The main goal of our proposal is to characterize the surface radiative budget as well as cloudiness which features at the Argentine Bases Marambio and Belgrano II during the YOPP-SH Special Observing Period (SOP) as well as the YOPP Consolidation Phase 1 - radiation components at the surface, including global, diffuse and direct solar radiation, upwelling SW component, LW downwelling and upwelling fluxes, as well as spectral UV radiation. 2 - Cloudiness features, including, on a continuous base, cloud fraction derived both from radiometric measurement and sky camera observations, cloud type and cloud effect on SW radiation, estimate of Cloud radiative forcing (CRF), cloud base from routine observations performed at the station. 3 - From UV spectral measurements derived quantity as columnar ozone and erythemal dose. All above parameters and evaluated quantities will be carry out at the two Argentine stations of Marambio and Belgrano II

DOC fractionation: dynamic of POPs and trace metals Arctic DOC (ArcticDOC) The sampling design is projected to cover almost five sampling points in the Kongsfjorden. The sampling of surface water (approximately 100 liters for each sampling point) and sediment are aimed at the determination of persistent and emerging contaminants: POPs PFAS, CUPs, PPCPs, endocrine disruptors such as nonylphenols and bisphenol A. At the same time, with tangential-flow ultrafiltration, dissolved organic matter (DOM) will be characterized according to size fractions (colloidal and truly dissolved) and the distribution of contaminants associated to these fractions will be evaluated.