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NEWS.md

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+ClimaAtmos.jl Release Notes
+============================
+
+Main
+-------
+
+- ![][badge-🚀performance] Reduced the number of allocations in the NetCDF
+  writer. PRs [#2772](https://github.com/CliMA/ClimaAtmos.jl/pull/2772),
+  [#2773](https://github.com/CliMA/ClimaAtmos.jl/pull/2773).
+- Added a new script, `perf/benchmark_netcdf_io.jl` to test IO performance for
+  the NetCDF writer. PR [#2773](https://github.com/CliMA/ClimaAtmos.jl/pull/2773).
+
+<!--
+
+Contributors are welcome to begin the description of changelog items with badge(s) below. Here is a brief description of when to use badges for a particular pull request / set of changes:
+
+ - 🔥behavioralΔ - behavioral changes. For example: a new model is used, yielding more accurate results.
+ - 🤖precisionΔ - machine-precision changes. For example, swapping the order of summed arguments can result in machine-precision changes.
+ - 💥breaking - breaking changes. For example: removing deprecated functions/types, removing support for functionality, API changes.
+ - 🚀performance - performance improvements. For example: improving type inference, reducing allocations, or code hoisting.
+ - ✨feature - new feature added. For example: adding support for a cubed-sphere grid
+ - 🐛bugfix - bugfix. For example: fixing incorrect logic, resulting in incorrect results, or fixing code that otherwise might give a `MethodError`.
+
+-->
+
+[badge-🔥behavioralΔ]: https://img.shields.io/badge/🔥behavioralΔ-orange.svg
+[badge-🤖precisionΔ]: https://img.shields.io/badge/🤖precisionΔ-black.svg
+[badge-💥breaking]: https://img.shields.io/badge/💥BREAKING-red.svg
+[badge-🚀performance]: https://img.shields.io/badge/🚀performance-green.svg
+[badge-✨feature/enhancement]: https://img.shields.io/badge/feature/enhancement-blue.svg
+[badge-🐛bugfix]: https://img.shields.io/badge/🐛bugfix-purple.svg