# "Nomad" and "Surface – Air Gas Exchanges" SAGE All-Terrain Chambers Open Access Instrumentation

B Zawilski, V Bustillo

► To cite this version:

B Zawilski, V Bustillo. "Nomad" and "Surface – Air Gas Exchanges" SAGE All-Terrain Chambers Open Access Instrumentation. OZCAR TERENO, Sep 2025, Paris, France. hal-05316419

HAL Id: hal-05316419

https://hal.science/hal-05316419v1

Submitted on 15 Oct 2025

HAL is a multi-disciplinary open access
archive for the deposit and dissemination of sci-
entific research documents, whether they are pub-
lished or not. The documents may come from
teaching and research institutions in France or
abroad, or from public or private research centers.

L'archive ouverte pluridisciplinaire HAL, est
destinée au dépôt et à la diffusion de documents
scientifiques de niveau recherche, publiés ou non,
émanant des établissements d'enseignement et de
recherche français ou étrangers, des laboratoires
publics ou privés.

<figure><img src="image_1.png" /></figure>

Distributed under a Creative Commons Attribution - ShareAlike 4.0 International License
<figure><img src="image_2.png" /></figure>

# "Nomad" and "Surface - Air Gas Exchanges" SAGE All-Terrain Chambers Open Access Instrumentation

B. Zawilski, V. Bustillo (CESBIO Toulouse - Auch)

bartosz.zawilski@cnrs.fr

<figure><img src="image_3.png" /></figure>

<figure><img src="image_4.png" /></figure>

<figure><img src="image_5.png" /></figure>

INSU

<figure><img src="image_6.png" /></figure>

<figure><img src="image_7.png" /></figure>

Université Paul Sabatier

<figure><img src="image_8.png" /></figure>

<figure><img src="image_9.png" /></figure>

Institut de recherche
pion le développement

<figure><img src="image_10.png" /></figure>

<figure><img src="image_11.png" /></figure>

<figure><img src="image_12.png" /></figure>

<figure><img src="image_13.png" /></figure>

SR

SUO-OUEST

<figure><img src="image_14.png" /></figure>

## Background & Objectives

* **Scientific studies require appropriate instrumentation,** and many laboratories build their own instruments. At CESBIO, we have developed both manual and automated accumulation chambers that cater to a wide range of needs. We share these designs with the scientific community.

**Our Objective:** Build freely accessible, inexpensive, robust, and durable devices that meet a variety of needs.
The construction is based on commercially available components and requires no special knowledge or tools.

<figure><img src="image_15.png" /></figure>

## Caractéristiques

* **Manual chambers « Nomad » :**

- Operation on the ground on stainless steel collars, whether previously buried or not.

- « Stand-Alone » Sensors (CO₂, O₂, CH₄, RH, Pa, Ta), fan and datalogger included, rechargeable batteries, 12h non-stop electric autonomy.

* **Automatic Chambers « SAGE » :**

- Operation on agricultural land, forests with or without protection from surrounding vegetation, or on water with water wings.

- Options :

- Transparent cloche (allows photosynthesis to be included) or opaque.

- Battery operation, with or without individual solar panel, or on 12-24V line.

- « Stand-Alone » or in a network (RS-485/RS-422) controlled by an external datalogger or by one of the chambers.

- Use of internal sensors (CO₂, O₂, NH₃, H₂S, CH₄, RH, Pa, Ta, SWC, Ts, PAR) and/or an external analyzer.

- Use of an internal or/and external datalogger for backing up data that can be recovered online or on site.

Compact and complete

Nomad

<figure><img src="image_16.png" /></figure>

<figure><img src="image_17.png" /></figure>

## Perspectives & Financing

**Nomad:** The ability to use a SWC and Ts probe will be added.

**SAGE:** Compatibility with existing commercial systems will be implemented soon, as well as a complementary pneumatic multiplexer system.

## Sharing

* **Publications, 2D and 3D plans, component lists, and assembly instructions are freely available:** https://doi.org/10.5281/zenodo.16746586

The development of these devices is mainly financed by the National Institute of Universe Sciences through the AAP IIT and TGIR ICOS, by Terra Forma, the State aid managed by the National Research Agency under the future investment program integrated into France 2030, bearing the reference ANR-21-ESRE-0014, by Anna Zawilski and by the Regional Space Observatory supported by the laboratory Center for Space Studies of the Biosphere.