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Meteorological Society of New Zealand (Inc.) Meteorological Society of New Zealand Newsletter153 Winter 2018 Page 1 ISSN 0111 - 1736 Meteorological Society Of New Zealand (Inc.) NEWSLETTER 153 Winter 2018 Meteorological Society of New Zealand Newsletter153 Winter 2018 Page 2 Meteorological Society Of New Zealand (Inc.) NEWSLETTER 153 Winter 2018 PO Box 6523, Marion Square, Wellington 6141, New Zealand Please forward contributions to Bob McDavitt, [email protected] CONTENTS Page Foreword from our President 3 Conference 2018 4 Student Report POLAR 2018 5 Around the Regions in Autumn 6 Autumn: NIWA review 7 Notable events 8 - 14 Christchurch, Ben Tichborne 15 Pick of the clips 16 - 52 Your Committee 2018 President Sylvia Nichol Immediate Past President Daniel Kingston Secretary Katrina Richards Treasurer Gregor Macara Circulation Manager Lisa Murray Auckland VP Petra Pearce Hamilton VP Tim Gunn Wellington VP James Renwick Christchurch VP Jiawei Zhang Dunedin VP Daniel Kingston Journal Editor Nava Fedaeff with Jim Renwick Newsletter Editor Bob McDavitt Website Liaison Stefanie Kremser General Committee Mike Revell, Michael Martens Hydrological Society liason Charles Pearson Co - opted by committee Ciaran Doolin Views and endorsements expressed in this newsletter are those of the contributors and advertisers, and not necessarily those of the Meteorological Society of New Zealand. The mention of specific companies or products does not imply that they are endorsed or recommended by the Society. Meteorological Society of New Zealand Newsletter153 Winter 2018 Page 3 Notes from the President ’ s desk Dear Members It gives me great pleasure to let you know that our new website has been up and run- ning for a few weeks now. One of the big changes is that the back - end of the new website now holds the mem- bership database for members who have an email address, and so from now on the website should automacally send email reminders to tell members that their annual subscripon is due. Members who haven ’ t supplied us with an email address will connue to receive an invoice for their annual subscripon through the post. This process should dramacal- ly reduce the workload for our Treasurer and Circulaon Manager in tracking subscrip- on payments. Many thanks are due to our Website Liaison, Stefanie Kremser, for all the work that has gone into this project. I have been very encouraged by the recent news that the chief execuves of 60 com- panies have formed the Climate Leaders Coalion and commied their companies to help New Zealand transion to a low carbon emissions economy. This, along with the recent public consultaon process on the Zero Carbon Bill, shows that we are moving in the right direcon on this important issue. Sylvia Nichol, President NZ Met Society July 2018 Meteorological Society of New Zealand Newsletter153 Winter 2018 Page 4 2018 Conference is in Christchurch from 4 to 7 December with NZ Hydro Soc See hp://nzhsnzms2018.co.nz/ Who ’ s on the Climate Leaders Coalion? See hps://www.climateleaderscoalion.org.nz/ Student ’ s Grant Conference report POLAR2018 – a joint conference of the SCAR (Scienfic Commiee on Antarcc Research and the IASC (Internaonal Arcc Science Commiee) had the appropriate tagline of “ where the poles come together ”. The meeng was held in Davos, Switzerland from the 19 - 23 June 2018. Chris Cameron aended with the support of a Student Travel Grant from the Meteorological Society of New Zealand, and reports back here on his experi- ence. Though I had heard plenty about Davos, as both a hub for snow and ice research and as a winter ski resort, I had not begun to imagine how stunning the scenery would be. An idyllic seng for the conference to be held. My poster presentaon was on day two, and was one of many hundreds of posters on display – with similarly large numbers of viewers. Aer several good discussions, I spoke at some length with the two poster judges about my work. My poster covered the latest findings on my PhD research into the characteriscs of the Antarcc circumpolar strato- spheric vortex - comparing how well it is represented as a mixing barrier in reanalysis compared with the UK MetOffice Unified Model (UM) and how representaon of the vortex in the latest dynamical core of the UM differs from the previous core. Apart from other presentaons on atmospheric science, one of the great benefits of PO- LAR2018 was the ability to aend talks on a wide range of polar related topics. These were fascinang in terms of the range of acvity taking place. Sessions I aended includ- ed: Introducing the new ‘ Iridium Certus ’ satellites for global telecommunicaons The next phase of work for the BBC Frozen Planet documentary series Polar related art, including film and visual art Polar change and the future of society I am very grateful for support from the Meteorological Society for assisng me