Journal
REMOTE SENSING
Volume 14, Issue 16, Pages -Publisher
MDPI
DOI: 10.3390/rs14163881
Keywords
MAX-DOAS; earth observation; remote sensing; Po Valley
Categories
Funding
- ESA-ESRIN [4000128960/19/I-NS]
- [IDEAS-QA4EO WPs-2250-2251]
- [SERCO-IDEAS-QA4EO-BO/SUB27-IDEAS-QA4EO]
- [QA4EO/SER/SUB/27]
Ask authors/readers for more resources
The purpose of this study is to fill the gap in the Po Valley region of Italy by introducing a FRM4DOAS-compliant MAX-DOAS instrument called SkySpec-2D. The instrument's performance was evaluated through two measurement campaigns and showed good agreement with other instruments and satellite measurements. SkySpec-2D is now permanently stationed in the Po Valley and routinely provides its MAX-DOAS measurements to the FRM4DOAS validation network.
Multi-AXis Differential Optical Absorption Spectroscopy (MAX-DOAS) instruments are used worldwide to retrieve pollutant information from visible (VIS) and ultra-violet (UV) diffuse solar spectra. A similar instrument, able to meet the Fiducial Reference Measurements for DOAS (FRM4DOAS) standard requirements, is not yet present in the Po Valley (Italy), one of the most polluted regions in Europe. Our purpose is to close this gap exploiting the SkySpec-2D, a FRM4DOAS-compliant MAX-DOAS instrument bought by the Italian research institute CNR-ISAC in May 2021. As a first step, SkySpec-2D was involved in two measurement campaigns to assess its performance: the first one in August 2021 in Bologna where TROPOGAS, a research-grade custom-built MAX-DOAS instrument is located; the second one in September 2021 at the BAQUNIN facility at La Sapienza University (Rome) near the Pandora#117 instrument. Both campaigns revealed a good quality of SkySpec-2D measurements. Indeed, good agreement was found with TROPOGAS (correlation 0.77), Pandora#117 (correlation 0.9) and satellite (TROPOMI and OMI) measurements. Having assessed its performance, the SkySpec-2D was permanently moved to the Giorgio Fea observatory in San Petro Capofiume, located in the middle of the Po Valley, where it has been continuously acquiring zenith and off-axis diffuse solar spectra from the 1 October 2021. Nowadays, its MAX-DOAS measurements are routinely provided to the FRM4DOAS team with the purpose to be soon included in the FRM4DOAS validation network.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available