Hartmut Boesch
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View article: Identification and quantification of CH <sub>4</sub> emissions from Madrid landfills using airborne imaging spectrometry and greenhouse gas lidar
Identification and quantification of CH <sub>4</sub> emissions from Madrid landfills using airborne imaging spectrometry and greenhouse gas lidar Open
Methane (CH4), alongside carbon dioxide (CO2), is a key driver of anthropogenic climate change. Reducing CH4 is crucial for short-term climate mitigation. Waste-related activities, such as landfills, are a major CH4 source, even in develop…
View article: Surface reflectance biases in XCH <sub>4</sub> retrievals from the 2.3 µm band are enhanced in the presence of aerosols
Surface reflectance biases in XCH <sub>4</sub> retrievals from the 2.3 µm band are enhanced in the presence of aerosols Open
In this work, we present the results of an observing system simulation experiment (OSSE) in which we investigate the emergence of a surface-reflectance-dependent bias in retrieved column-averaged dry-air mole fractions of methane (XCH4). O…
View article: Water vapour isotopes over West Africa as observed from space: which processes control tropospheric H <sub>2</sub> O ∕ HDO pair distributions?
Water vapour isotopes over West Africa as observed from space: which processes control tropospheric H <sub>2</sub> O ∕ HDO pair distributions? Open
The West African Monsoon (WAM) is crucial for rainfall in West Africa, impacting socio-economic conditions. Its complexity arises from interactions between large-scale circulation, convective dynamics, and microphysical processes, making i…
View article: First results of the XBAER aerosol optical depth algorithm with EnMAP data
First results of the XBAER aerosol optical depth algorithm with EnMAP data Open
New high-resolution hyper and multispectral satellite instruments enable the retrieval of aerosol optical depth (AOD) at spatial resolutions of tens of meters. The eXtensible Bremen AErosol Retrieval (XBAER) AOD retrieval algorithm has pre…
View article: Aerosol composition retrieval from a combination of three different spaceborne instruments: information content analysis
Aerosol composition retrieval from a combination of three different spaceborne instruments: information content analysis Open
This study focuses on the information content for retrieving aerosol optical depth (AOD) and its components from satellite measurements. We utilise an optimal estimation retrieval algorithm with data from three satellite-based instruments:…
View article: MAX-DOAS observations of spatial variability of NO2 in Athens
MAX-DOAS observations of spatial variability of NO2 in Athens Open
Nitrogen dioxide is a key pollutant in the troposphere. Most of its sources are anthropogenic and linked to the burning of fossil fuels, but wildfires, lightning and soil emissions also contribute to the overall NOx (NO + NO2) loading.Usin…
View article: Sensitivity and Identification of Cloud Phases in the Solar Spectrum Using Dual-View Satellite Observations
Sensitivity and Identification of Cloud Phases in the Solar Spectrum Using Dual-View Satellite Observations Open
The cloud phase is expected to change in the warming world. Knowledge of the cloud phase is an initial and essential step in retrieving cloud optical parameters. Cloud optical parameters are generally retrieved by single-viewing remote sen…
View article: The Potential for Future Satellite Missions to Advance the Arctic Methane Permafrost Challenge (AMPAC)
The Potential for Future Satellite Missions to Advance the Arctic Methane Permafrost Challenge (AMPAC) Open
Permafrost degradation in the Arctic is accelerating and expected to enhance greenhouse gas (GHG) emissions. The Arctic Methane and Permafrost Challenge (AMPAC) was initialized by NASA and ESA as a transatlantic networking action striving …
View article: Let&#8217;s Investigate Methane for Climate Action
Let’s Investigate Methane for Climate Action Open
2025 started with the launch of the H-Europe project IM4CA to enhance the quantification and understanding of methane emissions and sinks. A consortium of 25 partners joins forces to investigate pressing questions about the evolution atmos…
View article: CINDI-3 glyoxal intercomparison
CINDI-3 glyoxal intercomparison Open
Glyoxal (CHOCHO) is an intermediate product of the oxidation of volatile organic compounds (VOCs) and has anthropogenic, biogenic and pyrogenic sources. It is an indicator of formation of secondary organic aerosols in the atmosphere and pl…
View article: Satellite Aerosol Composition Retrieval from a Combination of three different Instruments