to aend POLAR2018. Thanks, MetSoc! Chris Cameron Meteorological Society of New Zealand Newsletter153 Winter 2018 Page 6 Parcipants aend a plenary session during POLAR2018 AROUND the REGIONS IN AUTUMN Just one seminar was distributed to regional Met Soc members during autumn, but it was a good one: Wahine Day at Wellington Museum In commemoraon of the 50 th Anniversary of the Wahine Disaster, Wellington Museum hosted a num- ber of special events that will happen during the day – in rememberance of the people who lost their lives, as well as the survivors and first responders who were there fiy years ago. A special Wahine exhibion was displayed in the Museum as well as talks, and there was acknowledg- ment of th e Wahine with bell ringing every half - hour. Including, at 6pm Erick Brenstrum, Expert Meteorologist from the METSERVICE talked about the weather forecast for the 10th April 1968. = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - Meteorological Society of New Zealand Newsletter153 Winter 2018 Page 7 AUTUMN A warm start to autumn, then cooler and unseled at mes. Temperature Nearly all of the North Island observed above average (0.51 to 1.20°C of average) temperatures during autumn, along with isolated pockets of near average ( - 0.50 to 0.50°C of average) and well above aver- age (>1.20°C of average) temperatures. In the South Island, most locaons recorded near average ( - 0.50 to 0.50°C of average) temperatures during autumn, with a handful of staons observing above average (0.51 to 1.20°C of average) temperatures. Rainfall Autumn rainfall in the North Island was generally near normal (80 - 119% of normal) or above normal (120 - 149% of normal), with a handful of locaons also recording well above normal (>149% of normal) rainfall. In the South Island, above normal (120 - 149% of normal) or well above normal (>149% of nor- mal) rainfall was observed in most locaons, with a few spots also recording near normal (80 - 119% of normal) rainfall. Soil moisture As of 1 June, soil moisture was near normal in most of the North Island, along with the western and southern South Island. However, soils were weer or even much weer than normal in small porons of the lower North Island and nearly all of the eastern South Island. Overview Autumn 2018 began on a warm note, as March was characterised by significantly higher pressure than normal to the east of New Zealand. This pressure paern, in concert with the decaying La Niña in the tropical Pacific, caused more northeasterly winds than usual over the country. Warm, humid air mass- es, combined with the remnants of the marine heatwave in the Tasman Sea, influenced higher than usual temperatures over New Zealand as well as some heavy rainfall events. However, the pressure paern for April resulted in more southwesterly winds than normal for much of the country. Several low pressure systems and cold fronts passed over New Zealand, bringing adverse weather to many locaons. Storms occurring on the 10th - 11th and 28th - 29th days of the month were parcularly damaging with the former bringing destrucve winds to Auckland, while the laer brought heavy rain to parts of the country, resulng in flooding and the declaraon of a state of emergency in Rotorua. In May, mean sea level air pressures were much lower than normal over and to the south of New Zea- land. The first half of the month was relavely warm and dry throughout the country. However, during the second half of May, a blocking ancyclone became established over the southeast of Australia, which delivered a prolonged period of disturbed westerly and southwesterly winds over the country. A ridge of high pressure covered the lower South Island during the final days of May, bringing heavy frosts and record cold temperatures to parts of Central Otago, Southland and the Mackenzie Basin. Further highlights The highest temperature was 31.8°C, observed at Kawerau on 5 March. The lowest temperature was - 8.8°C, observed at Mt Cook Airport on 31 May. The highest 1 - day rainfall was 205 mm, recorded at Secretary Island on 19 March. The highest wind gust was 187 km/hr, observed at Akio on 21 May. Of the six main centres in autumn 2018, Auckland was the warmest, Dunedin was the coolest and least sunny, Auckland and Wellington were the equal - weest, Christchurch was the driest, and Tauranga was the sunniest. Contact For further informaon, please contact: Mr Chris Brandolino, Principal Scienst – Forecasng, NIWA Naonal Climate Centre Tel. 09 375 6335, Mobile 027 866 0014 Mr Seth Carrier, Meteorologist/Forecaster, NIWA Naonal Climate Centre Tel. 09 375 4508 Meteorological Society of New Zealand Newsletter153 Winter 2018 Page 8 NOTABLE WEATHER IN NZ – AUTUMN 2018 This autumn was very varied with regards to weather. There were several stormy spells, with a few of them causing severe damage, due to high winds and heavy rain.
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