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Innovative Trend Analysis of Total Precipitation, Mean Temperature and Potential Evapotranspiration of Newfoundland
Authors: Sashika Perera, Lakshman Galagedara, Adrian Unc, Chandra Jayasena, Olga Vasilyeva
Identifier: CSBE21669
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Published in: CSBE-SCGAB Technical Conferences » 5th CIGR and AGM Quebec City 2021 » Regular Sessions
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Description: Ability to observe high, medium, and low trends of a hydrological parameter is highly valuable in hydrological studies with applications in fields such as agriculture, forestry, water resources management etc. An attempt was made to detect general trends of total precipitation (PPT), average temperature (Tmean), and potential evapotranspiration (PET - calculated using the Hargreaves-Samani [HS] method) for eight different agriculturally important locations within the island of Newfoundland. Weather data of 34 to 70 years, downloaded from Environment Canada, were used in this analysis. Innovative Trend Analysis (ITA) was applied to obtain such trends, and the Mann-Kendal trend (MK) test was also carried out to cross-validate the results. According to the MK test, positive trends were obtained for PPT except for Corner Brook and St. John?s stations. The ITA results, however, did not replicate said trends for the two stations, showing positive trends for the medium and high levels PPT values for all stations. Increasing Tmean trends were calculated by the MK test for all stations, except Deer Lake, with results confirmed by ITA. The MK test indicated positive trends for PET, as estimated by the HS method, for all locations. However, ITA results indicated no trend for Corner Brook and a generally decreasing trend for Gander. As ITA has no restrictions for non-normality of data, serial correlations and size of the data set, it was decided that ITA produced more plausibly consistent trends for the selected parameters at the studied stations.
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Date: 2021-06-11
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Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: Monitoring, Control and Data Analysis 1
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Type: Text.Abstract
Format:
Publication type: Presentation
Source:
Relation:
Coverage: Canada
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
DOI:
Description: Ability to observe high, medium, and low trends of a hydrological parameter is highly valuable in hydrological studies with applications in fields such as agriculture, forestry, water resources management etc. An attempt was made to detect general trends of total precipitation (PPT), average temperature (Tmean), and potential evapotranspiration (PET - calculated using the Hargreaves-Samani [HS] method) for eight different agriculturally important locations within the island of Newfoundland. Weather data of 34 to 70 years, downloaded from Environment Canada, were used in this analysis. Innovative Trend Analysis (ITA) was applied to obtain such trends, and the Mann-Kendal trend (MK) test was also carried out to cross-validate the results. According to the MK test, positive trends were obtained for PPT except for Corner Brook and St. John?s stations. The ITA results, however, did not replicate said trends for the two stations, showing positive trends for the medium and high levels PPT values for all stations. Increasing Tmean trends were calculated by the MK test for all stations, except Deer Lake, with results confirmed by ITA. The MK test indicated positive trends for PET, as estimated by the HS method, for all locations. However, ITA results indicated no trend for Corner Brook and a generally decreasing trend for Gander. As ITA has no restrictions for non-normality of data, serial correlations and size of the data set, it was decided that ITA produced more plausibly consistent trends for the selected parameters at the studied stations.
Keywords:
Résumé:
Mots-clés:
Citation:
Volume:
Issue:
Pages -
Contributor:
Date: 2021-06-11
Technical field:
Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: Monitoring, Control and Data Analysis 1
Other information:
Type: Text.Abstract
Format:
Publication type: Presentation
Source:
Relation:
Coverage: Canada
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
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