ASKOS Campaign Dataset

DOI

10.60621/jatac.campaign.2021.2022.caboverde

Publisher

ESA Atmospheric Validation Data Centre

Creators

Marinou, Eleni

Publication Year

2023

Resource Type

Dataset

Subject

Atmospheric Science: ASKOS campaign incorporates the dataset collected from 14 instruments during the Joint Aeolus Tropical Atlantic Campaign (JATAC) in Cabo Verde 2021 and 2022. The dataset is available at the EVDC Data Handling Facilities.

Contributors

Vassilis, Amiridis (Project Leader)

Eleni, Marinou (Campaign Organizer)

Peristera, Paschou (eVe lidar PI)

Holger, Baars (PollyXT lidar PI, HALO Wind lidar, CIMEL sun-photometer, Microwave radiometer Co-PI)

Razvan, Pirloaga (Cloud Radar PI)

Engelmann, Ronny (PollyXT lidar Co-PI, CIMEL sun-photometer, Microwave radiometer PI)

Alexandra, Tsekeri (Walle lidar PI)

Ioanna, Tsikoudi (Radiosondes PI)

Vasiliki, Daskalopoulou (Electric Sensors PI)

Stelios, Kazadzis (Actinometric Platform PI)

Skupin, Annett (Mindelo ACTRIS station PI)

Franco, Marenco (CyI UAV Measurements PI)

Maria, Kezoudi (CyI UAV Measurements Co-PI)

Dimitra, Kouklaki (Actinometric Platform co-PI)

Nikolaos, Siomos (eVe lidar measurements co-PI)

Floutsi, Athena Augusta (PollyXT lidar co-PI)

Spiros, Metallinos (Walle lidar measurements)

Vasileios, Spanakis Misirlis (Electricity sensor measurements)

Panagiotis, Raptis (Actinometric Platform co-PI)

Althausen, Dietrich (PollyXT lidar Co-PI)

Seifert, Patric (Microwave radiometer Co-PI)

Nemuc, Anca (Cloud Radar Co-PI)

Antonescu, Bogdan (Cloud Radar Co-PI)

Alkistis, Papetta (CyI UAV Measurements)

Wandinger, Ulla (TROPOS project lead)

Dates

Created: 2023-07-17

Issued: 2023

Data Format

GEOMS.nc and ASCII

Data Policy

Creative Commons Attribution-4.0 International (CC-BY 4.0)

In addition to the CC BY license, the EVDC and JATAC Data Use Agreements including publication co-authorship policy must always be respected see https://protocol.evdc.nilu.no/ and https://jatac-protocol.evdc.nilu.no/

