Details
| Original language | English |
|---|---|
| Article number | 4102012 |
| Number of pages | 12 |
| Journal | IEEE Transactions on Geoscience and Remote Sensing |
| Volume | 62 |
| Early online date | 10 Jan 2024 |
| Publication status | Published - 30 Jan 2024 |
Abstract
Methane mitigation from anthropogenic sources such as in the production and transport of fossil fuels has been found as one of the most promising strategies to curb global warming in the near future. Satellite-based imaging spectrometers have demonstrated to be well-suited to detect and quantify these emissions at high spatial resolution, which allows the attribution of plumes to sources. The PRISMA satellite mission (ASI, Italy) has been successfully used for this application and the recently-launched EnMAP mission (DLR/GFZ, Germany) presents similar spatial and spectral characteristics (30 m spatial resolution, 30 km swath, about 8 nm spectral sampling at 2300 nm). In this work, we investigate the potential and limitations of EnMAP for methane remote sensing, using PRISMA as a benchmark to deduce its added-value. We analyze the spectral and radiometric performance of EnMAP in the 2300 nm region used for methane retrievals acquired using the matched-filter method. Our results show that in arid areas, EnMAP spectral resolution is about 2.7 nm finer and the signal-to-noise-ratio values are approximately twice as large, which leads to an improvement in retrieval performance. Several EnMAP examples of plumes from different sources around the world with flux rate values ranging from 1 to 20 t/h are illustrated. We show plumes from sectors such as onshore oil and gas and coal mining, but also from more challenging sectors such as landfills and offshore oil and gas. We detect two plumes in a close-to-sunglint configuration dataset with unprecedented flux rates of about 1 t/h, which suggests that the detection limit in offshore areas can be considerably lower under favorable conditions.
Keywords
- Absorption, EnMAP, Imaging, Instruments, matched-filter, Methane, methane, plumes, retrieval, Signal to noise ratio, Spatial resolution, Wind speed, matched filter, methane (CH ), Environmental Mapping and Analysis Program (EnMAP)
ASJC Scopus subject areas
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In: IEEE Transactions on Geoscience and Remote Sensing, Vol. 62, 4102012, 30.01.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - High-resolution methane mapping with the EnMAP satellite imaging spectroscopy mission
AU - Roger, Javier
AU - Irakulis-Loitxate, Itziar
AU - Valverde, Adriana
AU - Gorrono, Javier
AU - Chabrillat, Sabine
AU - Brell, Maximilian
AU - Guanter, Luis
PY - 2024/1/30
Y1 - 2024/1/30
N2 - Methane mitigation from anthropogenic sources such as in the production and transport of fossil fuels has been found as one of the most promising strategies to curb global warming in the near future. Satellite-based imaging spectrometers have demonstrated to be well-suited to detect and quantify these emissions at high spatial resolution, which allows the attribution of plumes to sources. The PRISMA satellite mission (ASI, Italy) has been successfully used for this application and the recently-launched EnMAP mission (DLR/GFZ, Germany) presents similar spatial and spectral characteristics (30 m spatial resolution, 30 km swath, about 8 nm spectral sampling at 2300 nm). In this work, we investigate the potential and limitations of EnMAP for methane remote sensing, using PRISMA as a benchmark to deduce its added-value. We analyze the spectral and radiometric performance of EnMAP in the 2300 nm region used for methane retrievals acquired using the matched-filter method. Our results show that in arid areas, EnMAP spectral resolution is about 2.7 nm finer and the signal-to-noise-ratio values are approximately twice as large, which leads to an improvement in retrieval performance. Several EnMAP examples of plumes from different sources around the world with flux rate values ranging from 1 to 20 t/h are illustrated. We show plumes from sectors such as onshore oil and gas and coal mining, but also from more challenging sectors such as landfills and offshore oil and gas. We detect two plumes in a close-to-sunglint configuration dataset with unprecedented flux rates of about 1 t/h, which suggests that the detection limit in offshore areas can be considerably lower under favorable conditions.
AB - Methane mitigation from anthropogenic sources such as in the production and transport of fossil fuels has been found as one of the most promising strategies to curb global warming in the near future. Satellite-based imaging spectrometers have demonstrated to be well-suited to detect and quantify these emissions at high spatial resolution, which allows the attribution of plumes to sources. The PRISMA satellite mission (ASI, Italy) has been successfully used for this application and the recently-launched EnMAP mission (DLR/GFZ, Germany) presents similar spatial and spectral characteristics (30 m spatial resolution, 30 km swath, about 8 nm spectral sampling at 2300 nm). In this work, we investigate the potential and limitations of EnMAP for methane remote sensing, using PRISMA as a benchmark to deduce its added-value. We analyze the spectral and radiometric performance of EnMAP in the 2300 nm region used for methane retrievals acquired using the matched-filter method. Our results show that in arid areas, EnMAP spectral resolution is about 2.7 nm finer and the signal-to-noise-ratio values are approximately twice as large, which leads to an improvement in retrieval performance. Several EnMAP examples of plumes from different sources around the world with flux rate values ranging from 1 to 20 t/h are illustrated. We show plumes from sectors such as onshore oil and gas and coal mining, but also from more challenging sectors such as landfills and offshore oil and gas. We detect two plumes in a close-to-sunglint configuration dataset with unprecedented flux rates of about 1 t/h, which suggests that the detection limit in offshore areas can be considerably lower under favorable conditions.
KW - Absorption
KW - EnMAP
KW - Imaging
KW - Instruments
KW - matched-filter
KW - Methane
KW - methane
KW - plumes
KW - retrieval
KW - Signal to noise ratio
KW - Spatial resolution
KW - Wind speed
KW - matched filter
KW - methane (CH )
KW - Environmental Mapping and Analysis Program (EnMAP)
UR - http://www.scopus.com/inward/record.url?scp=85182366611&partnerID=8YFLogxK
U2 - 10.1109/TGRS.2024.3352403
DO - 10.1109/TGRS.2024.3352403
M3 - Article
AN - SCOPUS:85182366611
VL - 62
JO - IEEE Transactions on Geoscience and Remote Sensing
JF - IEEE Transactions on Geoscience and Remote Sensing
SN - 0196-2892
M1 - 4102012
ER -