Destination Earth DESP Use Cases: DestinE Sea Ice Decision Enhancement (DESIDE) Software Requirements Specification SRS

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EUROPEAN SPACE AGENCY CONTRACT REPORT
The work described in this report was done under ESA contract. Responsibility for the contents resides in the author or organization that prepared it.

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AMENDMENT HISTORY

This document shall be amended by releasing a new edition of the document in its entirety.
The Amendment Record Sheet below records the history and issue status of this document.

Table 1. Amendment Record Sheet
ISSUE DATE REASON

0.1

11/12/2023

Initial in-progress draft

0.2

22/04/2024

Update for Review 1

1.0

22/04/2024

First released version

1.1

19/09/2024

Second released version

1. Introduction

1.1. Purpose and Scope

This document represents the Software Requirements Specification (SRS) for the Destination Earth DESP Use Cases: DestinE Sea Ice Decision Enhancement (DESIDE) project 8482 with ESA contract 4000140320/23/I-NS.

This document describes the functional and non functional requirements applicable. This document forms the basis against which the detailed design, implementation, unit and integration testing, and the verification are performed and outlined in the Software Verification and Validation Plan (SVVP) and Software Verification and Validation Report (SVVR).

1.2. Structure of the Document

Chapter 2, Overview

This section provides an overview of the Destination Earth DESP Use Cases: DestinE Sea Ice Decision Enhancement (DESIDE).

Chapter 3, Software Requirements Specification

This section provides the software requirements for the DESIDE DESIDE

1.3. Reference Documents

The following is a list of Applicable and Reference Documents with a direct bearing on the content of this document.

Reference Document Details Version

[SOW]

Statement of Work Destination Earth DESP Use Cases selection - Round 1
Reference: CS301353.Docref.0002

1.0

[Proposal]

Proposal No. 8482: DestinE Sea Ice Decision Enhancement (DESIDE)

1.1
06/06/2023

1.4. Terminology

The following terms have been used in this document.

Term Meaning

Admin

User with administrative capabilities on a platform.

Code

The codification of an algorithm performed with a given programming language - compiled to Software or directly executed (interpreted) within the platform.

Discovery

User finds products/services of interest to them based upon search criteria.

Interactive Web Application

An Interactive Application for analysis provided as a rich user interface through the user’s web browser.

Key-Value Pair

A key-value pair (KVP) is an abstract data type that includes a group of key identifiers and a set of associated values. Key-value pairs are frequently used in lookup tables, hash tables and configuration files.

Object Store

A computer data storage architecture that manages data as objects. Each object typically includes the data itself, a variable amount of metadata, and a globally unique identifier.

Products

EO data (commercial and non-commercial) and Value-added products.

Software

The compilation of code into a binary program to be executed within the platform on-line computing environment.

User

An individual using the services.

Visualization

To obtain a visual representation of any data/products held within the platform - presented to the user within their web browser session.

Web Coverage Service (WCS)

OGC standard that provides an open specification for sharing raster datasets on the web.

Web Feature Service (WFS)

OGC standard that makes geographic feature data (vector geospatial datasets) available on the web.

Web Map Service (WMS)

OGC standard that provides a simple HTTP interface for requesting geo-registered map images from one or more distributed geospatial databases.

Web Map Tile Service (WMTS)

OGC standard that provides a simple HTTP interface for requesting map tiles of spatially referenced data using the images with predefined content, extent, and resolution.

Web Processing Services (WPS)

OGC standard that defines how a client can request the execution of a process, and how the output from the process is handled.

1.5. Glossary

The following acronyms and abbreviations have been used in this document.

Term Definition

ADD

Architecture Design Document

AOI

Area of Interest

API

Application Programming Interface

COG

Cloud optimized GeoTiff

EO

Earth Observation

EOX

EOX IT Services GmbH

ESA

European Space Agency

FUSE

Filesystem in Userspace

ICD

Interface Control Document

JSON

JavaScript Object Notation

KVP

Key-value Pair

M2M

Machine-to-machine

OGC

Open Geospatial Consortium

PMP

Project Management Plan

REST

Representational State Transfer

SDD

Software Design Document

SFTP

Secure File Transfer Protocol

SRF

Software Reuse File

SRN

Software Release Note

SRP

Software Release Plan

SRS

Software Requirements Specification

SSH

Secure Shell

STAC

Spatio-Temporal Asset Catalog

SUM

Software User Manual

SVVP

Software Verification and Validation Plan

SVVR

Software Verification and Validation Report

TOI

Time of Interest

UMA

User-Managed Access

US

User Story

WCS

Web Coverage Service

WFS

Web Feature Service

WMS

Web Map Service

WMTS

Web Map Tile Service

WPS

Web Processing Service

WPS-T

Transactional Web Processing Service

2. Overview

Polar View Earth Observation Limited is working in collaboration with EOX IT Services, Drift+Noise Polar Services, the Danish Meteorological Institute, the Norwegian Meteorological Institute, and the Finnish Meteorological Institute to develop a fully functional Use Case that utilizes the DESP/DestinE system capabilities and data and adds value to meet the needs of policy and decision makers who require information on the past, current, and forecasted sea ice and other relevant conditions for operational purposes in the Baltic Sea, European Arctic Ocean, and the rest of the polar regions.

