A5074072408- Atmospheric chemistry and aerosols
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Climate Change Communication and Perception
- Polar Research and Ecology
- Ocean Acidification Effects and Responses
- Cryospheric studies and observations
- Service-Learning and Community Engagement
- Interdisciplinary Research and Collaboration
- Marine and coastal ecosystems
- Resilience and Mental Health
- Climate Change and Sustainable Development
- Animal and Plant Science Education
- Air Quality and Health Impacts
- Higher Education Learning Practices
- Conferences and Exhibitions Management
- Supply Chain Resilience and Risk Management
- Social Acceptance of Renewable Energy
- Climate Change, Adaptation, Migration
- Disaster Response and Management
- Species Distribution and Climate Change
- Reflective Practices in Education
- Arctic and Antarctic ice dynamics
- Education Systems and Policy
- Geography Education and Pedagogy
Victoria University of Wellington
2014-2023
Te Pūnaha Matatini
2023
University of Auckland
2019-2021
Australian National University
2020
Natural Environment Research Council
2007-2012
British Antarctic Survey
2007-2012
University of Canterbury
2011
Antarctica New Zealand
2011
University of Leeds
2007
University of East Anglia
2007
Halogens influence the oxidizing capacity of Earth's troposphere, and iodine oxides form ultrafine aerosols, which may have an impact on climate. We report year-round measurements boundary layer oxide bromine at near-coastal site Halley Station, Antarctica. Surprisingly, both species are present throughout sunlit period exhibit similar seasonal cycles concentrations. The springtime peak (20 parts per trillion) is highest concentration recorded anywhere in atmosphere. These levels halogens...
Abstract. A one-dimensional chemical transport model has been developed to investigate the vertical gradients of bromine and iodine compounds in Antarctic coastal boundary layer (BL). The applied interpret recent year-round observations monoxides (IO BrO) at Halley Station, Antarctica. requires an equivalent I atom flux ~1010 molecule cm−2 s−1 from snowpack order account for measured IO levels, which are up 20 ppt during spring. Using current knowledge gas-phase chemistry, predicts...
Pandemics, earthquakes, fire, war, and other disasters place universities at risk. Disasters can disrupt learning teaching (L&T) for weeks to months or longer. Some institutions have developed business continuity plans protect key organisational services structures, allowing L&T continue. However, little research touches on how academics, learners, communities of practice might respond before, during, after their resilience disruption be fostered reduce impacts L&T. In this research, we...
Measurements of C2–C8 non-methane hydrocarbons (NMHCs) have been made in situ at Halley Base, Antarctica (75◦35°S, 26◦19°W) from February 2004 to 2005 as part the Chemistry Antarctic Boundary Layer and Interface with Snow (CHABLIS) experiment. The data show long- short-term variabilities NMHCs controlled by seasonal geographic dependence emissions variation atmospheric removal rates pathways. Ethane, propane, iso-butane, n-butane acetylene abundances followed a general OH-dependent...
Abstract. In situ measurements of dimethyl sulphide (DMS) and methane sulphonic acid (MSA) were made at Halley Station, Antarctica (75°35' S, 26°19' W) during February 2004–February 2005 as part the CHABLIS (Chemistry Antarctic Boundary Layer Interface with Snow) project. DMS was present in atmosphere all year (average 38.1±43 pptV) a maximum monthly average value 113.6±52 pptV 2004 coinciding temporally minimum sea extent. Whilst seasonal variability interannual can be attributed to number...
Abstract. Nitrate is frequently measured in ice cores, but its interpretation remains immature. Using daily snow surface concentrations of nitrate at Halley (Antarctica) for 2004–2005, we show that sharp spikes (>factor 2) concentration can occur from day to day. Some these will be preserved cores. Many them are associated with increases the sea salt snow. There also a close association between aerosol and aerosol. This evidence consistent many deposited being due conversion or trapping...
Abstract. CHABLIS (Chemistry of the Antarctic Boundary Layer and Interface with Snow) was a collaborative UK research project aimed at probing detailed chemistry boundary layer exchange trace gases snow surface. The centre-piece to measurement campaign, conducted British Survey station, Halley, in coastal Antarctica, from January 2004 through February 2005. campaign measurements covered an extremely wide range species allowing investigations be carried out within broad context chemistry....
Abstract. OH and HO2 radical concentrations have been measured in the boundary layer of coastal Antarctica for a six-week period during austral summer 2005. The measurements were performed at British Antarctic Survey's Halley Research Station (75° 35' S, 26° 19' W), using technique on-resonance laser-induced fluorescence to detect OH, with following chemical conversion through addition NO. mean levels 3.9×105 molecule cm−3 0.76 ppt (ppt denotes parts per trillion, by volume). Typical maximum...
