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- Gislason, Sigurdur R., et al.
(författare)
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Direct evidence of the feedback between climate and weathering
- 2009
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Ingår i: Earth and Planetary Science Letters. - : Elsevier BV. - 0012-821X .- 1385-013X. ; 277:02-jan, s. 213-222
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Tidskriftsartikel (refereegranskat)abstract
- Long-term climate moderation is commonly attributed to chemical weathering; the higher the temperature and precipitation the faster the weathering rate. Weathering releases divalent cations to the ocean via riverine transport where they promote the drawdown of CO2 from the atmosphere by the precipitation and subsequent burial of carbonate minerals. To test this widely-held hypothesis, we performed a field study determining the weathering rates of 8 nearly pristine north-eastern Iceland river catchments with varying glacial cover over 44 years. The mean annual temperature and annual precipitation of these catchments varied by 3.2 to 4.5 degrees C and 80 to 530%, respectively during the study period. Statistically significant linear positive correlations were found between mean annual temperature and chemical weathering in all 8 catchments and between mean annual temperature and both mechanical weathering and runoff in 7 of the 8 catchments. For each degree of temperature increase, the runoff, mechanical weathering flux, and chemical weathering fluxes in these catchments are found to increase from 6 to 16%, 8 to 30%, and 4 to 14% respectively, depending on the catchment. In contrast, annual precipitation is less related to the measured fluxes; statistically significant correlations between annual precipitation and runoff, mechanical weathering, and chemical weathering were found for 3 of the least glaciated catchments. Mechanical and chemical weathering increased with time in all catchments over the 44 year period. These correlations were statistically significant for only 2 of the 8 catchments due to scatter in corresponding annual runoff and average annual temperature versus time plots. Taken together, these results 1) demonstrate a significant feedback between climate and Earth surface weathering, and 2) suggest that weathering rates are currently increasing with time due to global warming.
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| 3. |
- Hypönnen, Hannele, et al.
(författare)
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Nordic eHealth Benchmarking
- 2015
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The report presents results of the Nordic eHealth Research Network, a subgroup of the eNordic Council of Ministers Health group. The network defined and collected data for altogether 49 common eHealth indicators from the Nordic Countries. Health information was quite comprehensively electronically available from other organisations in all the Nordic countries by end of 2014. Intensity of use of nationally stored data remained low except in Denmark. Sweden had best availability of the Patient portal functionalities. Patients used patient portal functionalities rarely except in Denmark. Doctors in Iceland had most positive experiences of their health information systems. Even with limitations, the current work presents a solid basis for working towards the goal of the eHealth network: generating comparable information to support development of Nordic welfare.
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| 4. |
- Nøhr, Christian, et al.
(författare)
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Monitoring and benchmarking eHealth in the Nordic countries
- 2018
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Ingår i: Building continents of knowledge in oceans of data. - : IOS Press. - 9781614998518 - 9781614998525 ; 247, s. 86-90
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Bokkapitel (refereegranskat)abstract
- The Nordic eHealth Research Network, a subgroup of the Nordic Council of Ministers eHealth group, is working on developing indicators to monitor progress in availability, use and outcome of eHealth applications in the Nordic countries. This paper reports on the consecutive analysis of National eHealth policies in the Nordic countries from 2012 to 2016. Furthermore, it discusses the consequences for the development of indicators that can measure changes in the eHealth environment arising from the policies. The main change in policies is reflected in a shift towards more stakeholder involvement and intensified focus on clinical infrastructure. This change suggests developing indicators that can monitor understandability and usability of eHealth systems, and the use and utility of shared information infrastructure from the perspective of the end-users - citizens/patients and clinicians in particular.
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