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Evaluating the significance of the contrail effect on diurnal temperature range using the Eyjafjallajökull eruption-related flight disruption.

Sandhu, Ajvir S. and Baldini, James U. L. (2018) 'Evaluating the significance of the contrail effect on diurnal temperature range using the Eyjafjallajökull eruption-related flight disruption.', Geophysical research letters., 45 (23). 13,090-13,098.

Abstract

Meteorological data collected during the post‐9/11 flight grounding in the USA suggested that the removal of contrails increased diurnal temperature range (DTR), but subsequent research has contested this result. The 2010 Eyjafjallajökull eruption resulted in a 97% flight cancellation rate across the UK, offering another rare opportunity to compare DTR under contrail‐free skies against those with contrails. Temperature data from 199 UK meteorological stations indicate that a +3.4 °C DTR anomaly occurred during the grounding interval across the region previously affected by the highest flight densities, substantially larger than the +1.1 °C anomaly previously observed but smaller than other DTR anomalies (up to ~+6 °C) that were independent of the grounding. Although the observed DTR anomalies are largely attributable to weather system migration, a contribution of up to +1°C from contrail absence appears reconcilable with both the observed time evolution in DTR during the Eyjafjallajökull grounding period and previous results.

Item Type:Article
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1029/2018GL080899
Publisher statement:Sandhu, Ajvir S. & Baldini, James U. L. (2018). Evaluating the significance of the contrail effect on diurnal temperature range using the Eyjafjallajökull eruption-related flight disruption. Geophysical Research Letters. DOI: 10.1029/2018GL080899. To view the published open abstract, go to https://doi.org/ and enter the DOI.
Date accepted:18 November 2018
Date deposited:27 November 2018
Date of first online publication:02 December 2018
Date first made open access:No date available

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