Found 9759 publications. Showing page 276 of 391:
2020
2014
Effects of rocket launches in Ny-Ålesund, 2018 - 2019. Observations of snow and air samples.
Rapporten oppsummerer resultatene fra ekstra analyser av snøprøver samt pågående overvåkingsaktiviteter i forbindelse med rakettoppskytingen i Ny-Ålesund 7. desember 2018, 26. november 2019 og 10. desember 2019 for å dokumentere mulige påvirkninger av rakettoppskyting på miljøet og overvåkingsaktivitetene i Ny-Ålesund. Det observeres en økt avsetning av Al og Fe i Ny-Ålesund-området som skyldes utslipp fra rakettoppskytingen.
NILU
2021
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2009
Effects of increased biomass removal on the biogeochemistry of two Norwegian forest ecosystems. NILU PP
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2019
2019
The effect of the 2018 extreme meteorological conditions in Europe on methane (CH4) emissions is examined using estimates from four atmospheric inversions calculated for the period 2005–2018. For most of Europe, we find no anomaly in 2018 compared to the 2005–2018 mean. However, we find a positive anomaly for the Netherlands in April, which coincided with positive temperature and soil moisture anomalies suggesting an increase in biogenic sources. We also find a negative anomaly for the Netherlands for September–October, which coincided with a negative anomaly in soil moisture, suggesting a decrease in soil sources. In addition, we find a positive anomaly for Serbia in spring, summer and autumn, which coincided with increases in temperature and soil moisture, again suggestive of changes in biogenic sources, and the annual emission for 2018 was 33 ± 38% higher than the 2005–2017 mean. These results indicate that CH4 emissions from areas where the natural source is thought to be relatively small can still vary due to meteorological conditions. At the European scale though, the degree of variability over 2005–2018 was small, and there was negligible impact on the annual CH4 emissions in 2018 despite the extreme meteorological conditions.
This article is part of a discussion meeting issue ‘Rising methane: is warming feeding warming? (part 2)’.
2021
Effects of climate variability on vegetation and carbon uptake in a North-Norwegian coastal wetland. NILU OR
Greenhouse gas exchange between terrestrial ecosystems and the atmosphere are an important element of the climate system. Especially boreal and polar wetlands and peatlands may play a crucial role for the future development of atmospheric carbon dioxide and methane concentrations, because they contain stores of these gases in the same order of magnitude as the current atmospheric load. The aim of this project was to estimate the fluxes of CO2 and CH4 from an oceanic wetland in North-Norway. Seven years of observations reveal that carbon exchange from this ecosystem is comparable to that of moderate zone coastal wetlands, but distinctly different from alpine and continental wetlands at the same latitude in Sweden and Finland. The seven-year record of meteorological data reveals that the observed period was significantly warmer (especially during winter) and drier (especially in summer) than the climate reference period 1961-1990. Carbon fluxes during the growing season are sensitive to both draught, cold spells and soil climate conditions before the onset of the growing season, but the annual Net Ecosystem Exchange is much less variable.
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