Aerosol properties derived from ground-based Fourier transform spectra within the COllaborative Carbon Column Observing Network
Fourier transform infrared (FTIR) spectroscopy is particularly relevant for climate studies due to its ability to provide information on both fine absorption structures (i.e. trace gases) and broadband continuum signatures (i.e. aerosols or water continuum) across the entire infrared (IR) domain. In...
Main Authors: | , , , , , , , , , , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2023
|
Subjects: | |
Online Access: | https://publikationen.bibliothek.kit.edu/1000165780 https://publikationen.bibliothek.kit.edu/1000165780/151951787 https://doi.org/10.5445/IR/1000165780 |
id |
ftubkarlsruhe:oai:EVASTAR-Karlsruhe.de:1000165780 |
---|---|
record_format |
openpolar |
spelling |
ftubkarlsruhe:oai:EVASTAR-Karlsruhe.de:1000165780 2024-02-04T09:52:21+01:00 Aerosol properties derived from ground-based Fourier transform spectra within the COllaborative Carbon Column Observing Network Alvárez, Óscar Barreto, África García, Omaira E. Hase, Frank García, Rosa D. Gröbner, Julian León-Luis, Sergio F. Sepúlveda, Eliezer Carreño, Virgilio Alcántara, Antonio Ramos, Ramón Almansa, A. Fernando Kazadzis, Stelios Taquet, Noémie Toledano, Carlos Cuevas, Emilio 2023-12-19 application/pdf https://publikationen.bibliothek.kit.edu/1000165780 https://publikationen.bibliothek.kit.edu/1000165780/151951787 https://doi.org/10.5445/IR/1000165780 eng eng Copernicus Publications info:eu-repo/semantics/altIdentifier/doi/10.5194/amt-16-4861-2023 info:eu-repo/semantics/altIdentifier/issn/1867-1381 info:eu-repo/semantics/altIdentifier/issn/1867-8548 https://publikationen.bibliothek.kit.edu/1000165780 https://publikationen.bibliothek.kit.edu/1000165780/151951787 https://doi.org/10.5445/IR/1000165780 https://creativecommons.org/licenses/by/4.0/deed.de info:eu-repo/semantics/openAccess Atmospheric Measurement Techniques, 16 (20), 4861 – 4884 ISSN: 1867-1381, 1867-8548 ddc:550 Earth sciences info:eu-repo/classification/ddc/550 doc-type:article Text info:eu-repo/semantics/article article info:eu-repo/semantics/publishedVersion 2023 ftubkarlsruhe https://doi.org/10.5445/IR/100016578010.5194/amt-16-4861-2023 2024-01-07T23:09:17Z Fourier transform infrared (FTIR) spectroscopy is particularly relevant for climate studies due to its ability to provide information on both fine absorption structures (i.e. trace gases) and broadband continuum signatures (i.e. aerosols or water continuum) across the entire infrared (IR) domain. In this context, this study assesses the capability of the portable and compact EM27/SUN spectrometer, used within the research infrastructure COCCON (COllaborative Carbon Column Observing Network), to retrieve spectral aerosol properties from low-resolution FTIR solar absorption spectra (0.5 cm$^{−1}$). The study focuses on the retrieval of aerosol optical depth (AOD) and its spectral dependence in the 873–2314 nm spectral range from COCCON measurements at the subtropical high-mountain Izaña Observatory (IZO, Tenerife, Spain), which were coincidentally carried out with standard sun photometry within the Aerosol Robotic Network (AERONET) in the 3-year period from December 2019 to September 2022. The co-located AERONET–COCCON database was used to cross-validate these two independent techniques in the common spectral range (870–1640 nm), demonstrating an excellent agreement at the near-coincident spectral bands (mean AOD differences limited to 0.005, standard deviations up to 0.021 and Pearson regression coefficients up to 0.97). This indicates that the low-resolution COCCON instruments are suitable for detecting the aerosol broadband signal contained in the IR spectra in addition to the retrieval of precise trace gas concentrations, provided a robust calibration procedure (Langley-based or absolute calibration procedures) is used to compensate for the optical degradation of the external system (∼ 0.72 % per month). The study also assesses the capability of the EM27/SUN to simultaneously infer aerosols and trace gases and relate their common emission sources in two case study events: a volcanic plume from the La Palma eruption in 2021 and a nearby forest fire in Tenerife in 2022. Overall, our results demonstrate the ... Article in Journal/Newspaper Aerosol Robotic Network KITopen (Karlsruhe Institute of Technologie) |
institution |
Open Polar |
collection |
KITopen (Karlsruhe Institute of Technologie) |
op_collection_id |
ftubkarlsruhe |
language |
English |
topic |
ddc:550 Earth sciences info:eu-repo/classification/ddc/550 |
spellingShingle |
