CO2_monitoring_data

CO2 monitoring networks with low-cost and medium-precision sensors (LCSs) have become an exploratory direction for CO2 observation under complex emission conditions in cities. Yet the performance of such LCS after deployment in the field faces significant challenges due to environmental impacts and long-term drifts due to sensor degradation. We conducted 30 months of co-located observations using SenseAir K30, with a reference instrument (Picarro) to study the long-term performance of the LCSs under field conditions, which is essential for the correction and validation of mid-low cost CO2 observation networks.The original data used in the research of low-cost CO2 monitoring sensors. The sensors are co-located with a Picarro analyzer from Jun 2022 to Dec 2024. The CO2 monitoring concentration is in the file 1, with environmental correction and drift calibration. The environmental sensitivity corrected results are provided in the file 2, without the calibration of long-term drift. The reference CO2 data from Picarro are also provided in the data files.