GB/T 19721.3-2017The issue of marine forecasts and warnings—Part 3: The issue of sea ice forecasts and warnings (English PDF)

Foreword

GB/T 19721 "Marine forecast and alarm release" is divided into three parts.

- Part 1. Storm surge alarm release;

- Part 2. Wave Forecast and Alert Release;

Part 3. Sea ice forecast and warning release.

This part is part 3 of GB/T 19721.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

This section replaces GB/T 19721.3-2006 "Marine Forecast and Alert Release Part 3: Sea Ice Forecast and Alert Release". versus GB/T 19721.3-2006 compared to the main changes are as follows.

--- Added normative reference documents (see Chapter 2);

- the term "sea ice disaster", "sea ice" and "single layer ice thickness" (see 2.2, 2.4, 2.5 in 2006);

- the terms and definitions of the "outer edge of the sea ice" have been modified (see 2.3, version 2.3 of the 2006 edition);

- the term "ice age", "ice age", "ice thickness" and "ice volume" (see 3.4, 3.5, 3.6, 3.7)

- the deletion of "purpose" and "basic principles" (see chapter 3, chapter 4 of the 2006 edition);

- modified alarm rating (see Chapter 4, 5.1 of 2006);

- modified the requirements for forecasting and warnings (see Chapter 5, Chapter 5 of the 2006 edition);

- "Archive", "Publish", "Archive" (see 5.3, 5.4, 5.5, 5.6 in 2006);

- an informative appendix was deleted (see Appendix A, Appendix B of the 2006 edition);

--- Added reference.

1 Scope

This part of GB/T 19721 specifies the classification and content of sea ice forecasts and warnings in the northern Bohai Sea and the Yellow Sea.

This section applies to marine forecasting agencies for the use of sea ice forecasting and warning services.

2 Normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this document. For undated references, the latest edition (including all modifications) applies to this document.

GB/T 15920-2010 Oceanography Terminology Physical oceanography

3 Terms and definitions

GB/T 15920-2010 Definitions and the following terms and definitions apply to this document. For ease of use, the following is repeated Some terms and definitions in GB/T 15920-2010.