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Meteorological Society of New Zealand Newsletter - Sep 2012 - Page 1 ISSN 0111-1736 Meteorological Society Of New Zealand (Inc.) NEWSLETTER 130 SEPTEMBER 2012 Meteorological Society of New Zealand Newsletter - Sep 2012 - Page 2 Meteorological Society Of New Zealand (Inc.) NEWSLETTER 130 SEPTEMBER 2012 PO Box 6523, Marion Square, Wellington 6141, New Zealand Please forward contributions to Bob McDavitt, [email protected] CONTENTS Page President’s foreword 3 Coming conferences 4-5 Notices 6-7 Winter 2012 (NIWA + Ben Tichborne) 8-18 Winter 2012– pick of the clips 19-54 Notice of AGM 56 Your Committee—until AGM President Andrew Tait [email protected] Immediate Past President Kim Dirks [email protected] Auckland VP Jennifer Salmond [email protected] Wellington VP James Renwick [email protected] Christchurch VP Omid Alizadeh Choobari [email protected] Dunedin VP Daniel Kingston [email protected] Secretary Sam Dean [email protected] Treasurer Alan Porteous [email protected] Circulation Manager Sylvia Nichol [email protected] Journal Editor Brian Giles [email protected] Newsletter Editor Bob McDavitt [email protected] Wed Editor Peter Knudsen Hydro.Soc Liaison: Charles Pearson [email protected] General Committee Mike Revell [email protected] Katrina Richards [email protected] Gareth Renowden [email protected] Duncan Ackerley Duncan@[email protected] 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. Meteorological Society of New Zealand Newsletter - Sep 2012 - Page 3 From our President Time really does ly, doesn't it? Two years ago I had my arm twisted to take on the role of president of the Meteorological Society of ew Zealand - and now, two years later, it's almost time to surrender the reigns to the next arm-twisted candidate. So this is a nice opportunity to share some of my thoughts on the last two years in the Met Soc. Firstly, I couldn't have asked for a better committee. There is a wealth of knowledge and experience (and yes, even some youth) on the Met Soc committee which really does make for an excellent team environment. This has translated into two very well-run annual meetings (in )ellington, jointly with AM,S, and in elson) and the promise of yet another excellent annual event in )ellington in ovem- ber this year. Secondly, we have had some excellent feedback on critical matters for the Socie- ty from the membership - so cheers to you all for this help and guidance. So what have been the big issues for the Society over the last two years, and what have we done about them? )ell, I think many of you will agree with me that the image of the Society (both from a public and professional perspective) needed a makeover. Addressing this, we have changed the presentation format of the articles in our journal, )eather and Climate, to be more consistent with other peer-reviewed scientiic journals and we have been working hard on a new (very nice-looking and well-designed) website. Critically, visitors to the website will have the capa- bility to download historic and, for members only, the most up-to-date articles from )eather and Climate and most importantly they will have the capability to perform keyword searches on all the text within articles (i.e. not just titles). These features (online access to articles and ability to perform keyword searches) will fulil the re.uirements of scholarly search engines (such as /oogle Scholar and )eb of Science) so that articles in )eather and Climate will be seen when users of these services perform searches for papers. This 'realisation' of a long- identiied end goal for Weather and Climate will come in my successors reign, and I wish him or her the very best with achieving it. So, all-in-all I think we've made some good progress over the last couple of years. Thanks to everyone who has helped make my experience as president both enjoyable and intellectually stimulating. 0ooking forward to seeing many of you at the annual conference. Andrew Tait Meteorological Society of New Zealand Newsletter - Sep 2012 - Page 4 Annual Conference 1egistration Monday 13 ovember 4 Tuesday 20 ovember 2012 Copthorne ,riental 7ay 8otel, 100 ,riental Parade, )ellington Final day for registration9 )ednesday 31 ,ctober, 2012 Please complete all ields and email as an attachment to9 [email protected] Payment Details The full registration fee is $195 (two days). The single day rate is $110. Extra dinner guest is $60. Please make payment to the following account (include your name in the reference ield)9 Account name9 Meteorological Society of ew Zealand Account number9 02-0A00-073C433-0CC 1eceipts will be issued upon conirmation of payment. First name Surname Position ,rganisation Postal address (1) Postal address (2) Postal address (3) Post code City Email Telephone Will attend conference dinner? 