Satellite Aerosol Composition Retrieval from a Combination of three different Instruments Open
The influence of aerosols on climate is determined not only by their global distribution but also by their specific composition. Knowledge of the aerosol component distribution on a global scale is important (among other factors) for the r…
View article: Methane retrievals and emission estimates of localized sources&#160;from EnMAP and EMIT space-borne data
Methane retrievals and emission estimates of localized sources from EnMAP and EMIT space-borne data Open
Anthropogenic emissions of methane (CH4) are the second-largest anthropogenic source of greenhouse gases after carbon dioxide (CO2) and are a major driver of climate change. Rapid reductions in emissions would help reduce near-term warming…
View article: EYE-CLIMA: A Horizon Europe project using atmospheric inversions to improve national estimates of greenhouse gas emissions
EYE-CLIMA: A Horizon Europe project using atmospheric inversions to improve national estimates of greenhouse gas emissions Open
EYE-CLIMA is a Horizon Europe project that aims to improve estimates of emissions of climate forcers (CO2, CH4, N2O, SF6, HFCs, and black carbon aerosols) by using atmospheric observations. Atmospheric observations can be used, with the he…
View article: Ghost Plumes: Artificial splitting of greenhouse gas emission plumes in passive remote sensing observations in special viewing geometries
Ghost Plumes: Artificial splitting of greenhouse gas emission plumes in passive remote sensing observations in special viewing geometries Open
Spectrally high-resolution passive remote sensing imaging spectrometers are becoming increasingly important for reliable quantification of anthropogenic greenhouse gas (GHG) emissions from a wide variety of carbon dioxide (CO2) and methane…
View article: Fiducial Reference Measurements for Greenhouse Gases (FRM4GHG): Validation of Satellite (Sentinel-5 Precursor, OCO-2, and GOSAT) Missions Using the COllaborative Carbon Column Observing Network (COCCON)
Fiducial Reference Measurements for Greenhouse Gases (FRM4GHG): Validation of Satellite (Sentinel-5 Precursor, OCO-2, and GOSAT) Missions Using the COllaborative Carbon Column Observing Network (COCCON) Open
The COllaborative Carbon Column Observing Network has become a reliable source of high-quality ground-based remote sensing network data that provide column-averaged dry-air mole fractions of carbon dioxide (XCO2), methane (XCH4), and carbo…
View article: Surface reflectance biases in XCH <sub>4</sub> retrievals from the 2.3 μm band are enhanced in the presence of aerosols
Surface reflectance biases in XCH <sub>4</sub> retrievals from the 2.3 μm band are enhanced in the presence of aerosols Open
In this work, we present the results of an observing system simulation experiment (OSSE) in which we investigate the emergence of a surface reflectance-dependent bias in retrieved column-averaged dry-air mole fractions of methane (XCH4). O…
View article: Advancing the Arctic Methane Permafrost Challenge (AMPAC) With Future Satellite Missions
Advancing the Arctic Methane Permafrost Challenge (AMPAC) With Future Satellite Missions Open
Permafrost degradation in the Arctic is accelerating and is forecast to enhance greenhouse gas (GHG) emissions from the large permafrost carbon pool. Earth observation has a key role in determining GHG sources and sinks, and multiple curre…
View article: Satellite Aerosol Composition Retrieval from a combination of three different Instruments: Information content analysis
Satellite Aerosol Composition Retrieval from a combination of three different Instruments: Information content analysis Open
This study focuses on the information content for retrieving Aerosol Optical Depth (AOD) and its components from satellite measurements. We utilize an optimal estimation retrieval algorithm with data from three satellite-based instruments:…
View article: Identification and Quantification of CH <sub>4</sub> Emissions from Madrid Landfills using Airborne Imaging Spectrometry and Greenhouse Gas Lidar
Identification and Quantification of CH <sub>4</sub> Emissions from Madrid Landfills using Airborne Imaging Spectrometry and Greenhouse Gas Lidar Open
Methane (CH4), alongside carbon dioxide (CO2), is a key driver of anthropogenic climate change. Reducing CH4 is crucial for short-term climate mitigation. Waste-related activities, such as landfills, are a major CH4 source, even in develop…
View article: Greenhouse gas column observations from a portable spectrometer in Uganda
