A5071902022- Arctic and Antarctic ice dynamics
- Cryospheric studies and observations
- Polar Research and Ecology
- Arctic and Russian Policy Studies
- Methane Hydrates and Related Phenomena
- Climate change and permafrost
- Marine animal studies overview
- Ocean Acidification Effects and Responses
- Geology and Paleoclimatology Research
- Oceanographic and Atmospheric Processes
- Winter Sports Injuries and Performance
- Atmospheric and Environmental Gas Dynamics
- Climate variability and models
- Indigenous Studies and Ecology
- Marine and coastal ecosystems
- Scientific Research and Discoveries
- Spaceflight effects on biology
- Coastal and Marine Management
- Aerospace Engineering and Energy Systems
- Marine and environmental studies
- Marine and coastal plant biology
- Geophysics and Gravity Measurements
- Avian ecology and behavior
- Marine Biology and Ecology Research
- Adventure Sports and Sensation Seeking
Bureau of Meteorology
2020-2024
University of Tasmania
2015-2024
Institute for Marine and Antarctic Studies
2023
Antarctic Climate and Ecosystems Cooperative Research Centre
2010-2019
Australian Antarctic Division
2010-2013
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
2003-2006
Abstract This study presents the first continuous, high spatiotemporal resolution time series of landfast sea ice extent along East Antarctic coast for period March 2000–December 2008. The was derived from consecutive 20-day cloud-free Moderate Resolution Imaging Spectroradiometer (MODIS) composite images. Fast across shows a statistically significant (1.43% ±0.30% yr−1) increase. Regionally, there is strong increase in Indian Ocean sector (20°–90°E, 4.07% ±0.42% yr−1), and nonsignificant...
The Southern Ocean is disproportionately important in its effect on the Earth system, impacting climatic, biogeochemical and ecological systems, which makes recent observed changes to this system cause for global concern. enhanced understanding improvements predictive skill needed projecting future states of require sustained observations. Over last decade, Observing System (SOOS) has established networks enhancing regional coordination research community groups advance development observing...
Abstract Between 15 and 19 March 2022, East Antarctica experienced an exceptional heat wave with widespread 30°–40°C temperature anomalies across the ice sheet. This record-shattering event saw numerous monthly records being broken including a new all-time record of −9.4°C on 18 at Concordia Station despite typically transition month to Antarctic coreless winter. The driver for these extremes was intense atmospheric river advecting subtropical/midlatitude moisture deep into interior. scope...
Abstract Between 15 and 19 March 2022, East Antarctica experienced an exceptional heat wave with widespread 30°–40°C temperature anomalies across the ice sheet. In Part I, we assessed meteorological drivers that generated intense atmospheric river (AR) caused these record-shattering anomalies. Here, continue our large collaborative study by analyzing diverse impacts driven AR landfall. These included rain surface melt was recorded along coastal areas, but this outweighed high snowfall...
Abstract Climate observations inform about the past and present state of climate system. They underpin science, feed into policies for adaptation mitigation, increase awareness impacts change. The Global Observing System (GCOS), a body World Meteorological Organization (WMO), assesses maturity required observing system gives guidance its development. Essential Variables (ECVs) are central to GCOS, global community must monitor them with highest standards in form Data Records (CDR). Today,...
Abstract With ongoing climate change, research into the biological changes occurring in particularly vulnerable ecosystems, such as Antarctica, is critical. The Totten Glacier region, Sabrina Coast, currently experiencing some of highest rates thinning across all East Antarctica. An assessment microscopic organisms supporting ecosystem marginal sea‐ice zone over continental rise important, yet there a lack knowledge about diversity and distribution these throughout water column, their...
© 2023 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses). Corresponding author: Kyle R. Clem / kyle.clem@vuw.ac.nz
Ice cover data simulated by a coupled sea ice‐ocean model of the North Atlantic and Arctic Ocean are compared with satellite observations for period 1978–2001. The capability in reproducing long‐term mean state interseasonal variability is demonstrated. main modes simulation summer winter half years highly similar. Using NCEP/NCAR reanalysis results from model, we describe relationship atmospheric oceanic variables first two ice concentration summer. mode shows time‐delayed response to...