7:00 pm - 10:00 pm, Copthorne Oriental Bay Hotel (included in your registration fee) (please underline selection) Yes No Any special dietary re.uirements or physical disability? Any other information Full registration $ Single day registration $ Additional dinner guests $ Total payment $ Meteorological Society of New Zealand Newsletter - Sep 2012 - Page 6 ews from the branches Dunedin members were, in April, invited to a talk held by the ,tago Physics department on solar activity and polar climate, given by Mark Clilverd, 7AS. Wellington members were invited to 3 seminars. ,n 3 August the /eographical Society hosted Prof. Martin ManningEs talk on FCan science deal with a once-only experiment called climate change'. ,n 30 August, Prof. Dave Frame spoke about G/reenhouse gas metrics9 A guide for the per- plexed’ (part of the VUW Climate Change Research Institute [CCRI] seminar series). On 20 September, Prof. Jean Palutikof spoke on ‘Flood, famine and dangerous weather: What can the past tell us about adapting to future climate change?’ (again part of the CCRI seminar series). Auckland Downpour: From Brian Giles, Auckland member and editor of our Journal: Around noon on 3 July 2012 a severe thunderstorm crossed the Auckland isthmus moving south. The Meteorological Service had issued a severe thunderstorm warning (the criteria being: rainfall intensity greater than 24mm/hr, hail over 19mm, wind gusts over 110km/h and sig tornado). The warning is shown here was posted on the MetService New Zealand Facebook page: [Downloaded 11 July 2012 from http://www.facebook.com/MetService ] The media reported various loods and wind damage as well as a seal inding refuge in Pen- rose. The next morning the ew Zealand 8erald reported several eye witness accounts and videos can be seen at http9MMwww.nzherald.co.nzMamelia-wadeMnewsMarticle.cfm?a_idOC33PobjectidO10817244 and http9MMwww.nzherald.co.nzMnationalMnewsMvideo.cfm?c_idO1A0307APgal_cidO1A0307APgallery_idO12CA3C. Meteorological Society of New Zealand Newsletter - Sep 2012 - Page 7 But how bad was it? The heavy rain certainly came and exceeded the amount in the warning. 7ut it was short lived. In a personal communication from Dan Corbett (MetService) the rain gauge at Albert Park recorded 30mm in 33 minutes (1311 to 1344) and the most intense rain was from 131Chr to 1342hr when 2C.Amm fell in 2C minutes. ,ther stations across the city reported similar very heavy but short downpours. Albany in the north had 12.4mm in 30 min (1233-1303). In the west of the city in 8enderson 12.Amm arrived in 30 minutes (1232-1312) while at ,ratia there was 12.7mm in 30 minutes 1230-130A) including a fall of 7.3mm in 1A min. earer the city centre at /rey 0ynn 31.Amm fell in 3A minutes (12A341334) and at Mt 1oskill 2A.2mm fell in between 1310 and 1340 (30 minutes)R at this most of the daily total of 4C.7 fell between 1300 and 1440.. Further south at Mangere 7ridge falls were less intense with 13.Amm falling in 2A minutes (1321-134C). This data was obtained from the automatic weather stations that are reported by )eather In- derground website, the link to /rey 0ynn for example is at http://www.wunderground.com/weatherstation/WXDailyHistory.asp?ID=IAUCKLAN7. These stations usually record weather elements at 5 min intervals with rainfall given as both an hourly rate and as a days accumulation at each measuring time. Since the times vary very slightly from day to day and station to station they can be centred at speciic A minute inter- vals so comparisons can be made. The graph below was constructed from this data and shows the rainfall intensity from 0300 to 1C00 at 11 stations across Auckland from north to south. The times of peak rates is very consistent across the city with a tendency to occur slightly lat- er as the storm moved south. The shape of the graphs also varies with a short sharp peak at Devonport, )aitakere, Mission 7ay, and Mangere 7ridge but a wider peak at 7ayview, /rey 0ynn and 7lockhouse 7ay. Brian Giles, 14 July 2012 Survey of weather websites9 At the 2012 Met Soc Annual Conference we intend to present our indings into the most popu- lar, appealing and useful weather web sites for ew Zealanders. /oggle and other web rank- ings only give part of the picture. As part of our investigation we are inviting you to contribute by partaking in a survey at https9MMwww.surveymonkey.comMsMmetsoc2012 Newsletter editor Bob McDavitt Meteorological Society of New Zealand Newsletter - Sep 2012 - Page 8 )inter 2012 A season of two halves9 cold and dry, then wet and warm Temperature The irst half of winter was colder than usualR the second half of winter was unusually mild.