Bernard Lejeune
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View article: Biomass Burning Unlikely to Account for Missing Source of Carbonyl Sulfide
Biomass Burning Unlikely to Account for Missing Source of Carbonyl Sulfide Open
Carbonyl sulfide (OCS) provides a proxy for measuring photosynthesis and is the primary background source of stratospheric aerosols. OCS emissions due to biomass burning are a variable and substantial (over 10%) part of the current OCS bud…
View article: Does training boost the job finding rate of the unemployed ? Timing-of-events based evidence from Belgium
Does training boost the job finding rate of the unemployed ? Timing-of-events based evidence from Belgium Open
This paper evaluates the effectiveness of the training programs offered to the unemployed in Wallonia, the French-speaking part of Belgium. More precisely, we are interested in the two following questions : (a) does training increase the j…
View article: Nonparametric estimation and bootstrap inference on trends in atmospheric time series: an application to ethane
Nonparametric estimation and bootstrap inference on trends in atmospheric time series: an application to ethane Open
Understanding the development of trends and identifying trend reversals in decadal time series is becoming more and more important. Many climatological and atmospheric time series are characterized by autocorrelation, heteroskedasticity an…
View article: Does Formal Child Care Availability for 0–3 Year Olds Boost Mothers' Employment Rate? Panel Data Based Evidence from Belgium
Does Formal Child Care Availability for 0–3 Year Olds Boost Mothers' Employment Rate? Panel Data Based Evidence from Belgium Open
In 2003, a new multi-annual program aimed at increasing the availability of formal child care for 0-3 year old children was launched in Wallonia, the French-speaking part of Belgium. This paper is interested in evaluating if this increased…
View article: Intercomparison of in situ NDIR and column FTIR measurements of CO <sub>2</sub> atJungfraujoch
Intercomparison of in situ NDIR and column FTIR measurements of CO <sub>2</sub> atJungfraujoch Open
We compare two CO2 time series measured at the High Alpine Research Station Jungfraujoch, Switzerland (3580 m a.s.l.), in the period from 2005 to 2013 with an in situ surface measurement system using a nondispersive infrared analyzer (NDIR…
View article: Does formal 0-3 years old child care availability boost employment rate of mothers ? Panel data based evidence from Belgium
Does formal 0-3 years old child care availability boost employment rate of mothers ? Panel data based evidence from Belgium Open
In 2003, a new multi-annual program aimed at increasing the availability of formal child care for 0-3 year old children was launched in Wallonia, the French-speaking part of Belgium. This paper is interested in evaluating if this increased…
View article: Using NDACC column measurements of carbonyl sulfide to estimate its sources and sinks
Using NDACC column measurements of carbonyl sulfide to estimate its sources and sinks Open
(1) Institute of Environmental Physics, University of Bremen, (2) Max-Planck-Institut fur Biogeochemie, (3) Centre for Atmospheric Chemistry, School of Chemistry, University of Wollongong, (4) Colorado State University, (5) Carnegie Instit…
View article: Diurnal cycle and multi-decadal trend of formaldehyde in the remote atmosphere near 46° N
Diurnal cycle and multi-decadal trend of formaldehyde in the remote atmosphere near 46° N Open
Only very few long-term records of formaldehyde (HCHO) exist that are suitable for trend analysis. Furthermore, many uncertainties remain as to its diurnal cycle, representing a large short-term variability superimposed on seasonal and int…
View article: Intercomparison of in-situ NDIR and column FTIR measurements of CO <sub>2</sub> at Jungfraujoch
Intercomparison of in-situ NDIR and column FTIR measurements of CO <sub>2</sub> at Jungfraujoch Open
We compare two CO2 time series measured at the High Alpine Research Station Jungfraujoch (3580 m a.s.l., Switzerland) in the period from 2005 to 2013 with an in-situ surface measurement system using a nondispersive infrared analyzer (NDIR)…
View article: Towards understanding the variability in biospheric CO <sub>2</sub> fluxes: using FTIR spectrometry and a chemical transport model to investigate the sources and sinks of carbonyl sulfide and its link to CO <sub>2</sub>
Towards understanding the variability in biospheric CO <sub>2</sub> fluxes: using FTIR spectrometry and a chemical transport model to investigate the sources and sinks of carbonyl sulfide and its link to CO <sub>2</sub> Open
Understanding carbon dioxide (CO2) biospheric processes is of great importance because the terrestrial exchange drives the seasonal and interannual variability of CO2 in the atmosphere. Atmospheric inversions based on CO2 concentration mea…