Claudia AcquistapaceUniversity of Cologne | UOC · Institute of Geophysics and Meteorology
Claudia Acquistapace
Phd
About
30
Publications
6,145
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361
Citations
Citations since 2017
Introduction
Claudia Acquistapace currently works at the Institute of Geophysics and Meteorology, University of Cologne. She is currently in the HDCP2 project, working on evaluation of boundary layer clouds in ICON-LEM using ground-based observations. Her main interest is the onset of warm precipitation in liquid clouds.
Additional affiliations
June 2020 - August 2020
Position
- Eigene stelle Position
Description
- Eigene Stelle position funded within the DFG project "Precipitation life cycle in trade wind cumuli". More info on the project: https://gepris.dfg.de/gepris/projekt/437320342
September 2014 - December 2019
Institute for geophysics and Meteorology, Cologne
Position
- PostDoc Position
Description
- Post doc within HDCP2 project
January 2013 - January 2017
Education
February 2009 - December 2012
September 2003 - February 2009
Publications
Publications (30)
In early 2020, an international team set out to investigate trade-wind cumulus clouds and their coupling to the large-scale circulation through the field campaign EUREC4A: ElUcidating the RolE of Clouds-Circulation Coupling in ClimAte. Focused on the western tropical Atlantic near Barbados, EUREC4A deployed a number of innovative observational stra...
Low-level clouds over the tropical and sub-tropical oceans play a crucial role in the planetary radiative energy budget. However, they are challenging to model in climate simulations because they are affected by local processes that are still partially unknown. The control that mesoscale sea surface temperature structures have on the dynamics of th...
In early 2020, an international team set out to investigate trade wind cumulus and their coupling to the large-scale circulation through the field campaign EUREC4A: ElUcidating the RolE of Clouds‐Circulation Coupling in ClimAte. Focused on the western tropical Atlantic near Barbados, EUREC4A deployed a number of innovative observational strategies,...
As part of the EUREC4A field campaign, the research vessel Maria S. Merian probed an oceanic region between 6 to 13.8∘ N and 51 to 60∘ W for approximately 32 d. Trade wind cumulus clouds were sampled in the trade wind alley region east of Barbados as well as in the transition region between the trades and the intertropical convergence zone, where t...
The science guiding the EUREC⁴A campaign and its measurements is presented. EUREC⁴A comprised roughly 5 weeks of measurements in the downstream winter trades of the North Atlantic – eastward and southeastward of Barbados. Through its ability to characterize processes operating across a wide range of scales, EUREC⁴A marked a turning point in our abi...
jats:p>Abstract. The science guiding the EUREC4A campaign and its measurements is presented. EUREC4A comprised roughly 5 weeks of measurements in the downstream winter trades of the North Atlantic – eastward and southeastward of Barbados. Through its ability to characterize processes operating across a wide range of scales, EUREC4A marked a turning...
As part of the EUREC4A field campaign, the research vessel Maria S. Merian probed an oceanic region between 6° N and 13.8° N and 51° W to 60° W for approximately 32 days. Trade wind cumulus clouds were sampled in the trade-wind alley region east of Barbados as well as in the transition region between the trades and the intertropical convergence zon...
jats:p>Abstract. The science guiding the EUREC4A campaign and its measurements are presented. EUREC4A comprised roughly five weeks of measurements in the downstream winter trades of the North Atlantic – eastward and south-eastward of Barbados. Through its ability to characterize processes operating across a wide range of scales, EUREC4A marked a tu...
To advance the understanding of the interplay among clouds, convection, and circulation, and its role in climate change, the Elucidating the role of clouds–circulation coupling in climate campaign (EUREC4A) and Atlantic Tradewind Ocean–Atmosphere Mesoscale Interaction Campaign (ATOMIC) collected measurements in the western tropical Atlantic during...
The science guiding the EUREC4A campaign and its measurements are presented. EUREC4A comprised roughly five weeks of measurements in the downstream winter trades of the North Atlantic – eastward and south-eastward of Barbados. Through its ability to characterize processes operating across a wide range of scales, EUREC4A marked a turning point in ou...
This article is part of the special issue “Elucidating the role of clouds–circulation coupling in climate:datasets from the 2020 (EUREC4A) field campaign”. It is not associated with a conference.
The MSM89 expedition of Maria S Merian was a contribution to the international research initiative EUREC4A (www.eurec4a.eu). The cruise was carried out in concert with the M161 campaign on RV METEOR (Germany) and the EUREC4A-OA campaign on NO L’ATALANTE (France). Airplane and drone operations as well as well as continuous observations from the grou...
