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Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2019. Annual report.
Rapporten presenterer aktiviteter og måleresultater fra klimagassovervåkingen ved Zeppelin observatoriet på Svalbard for årene 2001-2019 og klimagassmålinger og klimarelevante partikkelmålinger fra Birkenes for 2009-2019.
NILU
2020
Målinger av SO2 i omgivelsene til Elkem Carbon og REC Solar. September 2019 – august 2020.
On behalf of Elkem Carbon AS, NILU has carried out measurements of SO2 in the surroundings of Elkem Carbon and REC Solar in Vågsbygd (Kristiansand municipality). The companies were ordered by the Norwegian Environment Agency to carry out SO2 measurements in ambient air. The measurements were performed with an SO2 monitor in the residential area at
Fiskåtangen (Konsul Wilds vei) and with passive SO2 samplers at 6 locations around the industries. The report covers
measurements in the period 1. September 2019 – 31. August 2020. Norwegian limit values for air quality (SO2) were complied with at Konsul Wilds vei for all averaging periods required by the air quality directive (annual average, winter average, daily average and hourly average). The most polluted locations during the measurement period were Konsul Wilds vei and Fiskåveien just south of the industries.
NILU
2020
2020
2020
Environmental pollutants in the terrestrial and urban environment 2019
Prøver fra det urbane terrestriske miljøet i Oslo-området ble analysert for flere uorganiske og organiske miljøgifter. De
utvalgte artene var meitemark, gråtrost, spurvehauk, brunrotte, rødrev og kattugle. Luft- og jordprøver ble også analysert for å øke forståelsen av kilder og opptak av miljøgifter. En næringskjedetilnærming ble valgt for å undersøke trofisk magnifisering av de forskjellige stoffene.
NILU
2020
2020
2020
2020
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2020
Norsk institutt for vannforskning
2020
2020
Revidert tiltaksutredning for lokal luftkvalitet i Stavanger
The air quality assessment for Stavanger covers mapping of the air quality in Stavanger through traffic, emission and dispersion calculations of PM10, PM2,5 and NO2 for the present situation (2018) and future scenarios (2024) with and without measures. Based on the calculations and in coordination with Stavanger municipality, a plan for improved local air quality and a management plan for periods with high concentration levels is proposed for political processing.
NILU
2020
Satellite validation strategy assessments based on the AROMAT campaigns
The Airborne ROmanian Measurements of Aerosols and Trace gases (AROMAT) campaigns took place in Romania in September 2014 and August 2015. They focused on two sites: the Bucharest urban area and large power plants in the Jiu Valley. The main objectives of the campaigns were to test recently developed airborne observation systems dedicated to air quality studies and to verify their applicability for the validation of space-borne atmospheric missions such as the TROPOspheric Monitoring Instrument (TROPOMI)/Sentinel-5 Precursor (S5P). We present the AROMAT campaigns from the perspective of findings related to the validation of tropospheric NO2, SO2, and H2CO. We also quantify the emissions of NOx and SO2 at both measurement sites.
We show that tropospheric NO2 vertical column density (VCD) measurements using airborne mapping instruments are well suited for satellite validation in principle. The signal-to-noise ratio of the airborne NO2 measurements is an order of magnitude higher than its space-borne counterpart when the airborne measurements are averaged at the TROPOMI pixel scale. However, we show that the temporal variation of the NO2 VCDs during a flight might be a significant source of comparison error. Considering the random error of the TROPOMI tropospheric NO2 VCD (σ), the dynamic range of the NO2 VCDs field extends from detection limit up to 37 σ (2.6×1016 molec. cm−2) and 29 σ (2×1016 molec. cm−2) for Bucharest and the Jiu Valley, respectively. For both areas, we simulate validation exercises applied to the TROPOMI tropospheric NO2 product. These simulations indicate that a comparison error budget closely matching the TROPOMI optimal target accuracy of 25 % can be obtained by adding NO2 and aerosol profile information to the airborne mapping observations, which constrains the investigated accuracy to within 28 %. In addition to NO2, our study also addresses the measurements of SO2 emissions from power plants in the Jiu Valley and an urban hotspot of H2CO in the centre of Bucharest. For these two species, we conclude that the best validation strategy would consist of deploying ground-based measurement systems at well-identified locations.
2020