enhances the data to ensure that all profiles

1 month

0.25 degree

World Ocean Atlas 2018 Beta / 2013 V2

Water Column Data

same dataset has been transposed using recognised algorithms by OAD to provide data suitable for both mid and low frequencies. The data is available to view graphically (as chart overlays and as seabed reflection loss curves) and is used by the program for calculations.

HFEVA is used in its original format for higher frequencies. The

Water Depth & Land Elevation

World Vector Shoreline Data

is suitable for the open ocean but provides limited coastline definition when ‘zoomed in’ (especially around island areas). WVS data provides an effective way of drawing high definition coastline

Standard WADER charts are drawn using bathymetry data. This

World Vector Shoreline, NGDC, Boulder, Colorado (WVS)

This was DBDB5 (5 min resolution) when the system was produced in 1991 (issued on 28 floppy discs). We have since progressed through ETOPO5, DBDBV and ETOPO2, all of which provided increased spatial resolution.

ESRI Raster Format Reader: WADER V8.2 also allows users to upload their own high-resolution bathymetry data in ESRI Raster Format (ASCII) where available and appropriate. Data resolution can be as high as 0.5m.

OAD endeavour to supply the highest quality data available.

1:100000

N/A

Source:

Temporal resolution:

Spatial resolution:

Source:

GEBCO V3

Spatial resolution:

Temporal resolution:

Notes:

Notes:

Notes:

N/A

0.5 arcmin, subsampled to 1 and 2 arcmin

6 arcsec (specific areas), 5 arcmin (near Global)

N/A

Temporal resolution:

Spatial resolution:

HFEVA Stennis Space Centre*

Source:

Sediment Data

only.

* Dataset used for

Sonar Data

Therefore OAD has created a set of Sonar Parameters for Unclassified Training (SPUTS) which are designed to emulate the behaviour of real sonars for training and planning purposes. For operational use, WADER will require the actual parameters of any relevant sonars to be uploaded by the user.

The majority of military sonar parameters are classified.

OAD

Source:

Notes: