Do we have a global noise change?
2004 (English)In: Eleventh International Congress on Sound and Vibration, 2004Conference paper (Other (popular scientific, debate etc.))
One of the most discussed topics of today is the global climate change or the increased greenhouse effect. The purposes of this study are discussing the effects of the observed global temperature change on the global noise climate and the anthropogenic influence on the noise climate. The past is found to be larger than the effect from temperature change.
Noise measurements of today are compared with measurements within
the last 30 years for a number of well-documented sites in the neighbourhood of Uppsala, Sweden. Old measurements from a number of investigations have been used for the comparisons with measurements of today. The weather has been very well documented for all measurements, as we know that the weather has a fundamental influence on the sound propagation outdoors. Both sound sources and the weather show variances during the day and the year. The weather conditions must be known to make accurate comparisons between measurements. The sites are also studied to investigate if the sound sources have been changed in the nearest surroundings. Conclusions are made for rural sites on the Uppsala Plain and on a site close to the lake Mälaren and for a site in an open area in the forest between Uppsala and Stockholm. The actual sites could be classified as silent areas with background sound levels between 25-35 dB (A).
Place, publisher, year, edition, pages
IdentifiersURN: urn:nbn:se:uu:diva-72194OAI: oai:DiVA.org:uu-72194DiVA: diva2:100105