The ESA Methane+ project aims at exploiting the
SWIRShort Wave Infra
observations from different satellites in order to better differentiate
between sources and sinks of CH4
on the regional and global scale.
For this we will use the CH4
on Copernicus Sentinel-5p,
on MetOp-B, and
on Suomi NPP in combination with atmospheric inversion models.
Given the identified opportunities and challenges of the current generation of
space borne methane sensors, and the scope of the current study, the specific
study objectives are as follows:
- Providing support for the algorithm development for
the CH4 SWIR retrieval from TROPOMI, TIR from IASI/CrIS,
and joint SWIR-TIR retrieval from TROPOMI and IASI/CrIS.
- Assess the quality of the TROPOMI, IASI and
CrIS CH4 retrievals by comparing data products generated with
different algorithms and product validation using independent
- Investigate the added value of combining CH4 SWIR and
TIR in regional case studies.
- Infer global sources and sinks of CH4 from inverse
modelling of 2 years of TROPOMI and IASI (and/or CrIS) data.
- Investigate the added value of the combined use of SWIR
and TIR CH4 observations.
- Investigate the consistency of the SWIR and TIR CH4
satellite data, with model simulated transport and chemistry.
- Formulate a road map for future CH4 satellite remote
sensing based on the outcomes of this study as well as parallel studies
covering the use of CH4 from TROPOMI across the full range
The Methane+ project started on 22-Jan-2020 with a duration of 2 years.
ESA funding is acknowledged (through project AO/1-9602/19/I-DT).
Within the project we will generate a number of documents such as
the Requirements Baseline Document, ATBDs, Product Validation Report,
Auxillary Dataset User Manual and Data Pool document, Product User Manuals,
Scientific Assessment report, Scientific Roadmap, Final Report.
Schneising et al., Remote sensing of methane leakage from natural gas
and petroleum systems revisited, Atmos. Chem. Phys., 20, 9169-9182,
Bousquet et al, Error budget of the MEthane Remote LIdar missioN
(MERLIN) and its impact on the uncertainties of the global
methane budget. Journal of Geophysical Research: Atmospheres,
Buchwitz et al, Satellite-derived methane hotspot emission
estimates using a fast data-driven method, Amos. Chem. Phys.,
Hu et al, Toward global mapping of methane with TROPOMI: First results
and intersatellite comparison to GOSAT, Geophys. Res. Lett, 3682-3689,
Hu et al, The operational methane retrieval algorithm for TROPOMI,
Atmos. Meas. Tech., 9, 5423-5440,
Saunois et al, The Global Methane Budget: 2000–2012. Earth
System Science Data, 8(2), 697-751,
Schneising et al, A scientific algorithm to simultanesouly retrieve
carbon monoxide and methane from TROPOMI on-board Sentinel-5 precursor,
Atmosph. Meas. Tech., 12, 6771-6802,
Siddans et al, Global height-resolved methane retrievals from the
Infrared Atmospheric Sounding Interferometer (IASI) on MetOp, Atmos.
Meas. Tech., 10, 4135-4164,
Different datasets will be generated through this project.
Once these become available links will be provided to access those datasets.
XCH4 measured by TROPOMI (SWIR) for the period 2018-2019
(Lorente et al, 2020).
Methane enhancement due to emissions from the world’s
second-largest natural gas field Galkynysh in Turkmenistan on 10th April
(Schneising et al, 2019)
XCH4 measured by IASI (MetOp-A), averaged over 2017,
from the current RAL v2.0 data
(Siddans et al, 2020)