The Use Case will build on and complement existing operational and climate sea ice products and services including those provided by the Copernicus Marine Service, the national Ice Services, the ESA Polar Thematic Exploitation Platform (Polar TEP), and the commercial Drift+Noise IcySea app. The Use Case will augment and improve on the current offerings by:

  • Aggregating information of different types and from different sources to provide common products that span jurisdictional boundaries.

  • Producing new products that will improve the ability of users to make good decisions.

  • Making the products available in ways and means that are appropriate for the skills and requirements of different user communities.

One driver for the project is the regulation of the International Maritime Organization (IMO) of the United Nations mandating that ships operating in the polar regions meet certain requirements (the Polar Code). Among other things, the Polar Code specifies a range of information that ships traveling in polar waters are required to access for planning and operations. The Use Case will demonstrate the value of short and medium-term forecasts of sea ice, meteorological, and ocean conditions suitable for strategic and tactical decision making by ships and their owners.

A second driver for the project is the effect of climate change on polar conditions that will impact long-term planning and policy development for polar operations such as fishing, tourism, scientific research campaigns, oil and gas development, and supplying northern communities. The Use Case will deliver long-term forecasts of how changing sea ice and other conditions will affect where different types of ships will be able to travel in the polar regions compared to historical averages.

Benefits to polar operations and the rest of society will include increased safety of life and property, decreased pollution, and protection of sensitive environmental areas.

3. Software Requirements Specification

This chapter lists the software requirements with a requirements matrix and references to documents.

Doc Reference Section Title Short Description Compliance

UCD

REQ01

3.2., 3.3., & 3.4.

Interactive dashboard

DESIDE shall provide an online dashboard allowing users to interactively explore processed, integrated and combined dataset for the various covered regions and projections. Within the interactive dashboard users shall be able to compare historical sea ice indicators with future projections in order to establish a trust in future projections based on historical performance.

P, more data and analysis features are added in the Polar dashboard.

UCD

REQ02

3.2., 3.3., & 3.4.

Data access

Access to sea ice data including ice movement observations using both buoys and radars as well as forecasts of sea-ice movement and compression, and volume and deformation characteristics of sea ice shall be demonstrated and provided.

P, a first draft Jupyter notebook showing data access is available. More data needs to be made accessible through DESP platfrom and access demonstrated in the notebook.

UCD

REQ03

3.4.

Data transfer between IcySea and Polar TEP

The exchanging and sending of data between Polar TEP and IcySea application for display and analysis in both platforms shall be supported.

P, in development. First data examples are shown in the polar dashboard.

UCD

REQ04

3.2.

Available DESP Data

The interactive dashboard and notebook shall provide access to the following data served from DESP:

  • TOPAZ4b - Arctic Ocean Physics Reanalysis

  • TOPAZ5 - Arctic Ocean Physics Analysis And Forecast

  • All data referenced in the "Pre-conditions" row of the table in 3.2. of the UCD. Note: The availability of this data on DESP is a precondition.

N, as precondition is not met.

UCD

REQ05

3.2.

Available Data

The interactive dashboard and notebook shall still provide access to the following data in case it will not be available on DESP:

  • TOPAZ4b - Arctic Ocean Physics Reanalysis

  • TOPAZ5 - Arctic Ocean Physics Analysis And Forecast

C

UCD

REQ06

3.3.

Available DESP Data

The interactive dashboard and notebook shall provide access to the following data served from DESP:

  • TOPAZ4b - Arctic Ocean Physics Reanalysis

  • TOPAZ5 - Arctic Ocean Physics Analysis And Forecast

  • All data referenced in the "Pre-conditions" row of the table in 3.3. of the UCD. Note: The availability of this data on DESP is a precondition.

N, as precondition is not met.

UCD

REQ07

3.3.

Available Data

The interactive dashboard and notebook shall still provide access to the following data in case it will not be available on DESP:

  • TOPAZ4b - Arctic Ocean Physics Reanalysis

  • TOPAZ5 - Arctic Ocean Physics Analysis And Forecast

C

UCD

REQ08

3.4.

Available DESP Data

The interactive dashboard and notebook shall provide access to the following data served from DESP:

  • TOPAZ4b - Arctic Ocean Physics Reanalysis

  • TOPAZ5 - Arctic Ocean Physics Analysis And Forecast

  • All data referenced in the "Pre-conditions" row of the table in 3.4. of the UCD. Note: The availability of this data on DESP is a precondition.

N, as precondition is not met.

UCD

REQ09

3.4.

Available Data

The interactive dashboard and notebook shall still provide access to the following data in case it will not be available on DESP:

  • TOPAZ4b - Arctic Ocean Physics Reanalysis

  • TOPAZ5 - Arctic Ocean Physics Analysis And Forecast

C

UCD

REQ10

3.4.

Available Data

The interactive dashboard shall provide access to the RADARSAT Constellation Mission (RCM) SAR imagery

C

UCD

REQ11

3.4.

Available Data

Sea Ice Charts are available for display in dashboard and as input for POLARIS algorithm

C

3.1. DESIDE project diagram

DESIDE diagram
Figure 1. DESIDE diagram

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