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Changes in the magnitude-frequency of large rainstorms and the year-to-year variability of rainfall in Malaysia. / Stephen Thomas Ellison

Swansea University Author: Stephen Thomas Ellison

Abstract

Changes in the magnitude-frequency of large rainstorms and the year-to-year variability of rainfall in Malaysia The aims of the thesis were to investigate changes in: 1. the magnitude-frequency of large rainstorms in Malaysia over a longer timescale than previously examined, 2. seasonal and annual r...

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Published: 2006
Institution: Swansea University
Degree level: Master of Philosophy
Degree name: M.Phil
URI: https://cronfa.swan.ac.uk/Record/cronfa42475
first_indexed 2018-08-02T18:54:48Z
last_indexed 2019-10-21T16:47:53Z
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recordtype RisThesis
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spelling 2018-08-16T14:39:02.9105634 v2 42475 2018-08-02 Changes in the magnitude-frequency of large rainstorms and the year-to-year variability of rainfall in Malaysia. e64224e244424814207733e70aec7572 NULL Stephen Thomas Ellison Stephen Thomas Ellison true true 2018-08-02 Changes in the magnitude-frequency of large rainstorms and the year-to-year variability of rainfall in Malaysia The aims of the thesis were to investigate changes in: 1. the magnitude-frequency of large rainstorms in Malaysia over a longer timescale than previously examined, 2. seasonal and annual rainfall for the region, 3. year-to-year variability in annual totals and high magnitude rainfall events Data were collected from a variety of archival sources including rainfall statistics from the British North Borneo Herald and the Sarawak Gazette from the early 20th century. Rainfall records from the post-war period were gathered from a store at the Malaysian Meteorological Service in Kota Kinabalu, Sabah. Monthly and annual totals to complete rainfall series at stations across Malaysia were obtained from ASEAN publications in 1982 and 2004. Recent data were provided by the Malaysian Meteorological Service both in Kuala Lumpur and Kota Kinabalu. Results suggest that there has been no region-wide change in the magnitude or frequency of extreme rainfall events. Only at Kota Kinabalu was a rainfall decrease found to be statistically significant. Decreases in annual rainfall and an increase in years with low rainfall totals occurred in the northern regions in Peninsular Malaysia and the northwest coast of Borneo. Only the major ENSO events produce negative anomalies across the whole region. Weak and moderate ENSO events caused both high and low annual totals. Sea surface temperatures along with other factors such as wind speed, wind direction, the ITCZ and upper air circulation may have been responsible for the weak correlations found between ENSO events and rainfall events and totals throughout Malaysia. E-Thesis Meteorology.;Southeast Asian studies. 31 12 2006 2006-12-31 COLLEGE NANME Geography COLLEGE CODE Swansea University Master of Philosophy M.Phil 2018-08-16T14:39:02.9105634 2018-08-02T16:24:29.3845914 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Geography Stephen Thomas Ellison NULL 1 0042475-02082018162457.pdf 10798183.pdf 2018-08-02T16:24:57.4170000 Output 24179844 application/pdf E-Thesis true 2018-08-02T16:24:57.4170000 false
title Changes in the magnitude-frequency of large rainstorms and the year-to-year variability of rainfall in Malaysia.
spellingShingle Changes in the magnitude-frequency of large rainstorms and the year-to-year variability of rainfall in Malaysia.
Stephen Thomas Ellison
title_short Changes in the magnitude-frequency of large rainstorms and the year-to-year variability of rainfall in Malaysia.
title_full Changes in the magnitude-frequency of large rainstorms and the year-to-year variability of rainfall in Malaysia.
title_fullStr Changes in the magnitude-frequency of large rainstorms and the year-to-year variability of rainfall in Malaysia.
title_full_unstemmed Changes in the magnitude-frequency of large rainstorms and the year-to-year variability of rainfall in Malaysia.
title_sort Changes in the magnitude-frequency of large rainstorms and the year-to-year variability of rainfall in Malaysia.
author_id_str_mv e64224e244424814207733e70aec7572
author_id_fullname_str_mv e64224e244424814207733e70aec7572_***_Stephen Thomas Ellison
author Stephen Thomas Ellison
author2 Stephen Thomas Ellison
format E-Thesis
publishDate 2006
institution Swansea University
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Geography{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Geography
document_store_str 1
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description Changes in the magnitude-frequency of large rainstorms and the year-to-year variability of rainfall in Malaysia The aims of the thesis were to investigate changes in: 1. the magnitude-frequency of large rainstorms in Malaysia over a longer timescale than previously examined, 2. seasonal and annual rainfall for the region, 3. year-to-year variability in annual totals and high magnitude rainfall events Data were collected from a variety of archival sources including rainfall statistics from the British North Borneo Herald and the Sarawak Gazette from the early 20th century. Rainfall records from the post-war period were gathered from a store at the Malaysian Meteorological Service in Kota Kinabalu, Sabah. Monthly and annual totals to complete rainfall series at stations across Malaysia were obtained from ASEAN publications in 1982 and 2004. Recent data were provided by the Malaysian Meteorological Service both in Kuala Lumpur and Kota Kinabalu. Results suggest that there has been no region-wide change in the magnitude or frequency of extreme rainfall events. Only at Kota Kinabalu was a rainfall decrease found to be statistically significant. Decreases in annual rainfall and an increase in years with low rainfall totals occurred in the northern regions in Peninsular Malaysia and the northwest coast of Borneo. Only the major ENSO events produce negative anomalies across the whole region. Weak and moderate ENSO events caused both high and low annual totals. Sea surface temperatures along with other factors such as wind speed, wind direction, the ITCZ and upper air circulation may have been responsible for the weak correlations found between ENSO events and rainfall events and totals throughout Malaysia.
published_date 2006-12-31T04:38:31Z
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score 11.363283

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