Does the diurnal temperature range respond to changes in the cosmic ray flux?
Recent studies have suggested that measurements of the diurnal temperature range (DTR) over Europe may provide evidence of a long-hypothesized link between the cosmic ray (CR) flux and cloud cover. Such propositions are interesting, as previous investigations of CR–cloud links are limited by data is...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2013-01-01
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| Series: | Environmental Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1748-9326/8/4/045018 |
| _version_ | 1797748042726637568 |
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| author | Benjamin A Laken Jaša Čalogović |
| author_facet | Benjamin A Laken Jaša Čalogović |
| author_sort | Benjamin A Laken |
| collection | DOAJ |
| description | Recent studies have suggested that measurements of the diurnal temperature range (DTR) over Europe may provide evidence of a long-hypothesized link between the cosmic ray (CR) flux and cloud cover. Such propositions are interesting, as previous investigations of CR–cloud links are limited by data issues including long-term reliability and view-angle artifacts in satellite-based cloud measurements. Consequently, the DTR presents a further independent opportunity for assessment. Claims have been made that during infrequent high-magnitude increases (ground level enhancements, GLE) and decreases (Forbush decreases, Fd) in the CR flux significant anti-correlated DTR changes may be observed, and the magnitude of the DTR deviations increases with the size of the CR disturbance. If confirmed this may have important consequences for the estimation of natural climate forcing. We analyze these claims, and conclude that no statistically significant fluctuations in DTR ( p < 0.05) are observed. Using detailed Monte Carlo significance testing we show that past claims to the contrary result from a methodological error in estimating significance connected to the effects of sub-sampling. |
| first_indexed | 2024-03-12T15:59:18Z |
| format | Article |
| id | doaj.art-19552ec030a84c2bafe397fd1d681198 |
| institution | Directory Open Access Journal |
| issn | 1748-9326 |
| language | English |
| last_indexed | 2024-03-12T15:59:18Z |
| publishDate | 2013-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research Letters |
| spelling | doaj.art-19552ec030a84c2bafe397fd1d6811982023-08-09T14:41:44ZengIOP PublishingEnvironmental Research Letters1748-93262013-01-018404501810.1088/1748-9326/8/4/045018Does the diurnal temperature range respond to changes in the cosmic ray flux?Benjamin A Laken0https://orcid.org/0000-0003-2021-6258Jaša Čalogović1https://orcid.org/0000-0002-4066-726XInstituto de Astrofísica de Canarias , Via Lactea s/n, E-38205, La Laguna, Tenerife, Spain; Department of Astrophysics, Faculty of Physics, Universidad de La Laguna , Tenerife, SpainHvar Observatory, Faculty of Geodesy, University of Zagreb , Kaciceva 26, HR-10000, Zagreb, CroatiaRecent studies have suggested that measurements of the diurnal temperature range (DTR) over Europe may provide evidence of a long-hypothesized link between the cosmic ray (CR) flux and cloud cover. Such propositions are interesting, as previous investigations of CR–cloud links are limited by data issues including long-term reliability and view-angle artifacts in satellite-based cloud measurements. Consequently, the DTR presents a further independent opportunity for assessment. Claims have been made that during infrequent high-magnitude increases (ground level enhancements, GLE) and decreases (Forbush decreases, Fd) in the CR flux significant anti-correlated DTR changes may be observed, and the magnitude of the DTR deviations increases with the size of the CR disturbance. If confirmed this may have important consequences for the estimation of natural climate forcing. We analyze these claims, and conclude that no statistically significant fluctuations in DTR ( p < 0.05) are observed. Using detailed Monte Carlo significance testing we show that past claims to the contrary result from a methodological error in estimating significance connected to the effects of sub-sampling.https://doi.org/10.1088/1748-9326/8/4/045018cosmic rayclouddiurnal temperature rangecomposite analysis |
| spellingShingle | Benjamin A Laken Jaša Čalogović Does the diurnal temperature range respond to changes in the cosmic ray flux? Environmental Research Letters cosmic ray cloud diurnal temperature range composite analysis |
| title | Does the diurnal temperature range respond to changes in the cosmic ray flux? |
| title_full | Does the diurnal temperature range respond to changes in the cosmic ray flux? |
| title_fullStr | Does the diurnal temperature range respond to changes in the cosmic ray flux? |
| title_full_unstemmed | Does the diurnal temperature range respond to changes in the cosmic ray flux? |
| title_short | Does the diurnal temperature range respond to changes in the cosmic ray flux? |
| title_sort | does the diurnal temperature range respond to changes in the cosmic ray flux |
| topic | cosmic ray cloud diurnal temperature range composite analysis |
| url | https://doi.org/10.1088/1748-9326/8/4/045018 |
| work_keys_str_mv | AT benjaminalaken doesthediurnaltemperaturerangerespondtochangesinthecosmicrayflux AT jasacalogovic doesthediurnaltemperaturerangerespondtochangesinthecosmicrayflux |