Carbon dioxide (CO2) measurement has an important role in atmosphere monitoring. Usually, two types of
measurements are carried out. The first one is based on gas concentration measurement while the second involves gas
exchange rate measurement between earth surface and atmosphere [1]. There are several methods which allow gas
concentration measurement. However, most of them require expensive instrumentation or large devices (i.e. gas
chambers). In order to precisely measure either CO2 concentration or CO2 exchange rate, preferably a sensors network
should be used. These sensors must have small dimensions, low power consumption, and they should be cost-effective.
Therefore, this creates a great demand for a robust low-power and low-cost CO2 sensor [2,3]. As a solution, we propose
a photonic sensor that can measure CO2 concentration and also can be used to measure gas exchange by using the Eddy
covariance method [1].
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