ddc:550 Earth sciences info:eu-repo/classification/ddc/550 Alvárez, Óscar Barreto, África García, Omaira E. Hase, Frank García, Rosa D. Gröbner, Julian León-Luis, Sergio F. Sepúlveda, Eliezer Carreño, Virgilio Alcántara, Antonio Ramos, Ramón Almansa, A. Fernando Kazadzis, Stelios Taquet, Noémie Toledano, Carlos Cuevas, Emilio Aerosol properties derived from ground-based Fourier transform spectra within the COllaborative Carbon Column Observing Network |
topic_facet |
ddc:550 Earth sciences info:eu-repo/classification/ddc/550 |
description |
Fourier transform infrared (FTIR) spectroscopy is particularly relevant for climate studies due to its ability to provide information on both fine absorption structures (i.e. trace gases) and broadband continuum signatures (i.e. aerosols or water continuum) across the entire infrared (IR) domain. In this context, this study assesses the capability of the portable and compact EM27/SUN spectrometer, used within the research infrastructure COCCON (COllaborative Carbon Column Observing Network), to retrieve spectral aerosol properties from low-resolution FTIR solar absorption spectra (0.5 cm$^{−1}$). The study focuses on the retrieval of aerosol optical depth (AOD) and its spectral dependence in the 873–2314 nm spectral range from COCCON measurements at the subtropical high-mountain Izaña Observatory (IZO, Tenerife, Spain), which were coincidentally carried out with standard sun photometry within the Aerosol Robotic Network (AERONET) in the 3-year period from December 2019 to September 2022. The co-located AERONET–COCCON database was used to cross-validate these two independent techniques in the common spectral range (870–1640 nm), demonstrating an excellent agreement at the near-coincident spectral bands (mean AOD differences limited to 0.005, standard deviations up to 0.021 and Pearson regression coefficients up to 0.97). This indicates that the low-resolution COCCON instruments are suitable for detecting the aerosol broadband signal contained in the IR spectra in addition to the retrieval of precise trace gas concentrations, provided a robust calibration procedure (Langley-based or absolute calibration procedures) is used to compensate for the optical degradation of the external system (∼ 0.72 % per month). The study also assesses the capability of the EM27/SUN to simultaneously infer aerosols and trace gases and relate their common emission sources in two case study events: a volcanic plume from the La Palma eruption in 2021 and a nearby forest fire in Tenerife in 2022. Overall, our results demonstrate the ... |
format |
Article in Journal/Newspaper |
author |
Alvárez, Óscar Barreto, África García, Omaira E. Hase, Frank García, Rosa D. Gröbner, Julian León-Luis, Sergio F. Sepúlveda, Eliezer Carreño, Virgilio Alcántara, Antonio Ramos, Ramón Almansa, A. Fernando Kazadzis, Stelios Taquet, Noémie Toledano, Carlos Cuevas, Emilio |
author_facet |
Alvárez, Óscar Barreto, África García, Omaira E. Hase, Frank García, Rosa D. Gröbner, Julian León-Luis, Sergio F. Sepúlveda, Eliezer Carreño, Virgilio Alcántara, Antonio Ramos, Ramón Almansa, A. Fernando Kazadzis, Stelios Taquet, Noémie Toledano, Carlos Cuevas, Emilio |
author_sort |
Alvárez, Óscar |
title |
Aerosol properties derived from ground-based Fourier transform spectra within the COllaborative Carbon Column Observing Network |
title_short |
Aerosol properties derived from ground-based Fourier transform spectra within the COllaborative Carbon Column Observing Network |
title_full |
Aerosol properties derived from ground-based Fourier transform spectra within the COllaborative Carbon Column Observing Network |
title_fullStr |
Aerosol properties derived from ground-based Fourier transform spectra within the COllaborative Carbon Column Observing Network |
title_full_unstemmed |
Aerosol properties derived from ground-based Fourier transform spectra within the COllaborative Carbon Column Observing Network |
title_sort |
aerosol properties derived from ground-based fourier transform spectra within the collaborative carbon column observing network |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://publikationen.bibliothek.kit.edu/1000165780 https://publikationen.bibliothek.kit.edu/1000165780/151951787 https://doi.org/10.5445/IR/1000165780 |
genre |
Aerosol Robotic Network |
genre_facet |
Aerosol Robotic Network |
op_source |
Atmospheric Measurement Techniques, 16 (20), 4861 – 4884 ISSN: 1867-1381, 1867-8548 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/amt-16-4861-2023 info:eu-repo/semantics/altIdentifier/issn/1867-1381 info:eu-repo/semantics/altIdentifier/issn/1867-8548 https://publikationen.bibliothek.kit.edu/1000165780 https://publikationen.bibliothek.kit.edu/1000165780/151951787 https://doi.org/10.5445/IR/1000165780 |
op_rights |
https://creativecommons.org/licenses/by/4.0/deed.de info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5445/IR/100016578010.5194/amt-16-4861-2023 |
_version_ |
1789969320685600768 |