To advance the understanding of the interplay among clouds, convection, and circulation, and its role in climate change, the EUREC4A and ATOMIC field campaigns collected measurements in the western tropical Atlantic during January and February 2020. Upper-air radiosondes were launched regularly (usually 4-hourly) from a network consisting of the Ba...
Clouds and aerosols contribute the largest uncertainty to current estimates and interpretations of the Earth’s changing energy budget. Here we use a new-generation large-domain large-eddy model, ICON-LEM (ICOsahedral Non-hydrostatic Large Eddy Model), to simulate the response of clouds to realistic anthropogenic perturbations in aerosols serving as...
More than one hundred days were simulated over very large domains with fine (0.156 km to 2.5 km) grid spacing for realistic conditions to test the hypothesis that storm (kilometer) and large-eddy (hectometer) resolving simulations would provide an improved representation of clouds and precipitation in atmospheric simulations. At scales that resolve...
Abstract. Clouds and aerosols contribute the largest uncertainty to current estimates and interpretations of the Earth’s changing energy budget. Here we use a new-generation large-domain large-eddy model, ICON-LEM, to simulate the response of clouds to realistic anthropogenic perturbations in aerosols serving as cloud condensation nuclei (CCN). The...
Light shallow precipitation in the form of drizzle is one of the mechanisms for liquid water removal, affecting cloud lifetime and boundary layer dynamics and thermodynamics. The early formation of drizzle drops is of particular interest for quantifying aerosol–cloud–precipitation interactions. In models, drizzle initiation is represented by the au...
presentation given at the ISARS conference, Cologne, May 2018
A boundary layer classification for ICON-LEM has been developed based on the one created for ground based observations at JOYCE. On the basis of such tool, ICON-LEM capabilities of reproducing low level PBL clouds is evaluated on a single case study. Some biases are highlighted and investigated and next steps are planned.
A new criterion to improve drizzle detection from the ground has been developed. The goal is to improve Cloudnet algorithm performances by mean of cloud radar Doppler spectra and moments.
Cloud Doppler radars are increasingly used to study cloud and precipitation microphysical processes. Typical bulk cloud properties such as liquid or ice content are usually derived using the first three standard moments of the radar Doppler spectrum. Recent studies demonstrated the value of higher moments for the reduction of retrieval uncertaintie...
One of the major challenges of climate prediction is a correct representation of the interactions among aerosols, clouds and precipitation. Aerosols have a strong impact on the life cycle of boundary layer clouds, which are known to significantly influence the energy available to the Earth-Atmosphere system. Specifically, drizzle formation in low-l...
Cloud Doppler radars are increasingly used to study cloud and precipitation microphysical processes. Typical bulk cloud properties such as liquid or ice content are usually derived using the first three standard moments of the radar Doppler spectrum. Recent studies demonstrated the value of higher moments for the reduction of retrieval uncertaintie...
Autoconversion describes the mass transfer rate from cloud droplets to embryonic drizzle particles. It is crucial process part of the atmospheric water cycle and plays an important role considering the short and long wave cloud radiative forcing in our climate system. Since autoconversion is a sub-grid-scale process, several parameterizations have...
Stratocumulus clouds are a key contributor to Earth’s radiation budget, however their representation in global climate models (GCMs) remains an open challenge due to the uncertainty in the description of cloud-‐scale microphysical processes including drizzle production. Drizzle formation is one of the main liquid water removal mechanisms and stron...
Clouds play an essential role in Earth’s climate: they are part of the global hydrological cycle, interact with solar long and short wave radiation and are responsible for the vertical transport of energy and mass. Different microphysical processes control cloud lifetime: in warm clouds the autoconversion process leads drizzle production and thus c...
Capsule A state-of-the-art array of scanning remote sensing and in-situ instruments aims to provide insight into the transition of water vapor to clouds and clouds to precipitation under the influence of different forcing conditions. Abstract The Jülich Observatory for Cloud Evolution (JOYCE), located at Forschungszentrum Jülich in the most western...
Precipitation is a fundamental component of the water cycle and
essential to the biosphere as a primary source of fresh water. It
regulates very diverse phenomena as floods and droughts, soil moisture,
ocean salinity and atmospheric circulation associated to the release of
latent heat. For these reasons in recent years many studies have focused
on...
Projects
Projects (5)
The goal of this research proposal is to answer the question of what and how triggers precipitation formation in trade wind cumulus clouds in observations and exploit these data to constrain rain formation process in LES models. An additional goal is to quantify the spatio-temporal distribution of evaporation below cloud base in the trades, understanding on which parameters it mainly depends.
The Project where I did my Phd. I got knowledge on ground based measurements and cloud microphysics