Abstract. Measurements of a suite individual NOy components were carried out at Halley station in coastal Antarctica as part the CHABLIS campaign (Chemistry Antarctic Boundary Layer and Interface with Snow). Conincident measurements cover over half year, from austral winter 2004 through to summer 2005. Results show clear dominance organic compounds (PAN MeONO2) during months, low concentrations inorganic NOy. During summer, are considerably greater, while those compounds, although lower than...
Abstract. A modelling study of radical chemistry in the coastal Antarctic boundary layer, based upon observations performed course CHABLIS (Chemistry Boundary Layer and Interface with Snow) campaign at Halley Research Station Antarctica during austral summer 2004/2005, is described: a detailed zero-dimensional photochemical box model was used, employing inorganic organic reaction schemes drawn from Master Chemical Mechanism, additional halogen (iodine bromine) reactions added. The...
Abstract. NOx measurements were conducted at the Halley Research Station, coastal Antarctica, during austral summer period 1 January–10 February 2005. A clear diurnal cycle was observed with minimum concentrations close to instrumental detection limit (5 pptv) measured between 04:00–05:00 GMT. peaked (24 19:00–20:00 GMT, approximately 5 h after local solar noon. An optimised box model of based on production from in-snow nitrate photolysis and chemical loss derives a mean noon emission rate...
In this paper, we focus on different roles in citizen science projects, and their respective relationships. We propose a tripartite model that recognises not only citizens scientists, but also an important third role, which call the ‘enabler’. doing so, acknowledge additional expertise skillsets are often present frequently overlooked associated literature. interrogate by applying it to three case studies explore how success sustainability of project requires all be acknowledged interacting...
Professional learning communities (PLCs) support students' in pre-tertiary education, but have not been sufficiently explored at the tertiary level. Drawing on literature PLCs across broader educational contexts, we explore development of a PLC within our University using analysis survey responses and through document analyses. Key themes from data collectively reveal core features evolving – Building community; Ground-up design; Creating safe space demonstrate both impacts community...
Abstract The International Polar Year 2007–2008 stimulated a wide range of education, outreach and communication (EOC) related to polar research, catalysed enthusiasm networks that persist ten years on. Using multi-method approach incorporates case studies, auto-ethnographic interviews, survey data, we interrogate the opportunities limitations EOC activities propose new framework for practical, reflexive, engagement design. Our research suggests are under-valued often designed based on...
Abstract. An automated gas chromatograph with sample pre-concentration for the measurement of peroxyacetylnitrate (PAN) was constructed a minimum detection limit below 1 pptv. This instrument deployed at British Antarctic Survey's Halley Research Station, Antarctica (75.6° S, 26.6° W) as part CHABLIS (Chemistry Boundary Layer and Interface Snow) campaign. Hourly measurements were carried out between July 2004 February 2005 observed maximum mixing ratios 52.3 <0.6 pptv, respectively mean...
Abstract. Gas phase formaldehyde concentrations were measured during the 2004–2005 CHABLIS campaign at Halley research station, Antarctica. Data coverage span from May 2004 through to January 2005, thus capturing majority of year, with a wintertime minimum near or below instrumental detection limit rising between 50 and 200 pptv austral summer. Factors controlling HCHO concentration include local chemical sources sinks, exchange snow surface. The seasonality is in line previous observations...
The International Polar Year 2007–2008 (IPY) represented one of the largest international scientific research efforts ever undertaken. In addition to its goals making major advances in polar knowledge, stimulating new and enhanced observational systems infrastructure, inspiring a generation scientists engineers, it also stimulated active engagement thousands teachers, students citizens around world through careful cultivation enthusiastic scientists, educators communicators creative use free...
Abstract. Measurements of individual NOy components were carried out at Halley station in coastal Antarctica. The measurements made as part the CHABLIS campaign (Chemistry Antarctic Boundary Layer and Interface with Snow) cover over half a year, from austral winter 2004 through to summer 2005. They are longest duration most extensive budget study date polar regions. Results show clear dominance organic compounds (PAN MeONO2) during months, low concentrations inorganic NOy, but reversal this...
Abstract. In situ measurements of dimethyl sulphide (DMS) and methane sulphonic acid (MSA) were made at Halley Station, Antarctica (75°35´S, 26°19W) during February 2004–February 2005 as part the CHABLIS (Chemistry Antarctic boundary layer interface with snow) project. DMS was present in atmosphere all year (average 38.1±43 pptV) a maximum monthly average value 113.6±52 pptV 2004 coinciding temporally minimum sea extent. Whilst seasonal variability interannual can be attributed to number...
© 2020 The Authors Pandemics, earthquakes, fire, war, and other disasters place universities at risk. Disasters can disrupt learning teaching (L&T) for weeks to months or longer. Some institutions have developed business continuity plans protect key organisational services structures, allowing L&T continue. However, little research touches on how academics, learners, communities of practice might respond before, during, after their resilience disruption be fostered reduce impacts...