Abstract Remotely sensed derivation of sea-ice thickness requires sea·ice density. Sea-ice density was estimated with three techniques during the second Sea Ice Physics and Ecosystem eXperimett (SIPEX-II, September-November 2012, East Antarctica). The sea ice first-year highly deformed, mean thicknsss 1.2 m layers, consistent rafting, 6-7/10 columnar 3/10 granular ice. found to be lower than values (900-920 kg −3 used previously derive thickness,, 870 − 3 . At two different stations 800 –3 ,...
Abstract Observations of Southern Hemisphere sea ice from passive microwave satellite measurements show that a new record maximum extent 19.58 x 10 6 km 2 was reached on 30 September 2013; the is just over two standard deviations above 1979-2012 mean and follows similar (19.48x ) in 2012. On day 2013, sea-ice greater than year average (1981-2010) nearly all Ocean regions. For as whole, area were well average, numerous monthly daily records broken. Analysis anomaly patterns atmospheric...
Author(s): Stammerjohn, Sharon; Scambos, Ted A; Adusumilli, Susheel; Barreira, Sandra; Bernhard, Germar H; Bozkurt, Deniz; Bushinsky, Seth M; Clem, Kyle R; Colwell, Steve; Coy, Lawrence; De Laat, Jos; du Plessis, Marcel D; Fogt, Ryan L; Foppert, Annie; Fricker, Helen Amanda; Gardner, Alex S; Gille, Sarah T; Gorte, Tessa; Johnson, Bryan; Keenan, Eric; Kennett, Daemon; Keller, Linda Kramarova, Natalya Lakkala, Kaisa; Lazzara, Matthew Lenaerts, Jan TM; Lieser, Li, Zhi; Liu, Hongxing; Long,...
A new methodology for coincident floe‐scale measurements of the surface elevation, snow depth, and ice draft (the thickness below water line) Antarctic sea has been demonstrated during two recent research voyages: Australian‐led Sea Ice Physics Ecosystem Experiment II (SIPEX II) to East Antarctica in September–November 2012 United Kingdom–led Mass Balance Bellingshausen (ICEBell) voyage Weddell Seas November 2010 (Figure 1a).
Abstract. Our current knowledge of broad-scale patterns primary production in the Southern Ocean is derived from satellite ocean-colour estimates chlorophyll a (Chl a) open ocean, typically spring-summer. Here, we provide evidence that large-scale intra-ice phytoplankton surface aggregation occur off coast Antarctica during austral autumn, and these "blooms" are largely undetected time series (which mask ice-covered ocean). We present an analysis (i) true-colour (visible) imagery combination...
Abstract Antarctic Sea Ice Processes and Climate (ASPeCt) ship-based ice observations, conducted during the Mass Balance in (SIMBA) Physics Ecosystem eXperiment (SIPEX) International Polar Year (IPY) cruises (September–October 2007), are used to validate remote-sensing measurements of extent concentration. Observations include varied sea-ice types at inside edge West (~90 ˚ W) East (~120 E) Antarctica. Time series Advanced Microwave Scanning Radiometer–Earth Observing System (AMSR-E) extents...
The authors wish to thank the CSIRO Marine National Facility (MNF) for its support in form of sea time on RV Investigator, personnel, scientific equipment and data management. All samples acquired voyage are made publicly available accordance with MNF Policy. raw processed by voyages will be archived staff enduring Data Access Portal, https://data.csiro.au. Metadata records at http://www.marlin.csiro.au. Processed products through Trawler http://www.cmar.csiro.au/data/trawler/index.cfm, web...
Abstract Snow thickness on sea ice is a largely undersampled parameter yet of importance for the mass balance and satellite‐based estimates thus our general understanding global volume change. Traditional direct measurements with meter sticks can provide accurate but only spot information, referred to as “needles” due their pinpoint focus while airborne satellite remote sensing snow products, “the haystack,” have large uncertainties scale. We demonstrate remarkable accuracy applicability...