Multi-scale observation of surface temperature on Parco delle Biancane and Sasso Pisano (Italy) sites: from space to proximal measurements

Abstract

<p>During the field campaign held on June 2018 at Parco delle Biancane and Sasso Pisano areas, near Grosseto (Italy), we have measured the surface temperature using data acquired by different sensors at different spatial resolutions: Earth Observation (EO) data from the ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station (ECOSTRESS), Hyperspectral Thermal Emission Spectrometer (HyTES) airborne imaging data and thermal images acquired by the FlyBit drone. ECOSTRESS has five spectral bands in the range 8-12.5 μm and pixel size resolution (at nadir) of 69x38 m (2 pixels in cross track and 1 pixel in down track); HyTES is an airborne imaging spectrometer having 256 spectral channels in the range 7.5-12 μm and high spatial resolution (0.8 m for the June campaign); VUE PRO-R mounted on FlyBit drone acquires in the range 7.5-13.5 µm with a spatial resolution depending on the flight altitude (in this work the pixel size is about 0.25 m). In addition, the Sony Alpha 600 visible camera was mounted on the FlyBit drone to acquire a very high resolution optical images over the test site. Our goal is to test the possibility to integrate data at different observation scales and to use the proximal measurements to better understand the thermal structure of test sites, also related to the area morphology and to validate the methodology for estimating the surface temperature by using EO data.</p>

Satellite Time-Series Analysis for Thermal Anomaly Detection in the Naples Urban Area, Italy

“…The geomorphology of this region is strictly dependent on structural highs generated by these two nested calderas, creating several steep scarps and cliffs that may affect the incoming solar radiation and generate important temperature variations. Nowadays, Phlegrean Fields are defined by bradyseism and degassing activity, especially in the Solfatara region, where the temperature, at the vent may reach maximum values of 147 • C [26][27][28]. The urban center is in the southern part of the city (in proximity to the coast), while the industrial area is concentrated in the east-northeastern part and the northern part of the city.…”

“…After the last eruption of Monte Nuovo occurred in 1538, the volcanic complex was characterized by quiescence [28]. Minimal volcanic activity is recorded only by the bradyseism phenomena and through fumarole emission, i.e., Pisciarelli and the Solfatara, both characterized by an intense SO 2 degassing, also monitored by the ground station placed near the vent [26]. More precisely, the Nighttime HS6 is located above the Solfatara and consists of the unique hotspot located in the vegetated CLC class.…”