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High Resolution Marine Weather Data Specifications

Item Value
Data Name High Resolution Marine Weather Data
Data Area Regional (North Pacific, North Atlantic, South East Asia)
Data Output Format ZIP
Data Size Average 1.5 MB
Binary Data Structure Flat binary 2D grid data without any header data
Binary Grid Value Type Four-byte floats are recorded in sequence

Data Elements

No Item Code Item Name Unit
1 sigwh Significant wave height meter
2 awp Average period second
3 pwh Primary wave height meter
4 pwd Primary wave direction degree
5 pwp Primary period second
6 swh Secondary wave height meter
7 swd Secondary wave direction degree
8 swp Secondary period second
9 pswh Swell wave height meter
10 pswd Swell wave direction degree
11 pswp Swell period second
12 wsh WindSea wave height meter
13 wsd WindSea wave direction degree
14 wsp WindSea period second

Detail Specification

No Item Code Update Times Forecast Duration Time Pitch Resolution
1 sigwh 01:00, 07:00, 13:00, 19:00 UTC 96 H 1 H 0.125
2 awp 01:00, 07:00, 13:00, 19:00 UTC 96 H 1 H 0.125
3 pwh 01:00, 07:00, 13:00, 19:00 UTC 96 H 1 H 0.125
4 pwd 01:00, 07:00, 13:00, 19:00 UTC 96 H 1 H 0.125
5 pwp 01:00, 07:00, 13:00, 19:00 UTC 96 H 1 H 0.125
6 swh 01:00, 07:00, 13:00, 19:00 UTC 96 H 1 H 0.125
7 swd 01:00, 07:00, 13:00, 19:00 UTC 96 H 1 H 0.125
8 swp 01:00, 07:00, 13:00, 19:00 UTC 96 H 1 H 0.125
9 pswh 01:00, 07:00, 13:00, 19:00 UTC 96 H 1 H 0.125
10 pswd 01:00, 07:00, 13:00, 19:00 UTC 96 H 1 H 0.125
11 pswp 01:00, 07:00, 13:00, 19:00 UTC 96 H 1 H 0.125
12 wsh 01:00, 07:00, 13:00, 19:00 UTC 96 H 1 H 0.125
13 wsd 01:00, 07:00, 13:00, 19:00 UTC 96 H 1 H 0.125
14 wsp 01:00, 07:00, 13:00, 19:00 UTC 96 H 1 H 0.125

Region Specification

No Region Code Region Name Detail of Region Grid
1 npac North Pacific Latitude: 15.000000 to 64.875000
Longitude: 105.000000 to 249.875000		 1160 x 400
2 natl North Atlantic Latitude: 30.000000 to 59.875000
Longitude: 275.000000 to 404.875000		 1040 x 240
3 seaasia South East Asia Latitude: -15.000000 to 14.875000
Longitude: 90.000000 to 159.875000		 560 x 240

Past Data

For past base times, only the analysis data at the initial timestep (t000) is retained.
Forecast timesteps (t001, t002, etc.) are deleted once they become historical.
To retrieve past conditions, specify timestep=000 along with the target base time date.

Parameters​

Header Parameters

Authorization*

"WniWebApi " + Token ID

Typestring
Required

Query Parameters

element*

Element (Required).
Specify one of the following:

  • npac_sigwh: North Pacific - Significant wave height (meter)
  • npac_awp: North Pacific - Average period (second)
  • npac_pwh: North Pacific - Primary wave height (meter)
  • npac_pwd: North Pacific - Primary wave direction (degree, coming from)
  • npac_pwp: North Pacific - Primary period (second)
  • npac_swh: North Pacific - Secondary wave height (meter)
  • npac_swd: North Pacific - Secondary wave direction (degree, coming from)
  • npac_swp: North Pacific - Secondary period (second)
  • npac_pswh: North Pacific - Swell wave height (meter)
  • npac_pswd: North Pacific - Swell wave direction (degree, coming from)
  • npac_pswp: North Pacific - Swell period (second)
  • npac_wsh: North Pacific - WindSea wave height (meter)
  • npac_wsd: North Pacific - WindSea wave direction (degree, coming from)
  • npac_wsp: North Pacific - WindSea period (second)
  • natl_sigwh: North Atlantic - Significant wave height (meter)
  • natl_awp: North Atlantic - Average period (second)
  • natl_pwh: North Atlantic - Primary wave height (meter)
  • natl_pwd: North Atlantic - Primary wave direction (degree, coming from)
  • natl_pwp: North Atlantic - Primary period (second)
  • natl_swh: North Atlantic - Secondary wave height (meter)
  • natl_swd: North Atlantic - Secondary wave direction (degree, coming from)
  • natl_swp: North Atlantic - Secondary period (second)
  • natl_pswh: North Atlantic - Swell wave height (meter)
  • natl_pswd: North Atlantic - Swell wave direction (degree, coming from)
  • natl_pswp: North Atlantic - Swell period (second)
  • natl_wsh: North Atlantic - WindSea wave height (meter)
  • natl_wsd: North Atlantic - WindSea wave direction (degree, coming from)
  • natl_wsp: North Atlantic - WindSea period (second)
  • seasia_sigwh: South East Asia - Significant wave height (meter)
  • seasia_awp: South East Asia - Average period (second)
  • seasia_pwh: South East Asia - Primary wave height (meter)
  • seasia_pwd: South East Asia - Primary wave direction (degree, coming from)
  • seasia_pwp: South East Asia - Primary period (second)
  • seasia_swh: South East Asia - Secondary wave height (meter)
  • seasia_swd: South East Asia - Secondary wave direction (degree, coming from)
  • seasia_swp: South East Asia - Secondary period (second)
  • seasia_pswh: South East Asia - Swell wave height (meter)
  • seasia_pswd: South East Asia - Swell wave direction (degree, coming from)
  • seasia_pswp: South East Asia - Swell period (second)
  • seasia_wsh: South East Asia - WindSea wave height (meter)
  • seasia_wsd: South East Asia - WindSea wave direction (degree, coming from)
  • seasia_wsp: South East Asia - WindSea period (second)
Typestring
Required
Enum
npac_sigwhnpac_awpnpac_pwhnpac_pwdnpac_pwpnpac_swhnpac_swdnpac_swpnpac_pswhnpac_pswdnpac_pswpnpac_wshnpac_wsdnpac_wspnatl_sigwhnatl_awpnatl_pwhnatl_pwdnatl_pwpnatl_swhnatl_swdnatl_swpnatl_pswhnatl_pswdnatl_pswpnatl_wshnatl_wsdnatl_wspseasia_sigwhseasia_awpseasia_pwhseasia_pwdseasia_pwpseasia_swhseasia_swdseasia_swpseasia_pswhseasia_pswdseasia_pswpseasia_wshseasia_wsdseasia_wsp
Examplenpac_sigwh
date

Target Date (Optional).
Format: yyyymmddhh
'hh' (hours) value is based on data updated time.
Directed to latest data if omitted.

Typestring
Example2024060912
pattern^\d{10}$
timestep

Time Step (Optional).
Format: 3 digit number, e.g. "000", "003", "012", up to "384".
Directed to "000" data if omitted.

Typestring
Example000
pattern^\d{3}$

Responses​

ZIP file containing high resolution marine weather data
application/zip
JSON
"string"

Playground​

Headers
Variables
Key
Value

Samples​

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