add the main profile for echostack-org

README.md

@@ -1,2 +1,8 @@
 # .github
-Home for open-source tools and resources in ocean acoustics
+
+This repository contains the GitHub organization profile for the **echostack-org** organization.
+The organization landing page is defined in:
+```text
+profile/README.md
+```
+To update the content displayed on the organization homepage, edit `profile/README.md` and submit a pull request.

profile/README.md

@@ -0,0 +1,50 @@
+# echostack
+
+[![SciPy Proceedings](https://img.shields.io/badge/SciPy_2025-Paper-blue)](https://proceedings.scipy.org/articles/WXRH8633)
+[![GitHub Organization](https://img.shields.io/badge/GitHub-echostack--org-black?logo=github)](https://github.com/echostack-org)
+
+**echostack** is an open-source ecosystem of interoperable Python packages for processing, analyzing, visualizing, and managing scientific echosounder data.
+
+The ecosystem provides modular and scalable software components for working with water-column sonar data, from raw instrument files to calibrated, analysis-ready data products and downstream ecological interpretation.
+
+<p align="center">
+  <img src="figures/echostack_packages.png" alt="Overview of the Echostack ecosystem" width="950">
+</p>
+
+Built on the Scientific Python ecosystem, Echostack leverages libraries such as **xarray**, **Dask**, **Zarr**, **NetCDF**, **fsspec**, and **pandas**, while integrating with community projects including **regionmask**, **HoloViz**, **Prefect**, and **Pydantic**.
+
+## Core repositories
+
+| Repository | Description | Activity |
+| --- | --- | --- |
+| [**echopype**](https://github.com/echostack-org/echopype) | Data conversion, calibration, aggregation, and computation for echosounder data. | ![Stars](https://img.shields.io/github/stars/echostack-org/echopype?style=social) ![Last commit](https://img.shields.io/github/last-commit/echostack-org/echopype) |
+| [**echopype-examples**](https://github.com/echostack-org/echopype-examples) | Example notebooks and tutorials demonstrating the Echostack ecosystem. | ![Stars](https://img.shields.io/github/stars/echostack-org/echopype-examples?style=social) ![Last commit](https://img.shields.io/github/last-commit/echostack-org/echopype-examples) |
+| [**echoregions**](https://github.com/echostack-org/echoregions) | Interfaces echosounder data with annotations, lines, regions, and masks. | ![Stars](https://img.shields.io/github/stars/echostack-org/echoregions?style=social) ![Last commit](https://img.shields.io/github/last-commit/echostack-org/echoregions) |
+| [**echopop**](https://github.com/echostack-org/echopop) | Combines acoustic and biological data for population and biomass estimates. | ![Stars](https://img.shields.io/github/stars/echostack-org/echopop?style=social) ![Last commit](https://img.shields.io/github/last-commit/echostack-org/echopop) |
+| [**echoshader**](https://github.com/echostack-org/echoshader) | Interactive visualization of large echosounder datasets. | ![Stars](https://img.shields.io/github/stars/echostack-org/echoshader?style=social) ![Last commit](https://img.shields.io/github/last-commit/echostack-org/echoshader) |
+| [**echodataflow**](https://github.com/echostack-org/echodataflow) | Workflow orchestration for local and cloud-based echosounder processing pipelines. | ![Stars](https://img.shields.io/github/stars/echostack-org/echodataflow?style=social) ![Last commit](https://img.shields.io/github/last-commit/echostack-org/echodataflow) |
+| [**echodataflow-recipes**](https://github.com/echostack-org/echodataflow-recipes) | Example recipes and configurations for Echodataflow workflows. | ![Stars](https://img.shields.io/github/stars/echostack-org/echodataflow-recipes?style=social) ![Last commit](https://img.shields.io/github/last-commit/echostack-org/echodataflow-recipes) |
+| [**echolevels**](https://github.com/echostack-org/echolevels) | Proposed processing-level specifications for standardized echosounder data products. | ![Stars](https://img.shields.io/github/stars/echostack-org/echolevels?style=social) ![Last commit](https://img.shields.io/github/last-commit/echostack-org/echolevels) |
+
+
+## Design principles
+
+The Echostack ecosystem is designed to be:
+
+- **Modular**: repositories can be used independently or combined into larger workflows.
+- **Interoperable**: built upon the Scientific Python ecosystem and common open data formats.
+- **Scalable**: from personal laptops to HPC clusters and cloud platforms.
+- **Open**: community-driven, reproducible, and open-source.
+
+## Scientific publication
+
+A complete overview of the project's motivation, architecture, design principles, and example workflows is available in the SciPy Proceedings paper:
+
+> **[Echostack: A flexible and scalable open-source software suite for echosounder data processing](https://proceedings.scipy.org/articles/WXRH8633)**
+
+## Community
+
+We welcome contributions from researchers, developers, and users of ocean acoustic data.
+
+- For package-specific bugs, feature requests, or documentation improvements, please open an issue or pull request in the relevant repository.
+- For cross-repository discussions, shared standards, or organization-wide initiatives, use the **`.github`** repository.