Greenhouse gas column observations from a portable spectrometer in Uganda Open
The extensive terrestrial ecosystems of tropical Africa are a significant store of carbon and play a key but uncertain role in the atmospheric budgets of carbon dioxide and methane. As ground-based observations in the tropics are scarce co…
View article: Inverse modeling of 2010–2022 satellite observations shows that inundation of the wet tropics drove the 2020–2022 methane surge
Inverse modeling of 2010–2022 satellite observations shows that inundation of the wet tropics drove the 2020–2022 methane surge Open
Atmospheric methane concentrations rose rapidly over the past decade and surged in 2020–2022 but the causes have been unclear. We find from inverse analysis of GOSAT satellite observations that emissions from the wet tropics drove the 2010…
View article: Automated detection of regions with persistently enhanced methane concentrations using Sentinel-5 Precursor satellite data
Automated detection of regions with persistently enhanced methane concentrations using Sentinel-5 Precursor satellite data Open
Methane (CH4) is an important anthropogenic greenhouse gas, and its rising concentration in the atmosphere contributes significantly to global warming. A comparatively small number of highly emitting persistent methane sources are responsi…
View article: Water vapour isotopes over West Africa as observed from space: which processes control tropospheric H <sub>2</sub> O/HDO pair distributions?
Water vapour isotopes over West Africa as observed from space: which processes control tropospheric H <sub>2</sub> O/HDO pair distributions? Open
The West African Monsoon (WAM) represents the main source of rainfall over West Africa and thus has important socio-economic impacts. However, the complex interactions of the large-scale circulation, convective dynamics and microphysical p…
View article: Comment on egusphere-2024-379
Comment on egusphere-2024-379 Open
Abstract. Methane (CH4) is an important anthropogenic greenhouse gas and its rising concentration in the atmosphere contributes significantly to global warming. A comparatively small number of highly emitting persistent methane sources is …
View article: EYE-CLIMA: A Horizon Europe project to support national inventories for emissions of climate forcers
EYE-CLIMA: A Horizon Europe project to support national inventories for emissions of climate forcers Open
National greenhouse gas inventories (NGHGIs) and Biennial Transparency Reports (BTRs) on emissions and removals are crucial elements of the Paris Agreement and its Global Stocktake. However, NGHGIs are subject to significant uncertainties,…
View article: GEMINI-UK: a new UK network of ground-based greenhouse gas observing spectrometers to help track progress&#160;towards net-zero targets
GEMINI-UK: a new UK network of ground-based greenhouse gas observing spectrometers to help track progress towards net-zero targets Open
As part of the UK Greenhouse gas Emissions Measurement Modelling Advancement programme, the National Centre for Earth Observation are establishing the Greenhouse gas Emissions Monitoring network to Inform Net-zero Initiatives for the UK (G…
View article: Automated detection of regions with persistently enhanced methane concentrations using Sentinel-5 Precursor satellite data&#160;
Automated detection of regions with persistently enhanced methane concentrations using Sentinel-5 Precursor satellite data  Open
Methane (CH4) is an important anthropogenic greenhouse gas and its rising concentration in the atmosphere contributes significantly to global warming. A comparatively small number of highly emitting persistent methane sources is responsibl…
View article: The GEMS IUP-UB tropospheric NO2 product &#8211; sensitivity studies and first results
The GEMS IUP-UB tropospheric NO2 product – sensitivity studies and first results Open
Nitrogen oxides (NOx = NO + NO2) are among the most important pollutants in the atmosphere. They impact tropospheric ozone chemistry, contribute to particle formation and adversely affect human health.The monitoring of NO2 is mainly perfor…
View article: A method for estimating localized CO <sub>2</sub> emissions from co-located satellite XCO <sub>2</sub> and NO <sub>2</sub> images
A method for estimating localized CO <sub>2</sub> emissions from co-located satellite XCO <sub>2</sub> and NO <sub>2</sub> images Open
Carbon dioxide (CO2) is the most important anthropogenic greenhouse gas. Its atmospheric concentration has increased by almost 50 % since the beginning of the industrial era, causing climate change. Fossil fuel combustion is responsible fo…