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Cal/Val Activities

VADAM - Validation of ADM-Aeolus L2 aerosol and cloud product employing advanced ground-based lidar Measurements

PI: V. Amiridis

Start date: 2019

Assigned by: European Space Agency

Description: The objective of this proposal is to validate the Aeolus L2A cloud and aerosol spin-off products (supplementary geophysical products) and the related instrument calibration modes and algorithms. The validation will be performed with ground-based Raman/polarization lidar instruments providing unbiased profiles of particle extinction, optical depth, backscatter, extinction-to-backscatter ratio and linear and circular depolarization ratios for clouds and aerosol at 355 nm. Simultaneous measurements will be performed during the ground campaign planned to be carried out at different geo locations. All the selected sites are members of the ACTRIS European Infrastructure Network. The deliverables will include collocated cloud, aerosol and wind observations during satellite overpasses and their analyses as well as conclusions on the Aeolus performance including calibration, correction schemes, and algorithms.

Start: 2019

Start: 2019

ACROSS - Validation of EarthCARE products towards their homogenization with CALIPSO for consolidating the 3Dlong-term ESA-LIVAS climatology of aerosols, clouds and radiation

PI: V. Amiridis

Start date: 2019

Assigned by: European Space Agency

Description: The objective of ACROSS is to perform thorough cal/val investigations on EarthCARE products over Greece, a region well-known for its complex atmospheric environment. The experiments will be designed such as to achieve the following core objectives: (1) to perform a thorough validation of the EarthCARE stand-alone aerosol and cloud products employing sophisticated ground-based remote sensors and spaceborne observations derived from passive and active satellite instruments; (2) to utilize the validated aerosol and cloud products in Radiative Transfer Model (RTM) simulations for depicting radiation and further intercompare with high-quality solar irradiance measurements at surface (ground-based actinometry) and at TOA (space-borne radiometers, including BBR); (3) to expand ESA-LIVAS for including EarthCARE aerosol, cloud and radiation products, and to utilize the RTM developed in step 2 in order to include CALIPSO-based radiation estimations in the existing ESA-LIVAS aerosol and cloud climatic dataset. LIVAS will contribute on the evaluation of the EarthCARE performance in terms of reproducing well-known climatological patterns at global scale.

About Us

ReACT stands for “Remote sensing of Aerosols, Clouds and Trace gases”, to describe the research focus of the respective research team led by Dr. Vassilis Amiridis. ReACT consists of highly motivated scientists within the field of Atmospheric Sciences, combining a number of Post-doc researchers, Ph.D. and M.Sc. students as well as other research and technical staff, using the resources, infrastructure and experience of the Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing (IAASARS).


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Vas. Sofias 79

Phone :

+30 210 81 09 182

Email:

react[at]noa.gr

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