Descriptions

Abstract:The dataset includes measurements from 14 instruments operated during the ASKOS campaign in 2021 and 2022 which are presented herein. A multiwavelength Raman-polarization lidar (PollyXT-type) provides continuous profiles of the particle backscatter and extinction coefficients at 355, 532, 1064 nm, the lidar ratio at 355 and 532 nm, the volume and particle linear depolarization ratios at 355 and 532 nm, the angstrom exponent (355/532 nm, 532/1064 nm), and the water vapor mixing ratio [Engelmann et al., 2016; Baars et al., 2016]. An AERONET sun-photometer provides daytime solar irradiances and aerosol optical depth (AOD) at 8 wavelengths (from 340 to 1640 nm), angstrom exponent (440/870), volume size distribution, refractive index, single scattering albedo, absorption and extinction AOD, asymmetry factor, phase functions at 4 wavelengths (from 440 to 1020 nm) [Holben et al., 1998]. A scanning Doppler wind lidar (HALO-type), provides continuous horizontal wind speed and direction, attenuated backscatter coefficient (1.5 um), and vertical velocity [Pearson et al., 2009]. A microwave radiometer (RPG-type), provided continuous Liquid water path (LWP), and integrated water vapor content (IWV) [Rose et al., 2005]. A cloud radar (RPG-type 94 GHz), provides continuous information on the vertical structure of the clouds (e.g.Doppler velocity, reflectivity, LWC profiles) [Kuechler et al., 2017]. The eVe lidar, which is ESAs ground reference linear/circular polarization lidar system with Raman capabilities, provides profiles of the particle backscatter and extinction coefficients and lidar ratio retrieved using the linear and the circular emission, and the linear and circular depolarization ratios at 355 nm. Additionally, eVe provides the Aeolus-like backscatter coefficient and Aeolus-like lidar ratio for the validation of the Aeolus L2A products [Paschou et al., 2022]. An actinometric platform along with a net radiation instrument provides the total (Global), direct and diffuse shortwave irradiances (280-2800 nm), the net shortwave (300-2800 nm) and longwave (4500-42000 nm) radiation, and the upwelling and downwelling irradiance during daytime. There are various studies using solar measuring broadband detectors for long term changes [Kazadzis et al., 2018] or campaign based specific studies [Masoom et al., 2023]. The polarization lidar WALL-E provides measurements of particle orientation [Tsekeri et al., 2021]. Meteorological radiosondes (DFM-09-type) provide profiles of the atmospheric parameters of temperature, pressure, relative humidity and wind speed and direction [Dabberdt and Turtiainen, 2015]. Moreover, meteorological radiosondes tethered with atmospheric electricity sensors (electrosondes) provide the vertical electric field strength and the space charge density [Daskalopoulou et al., 2021b, Mallios et al., 2023 ]. A ground-based fieldmill electrometer (JCI 131 FM) provides continuous near surface electric strength measurements [Daskalopoulou et al., 2021a]. Unmanned aerial vehicles (UAVs) of the Unmanned Systems Research Laboratory (USRL) of the Cyprus Institute, were equipped with Optical Particle Counters (OPCs) for fine- and coarse-mode height-resolved observations, Compact Optical Backscatter Aerosol Detectors (COBALDs)[Brunamonti et al., 2021] and impactor samplers for collecting particles within dust layers. In particular, the Printed Optical Particle Spectrometer (POPS) [ Gao et al., 2016] and Universal Cloud and Aerosol Sounding System (UCASS) [Smith et al., 2019] OPCs are integrated on-board the UASs and measure aerosol number concentration and size distributions in the diameter from 0.14 to 3.30 um, and 0.8 to 77 um, respectively. In addition, the COBALD is a lightweight sonde that uses two high-power light-emitting diodes (LEDs) operating at 455 nm (blue) and 940 nm (infrared), and detects the backscatter light from air molecules, aerosol, or cloud droplets.

Locations

Location: Mindelo, Cabo Verde

Latitude: 16.878

Longitude: -24.995

Funding

Funding provided by the ESA ASKOS project (contract no. 4000131861/20/NL/IA)

D-TECT ERC Consolidator Grant funded by the European Research Council (ERC, Grant Agreement 725698)

This research was financially supported by the PANGEA4CalVal project (Grant Agreement 101079201) funded by the European Union

This research has been supported by the ESA projects of NEWTON (contract no.4000133130/20/I-BG//Aeolus+ Innovation (Aeolus+I)), DOMOS (contract no. 4000135024/21/I-NB), L2A+ (Contract no. 4000139424/22/I-NS//Aeolus+ Aerosols), ADD-CROSS (PO EUM/COS/LET/21/1249524), ACPV (Contract no. 4000140645/23/I-NS)

This project has received funding from the European Unions Horizon 2020 research and innovation programme under grant agreement No. 856612 and the Cyprus Government

DAZSAL was supported under Horizon 2020 through the ATMO-ACCESS Integrating Activity under grant agreement No 101008004

This research has been supported by the German Federal Ministry for Economic Affairs and Energy (BMWi) (grant no. 50EE1721C)

The Cloud radar purchased within FRM4RADAR project

Many thanks to the Cesaria Evora International Airport and the Ocean Science Centre Mindelo for their support, which has been decisive for the success of this campaign

Download Data

https://secondary-data-archive.nilu.no/evdc/aeolus/jatac_campaing_2021_2022_caboverde/ (Version1 native format)