A5048543790- Atmospheric Ozone and Climate
- Atmospheric chemistry and aerosols
- Atmospheric aerosols and clouds
- Atmospheric and Environmental Gas Dynamics
- Geophysics and Gravity Measurements
- Isotope Analysis in Ecology
- Earthquake Detection and Analysis
- Chemical Thermodynamics and Molecular Structure
- Ionosphere and magnetosphere dynamics
- Climate variability and models
- Science and Climate Studies
Lund University
2022-2024
Abstract Natural aerosol feedbacks are expected to become more important in the future, as anthropogenic emissions decrease due air quality policy. One such feedback is initiated by increase biogenic volatile organic compound (BVOC) with higher temperatures, leading secondary (SOA) production and a cooling of surface via impacts on cloud radiative properties. Motivated considerable spread strength Earth System Models (ESMs), we here use two long-term observational datasets from boreal...
Marine dimethyl sulfide (DMS) emissions are the dominant source of natural sulfur in atmosphere. DMS oxidizes to produce low-volatility acids that potentially nucleate form particles may grow into climatically important cloud condensation nuclei (CCN). In this work, we utilize chemistry transport model ADCHEM demonstrate likely contribute majority CCN during biological active period (May-August) at three different forest stations Nordic countries. increases concentrations by forming...
Abstract Explosive volcanic eruptions can reach the stratosphere and cause elevated concentrations of sulphate particles for months to years. When these descend into troposphere, they impact cirrus clouds though what degree is unknown. In this study, we combine three satellite data sets investigate downwelling aerosol on midlatitude during springtime. The results show that in northern hemisphere (NH) have lower ice water content (IWC), crystal number concentrations, cloud fraction (CF) when...
Abstract. Representing detailed atmospheric aerosol processes in global Earth system models (ESMs) has proven challenging both from a computational and parameterization perspective. The representation of secondary organic (SOA) formation new particle (NPF) large ESMs are generally constructed with low detail to save costs. simplification could result losing the some processes. In this study, we test evaluate approach for improving description NPF ESM EC-Earth3 (ECE3) without loss significant...
Abstract. Representing detailed atmospheric aerosol processes in global Earth system models (ESMs) has proven to be challenging from both a computational and parameterization perspective. The representation of secondary organic (SOA) formation new particle (NPF) large ESMs is generally constructed with low detail save costs. simplification could result losing the some processes. In this study, we test evaluate approach for improving description NPF ESM EC-Earth3 (ECE3) without significant...
Abstract. Realistic representation of atmospheric aerosol size distribution dynamics in large scale climate models is important for developing accurate descriptions aerosol-cloud interactions. Despite the dynamic nature distributions, which have seasonal and diurnal changes, model evaluations often focus on annual median distribution. Using more comprehensive monthly illustrations can be crucial evaluating performance potential effects short term variations. In this study, we assess impact a...
Representing detailed atmospheric aerosol processes in global climate models has proven challenging from both a computational and parameterization perspective. A recent study on different Earth System Models (ESM) responses to small changes the precursors new particle formation (NPF) showed that two can produce opposite radiative outcomes response removal of isoprene emissions (atmospheric cooling versus warming; Sporre et al., 2020).Here, we examine test rate schemes sensitivity ESM...
<p>Explosive volcanic eruptions can reach the stratosphere and cause elevated concentrations of sulfate particles for months to years. When these descend into troposphere they impact cirrus clouds, though what degree is unknown. In this study we combine three satellite datasets investigate downwelling aerosol on midlatitude clouds during springtime. The results show that in northern hemisphere (NH) have lower ice water content (IWC), crystal number cloud fraction (CF) when load...