About
23
Publications
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Introduction
Detection and characterization of land cover/land use changes from Earth Observation data
Current institution
Additional affiliations
November 2024 - present
Cirad - La recherche agronomique pour le développement (Tetis)
Position
- PostDoc Position
Description
- Topic: Formalization of Land rights: Agricultural Impacts from Remote sensing – Case of Benin
September 2010 - December 2015
Position
- Research Engineer
Description
- Satellite data management and scientific research. Application of data mining in satellite observations to differentiate emission sources;
November 2020 - February 2024
Position
- PhD Student
Description
- Remote sensed detection and characterization of agricultural large-scale land acquisitions (LSLAs)at regional scale
Education
November 2020 - February 2024
September 2018 - July 2020
September 2000 - September 2006
Publications
Publications (23)
As global land cover/ land use change (LULCC) threatens the human’s well-being, accurate detection and characterization of LULCC is of paramount importance. The increasing availability of dense satellite image time series (SITS), together with the ever-improving change detection algorithms, has allowed significant progress to be made. However, much...
***Link: https://nextcloud.inrae.fr/s/DkTn4JbnTa2NpgM *** Increasing demand for water, food and energy has led to dramatic competition for land, resulting in a global land rush in the form of large scale agricultural investments (LSAI). Due to their many potential negative impacts and the opacity of their surroundings, accurate detection and charac...
Keywords: SITS Land use land cover change BFAST MODIS NDVI LSLA A B S T R A C T In the context of Global Change Research, detection, monitoring and characterization of land use/land cover (LULC) changes are of prime importance. The increasing availability of dense satellite image time series (SITS) has led to a shift in the change detection paradig...
We present global distributions of C2H2 and HCN total columns derived from the Infrared Atmospheric Sounding Interferometer (IASI). These distributions are obtained with a fast method allowing to retrieve C2H2 abundance globally with a 5% precision and HCN abundance in the tropical (subtropical) belt with a 10% (30%) precision. IASI data are compar...
We present global distributions of C2H2 and hydrogen cyanide (HCN) total columns derived from the Infrared Atmospheric Sounding Interferometer (IASI) for the years 2008–2010. These distributions are obtained with a fast method allowing to retrieve C2H2 abundance globally with a 5 % precision and HCN abundance in the tropical (subtropical) belt with...
Vegetation fires emit important amounts of trace gases in the atmosphere. They contribute to about, respectively, 16% and 11% of NH3 and NO2 global emissions and could even rival with anthropogenic emissions for CO. These emissions have important impacts on the environment (e.g. eutrophication, loss of plant diversity), climate and human health (e....
Ammonia (NH3) emissions in the atmosphere have increased substantially
over the past decades, largely because of intensive livestock production and
use of fertilizers. As a short-lived species, NH3 is highly variable in
the atmosphere and its concentration is generally small, except near local
sources. While ground-based measurements are possible,...
Ammonia (NH3) emissions in the atmosphere have strongly increased in the past decades, largely because of the intensive livestock production and use of fertilizers. As a short-lived species, NH3 is highly variable in the atmosphere and its concentration is generally small, except in and close to local source areas. While ground-based measurements a...
Existing descriptions of bi-directional ammonia (NH3) land-atmosphere exchange incorporate temperature and moisture controls, and are beginning to be used in regional chemical transport models. However, such models have typically applied simpler emission factors to upscale the main NH3 emission terms. While this approach has successfully simulated...
In July 2010, several hundred forest and peat fires broke out across central Russia during its hottest summer on record. Here, we analyze these wildfires using observations of the Infrared Atmospheric Sounding Interferometer (IASI). Carbon monoxide (CO), ammonia (NH3) and formic acid (HCOOH) total columns are presented for the year 2010. Maximum to...
In July 2010, several hundred forest and peat fires broke out across
Central Russia during its hottest summer on record. Here, we analyze
these wildfires using observations of the Infrared Atmospheric Sounding
Interferometer (IASI). Carbon monoxide (CO), ammonia (NH3)
and formic acid (HCOOH) total columns are presented for the year 2010.
Maximum to...
The natural nitrogen cycle is significantly perturbed by anthropogenic atmospheric emissions of reactive nitrogen compounds resulting from our production of energy and food. Ammonia (NH3) is one of the largest contributors to reactive nitrogen and the principal alkaline component in our atmosphere. In the last century global ammonia emissions have...
Vegetation fires are a major source of atmospheric trace gases and aerosols. Many studies have been conducted in the past to characterize locally the composition of biomass burning plumes and the chemistry that takes place within the vicinity of the source. However, there are fewer analyses of the plume chemistry during long-range transport and, as...
The "Support to Aviation Control Service" (SACS;
http://sacs.aeronomie.be) is an ESA-funded project hosted by the Belgian
Institute for Space Aeronomy. The service provides near real-time (NRT)
global SO2 and volcanic ash data, as well as alerts in case of volcanic
eruptions. The SACS service is primarily designed to support the
Volcanic Ash Adviso...
Thermal infrared sounding of sulphur dioxide (SO<sub>2</sub>) from space has gained appreciation as a valuable complement to ultraviolet sounding. There are several strong absorption bands of SO<sub>2</sub> in the infrared, and atmospheric sounders, such as AIRS (Atmospheric Infrared Sounder), TES (Tropospheric Emission Spectrometer) and IASI (Infr...
Thermal infrared sounding of sulphur dioxide (SO2) from space
has gained appreciation and popularity as a valuable complement to
ultraviolet sounding. There are several strong absorption bands of
SO2 in the infrared, and atmospheric sounders, primarily
designed for weather forecasting, have therefore often the ability to
globally monitor SO2 abunda...
Using 3 years worth of IASI (the Infrared Atmospheric Sounder Interferometer aboard METOP-A) measurements, we have identified 24 major events of uplift and transport of anthropogenic sulfur dioxide. These were all first observed over East Asia, and could be traced for over 60 hours. On 7 November 2010 a sulfur dioxide plume was observed over Northe...
Recently, satellite sounders have demonstrated the possibility to probe atmospheric ammonia which opens new and unexpected perspectives to monitor that species (Beer et al., 2008; Clarisse et al., 2009; Coheur et al., 2009). We use the 3 years of IASI data to identify a multitude of hotspots, notably over biomass burning regions and agricultural ar...
