Biases due to widespread use of low-cost sensors for urban heat stress assessments (dataset)
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Project Title: Biases due to widespread use of low-cost sensors for urban heat stress assessments Contact: Sarah Berk, sberk@unc.edu Description: This dataset accompanies the manuscript “Biases due to widespread use of low-cost sensors for urban heat stress assessments”.It contains measurements from low-cost air temperature and humidity sensors deployed in different experimental setups to quantify biases due to siting and shielding practices. The dataset includes six calibration experiments (a–f) described below, along with derived variables (heat index, humidex) and reanalysis data used (ERA5 Land). a: Urban lawn deployment. Sensors placed on urban lawn within radiation shieldsb: Rooftop deployment. Sensors placed on urban rooftop within radiation shieldsc: Shielded vs unshielded. Sensors placed on urban lawn within and without radiation shields, alternating. Sensors with radiation shields are denoted with the c_Shield_on field (True/ False)d: Near HVAC outlet. Sensors placed near a HVAC outlet on the urban rooftop within radiation shields.e: Controlled Environment.f: Shield Setup Test. Sensors placed in two different formats within radiation shields. Either secured via mounting based at the bottom of the shield, or suspended hanging from wire within the shield. Sensors on mounting based are denoted with the f_Mounting_base_secured field (True/ False). Data Fields: Calibration_Label: Label for the calibration (a-f)Calibration_Desc: Description of setupSensor_ID: Unique sensor identifierDate_Time: Date and time of measurement (EDT)Air_Temperature: Measured air temperature (°C)Relative_Humidity: Measuredrelative humidity (%)Heat_Index: Heat index (°C), calculated from air temperature and relative humidity Humidex: Humidex, calculated from air temperature and relative humidity ERA5_shortwave_solar_radiation_downwards: shortwave solar radiation downwards (W/m²), taken from ERA5 Land reanalysis (DOI: 10.24381/cds.e2161bac)c_Shield_On: Only used for calibration c, True for sensors with shields on, False for those with no shieldf_Mounting_base_secured: Only used for calibration f, True for sensors secured on mounting base, False for sensors suspended within shields. File Information:File format: CSVTime resolution: 10 minutes Usage NotesCalibration labels (a–f) should always be interpreted alongside the setup descriptions above.Derived fields (Heat Index, Humidex) are based on standard formulas; see manuscript for details.ERA5 radiation is matched by nearest grid cell (the same for both urban lawn and rooftop locations). CitationIf you use this dataset, please cite:Berk, S. et al (2025). Biases due to widespread use of low-cost sensors for urban heat stress assessments [Dataset]. Zenodo. DOI: 10.5281/zenodo.17180024
