Found 10544 publications. Showing page 95 of 422:
2003
2017
2001
Results from a new multichannel, moderate bandwidth filter instruments for UV and visible irradiance measurements. Proceedings of SPIE, 5156
2003
2024
Response of Total Column Ozone at High Latitudes to Sudden Stratospheric Warmings
The total column ozone (TCO) at northern high latitudes is increased over a course of 1–2 months after a major sudden stratospheric warming as a consequence of enhanced ozone eddy transport and diffusive ozone fluxes. We analyzed ground-based measurements of TCO from Oslo, Andøya and Ny Ålesund from 2000 to 2020. During this time interval, 15 major sudden stratospheric warmings (SSWs) occurred. The observed TCO variations are in a good agreement with those of ECMWF Reanalysis v5 (ERA5), showing that TCO from ERA5 is reliable, even during dynamically active periods. ERA5 has the advantage that it has no data gaps during the polar night. We found that TCO was increased by up to 190 DU after the SSW of February 2010, over one month. The composite analysis of the 15 SSWs provided the result that TCO is increased on average by about 50 DU over one month after the central date of the SSW.
2023
2018
Indoor environments are the dominant setting for human exposure to respiratory viruses, yet routine molecular surveillance of indoor air remains rare outside single-site studies. Within the Horizon Europe TwinAIR project, a single harmonised workflow was applied to 102 indoor air samples (2000 L each) collected between October 2024 and February 2026 at ten pilot settings in Germany, the United Kingdom, Ireland, Spain, Greece and Sweden, covering university teaching rooms, school classrooms and staff rooms, healthcare-associated offices, workplace offices, an elderly care facility and public transport vehicles. Air was collected onto gelatine membrane filters with a Sartorius MD8 Airport sampler, total nucleic acid was extracted with the QIAamp Viral RNA Mini kit, and five targets—SARS-CoV-2, human adenovirus, respiratory syncytial virus A/B, influenza A and rhinovirus—were quantified against target-specific standard curves as genome copies per cubic metre (GC/m3). At least one target was detected in 84 of 102 samples (82.4%; 95% CI 73.8–88.5). SARS-CoV-2 was the most frequent and most abundant target (64.7%; up to 8.36 × 106 GC/m3) and adenovirus was the second most frequent though consistently low in concentration (33.3%); both were recovered from all six countries. Rhinovirus (14.7%, five countries), RSV A/B (8.8%, four) and influenza A (6.9%, four) were detected less often yet reached high concentrations when present, showing that detection frequency alone substantially understates airborne viral burden. Detection of viral genome does not establish infectivity.
2026
2013
Resource guide of scenarios for modelling pollutant transport in Northern Sea Areas. Akvaplan-niva report, APN-1672.04
2000
2018
2008
Research and monitoring of atmospheric persistent organic pollutants (POPs) in the polar atmosphere. From pole to pole
2016
2004