# Longwave emissivity in ACCESS-CM

**URL:** <https://forum.access-hive.org.au/t/longwave-emissivity-in-access-cm/4715>\
**Category:** Coupled Model\
**Created:** [17 July 2025 08:25 UTC](https://forum.access-hive.org.au/t/longwave-emissivity-in-access-cm/4715 "2025-07-17T08:25:54Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![felix-schmitt](https://avatars.discourse-cdn.com/v4/letter/f/77aa72/32.png) [@felix-schmitt](https://forum.access-hive.org.au/u/felix-schmitt)\
**Post date:** [17 July 2025 08:25 UTC](https://forum.access-hive.org.au/t/longwave-emissivity-in-access-cm/4715/1 "2025-07-17T08:25:55Z")

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Dear all,  
For my post-doc position, I recently started to work on atmospheric radiative simulations using CM outputs from CMIP6. My main concern is to retrieve the land, sea and sea-ice surface longwave emissivity, which is not a standard CMIP6 output, to parameterize the radiative simulations. It’s tricky to find information on emissivity for most CMs as it’s generally not well documented. In the case of ACCESS-CM2, I would like to know if someone here could tell me how the longwave emissivity is parameterized or modeled in the different surface (land, sea and sea-ice) schemes ? I warmly thank you, It would be of great help.  
Regards,  
Félix Schmitt