A5101898383- Geophysics and Gravity Measurements
- Climate variability and models
- Oceanographic and Atmospheric Processes
- Elbow and Forearm Trauma Treatment
- Trauma and Emergency Care Studies
- Geology and Paleoclimatology Research
- GNSS positioning and interference
- Tropical and Extratropical Cyclones Research
- Orthopedic Surgery and Rehabilitation
- Ocean Waves and Remote Sensing
- Cryospheric studies and observations
- Shoulder Injury and Treatment
- Ionosphere and magnetosphere dynamics
- Climate Change and Health Impacts
- COVID-19 and healthcare impacts
- Arctic and Antarctic ice dynamics
- Healthcare cost, quality, practices
- Patient Safety and Medication Errors
- Underwater Acoustics Research
- demographic modeling and climate adaptation
- Orthopedic Infections and Treatments
- Venous Thromboembolism Diagnosis and Management
- Wave and Wind Energy Systems
- Hospital Admissions and Outcomes
- Climate Change, Adaptation, Migration
University of Calgary
2005-2025
Creative Commons
2019
CSIRO Oceans and Atmosphere
1992-2013
Collaboration for Australian Weather and Climate Research
2008-2013
Edinburgh Royal Infirmary
2011
Antarctic Climate and Ecosystems Cooperative Research Centre
2004-2010
Commonwealth Scientific and Industrial Research Organisation
2004-2010
Bureau of Meteorology
2008-2010
McMaster University
2006
Multi‐century sea‐level records and climate models indicate an acceleration of rise, but no 20th century has previously been detected. A reconstruction global sea level using tide‐gauge data from 1950 to 2000 indicates a larger rate rise after 1993 other periods rapid significant over this period. Here, we extend the mean back 1870 find January December 2004 195 mm, 1.7 ± 0.3 mm yr −1 0.013 0.006 −2 . This is important confirmation change simulations which show not observed. If remained...
We estimate the rise in global average sea level from satellite altimeter data for 1993–2009 and coastal island sea-level measurements 1880 to 2009. For after correcting glacial isostatic adjustment, estimated rate of is 3.2 ± 0.4 mm year−1 2.8 0.8 situ data. The 2009 about 210 mm. linear trend 1900 1.7 0.2 since 1961 1.9 year−1. There considerable variability during twentieth century but there has been a statistically significant acceleration 0.009 0.003 year−2 0.004 year−2, respectively....
TOPEX/Poseidon satellite altimeter data are used to estimate global empirical orthogonal functions that then combined with historical tide gauge monthly distributions of large-scale sea level variability and change over the period 1950–2000. The reconstruction is an attempt narrow current broad range rise estimates, identify any pattern regional rise, determine variation in rate 51-yr period. computed global-averaged from reconstructed time series 1.8 ± 0.3 mm yr−1. With decadal mean level,...
[1] We review the sea-level and energy budgets together from 1961, using recent updated estimates of all terms. From 1972 to 2008, observed rise (1.8 ± 0.2 mm yr−1 tide gauges alone 2.1 a combination altimeter observations) agrees well with sum contributions 0.4 yr−1) in magnitude both having similar increases rate during period. The largest come ocean thermal expansion (0.8 melting glaciers ice caps (0.7 yr−1), Greenland Antarctica contributing about yr−1. cryospheric increase through...
Abstract Confidence in projections of global-mean sea level rise (GMSLR) depends on an ability to account for GMSLR during the twentieth century. There are contributions from ocean thermal expansion, mass loss glaciers and ice sheets, groundwater extraction, reservoir impoundment. Progress has been made toward solving “enigma” twentieth-century GMSLR, which is that observed previously found exceed sum estimated contributions, especially earlier decades. The authors propose following:...
Abstract A time-varying warm bias in the global XBT data archive is demonstrated to be largely due changes fall rate of probes likely associated with small manufacturing at factory. Deep-reaching XBTs have a different history than shallow XBTs. Fall rates were fastest early 1970s, reached minimum between 1975 and 1985, another maximum late 1980s 1990s, been declining since. Field XBT/CTD intercomparisons pseudoprofile technique based on satellite altimetry confirm this time history....
Abstract A modification in the rate of change sea level (i.e. an ‘acceleration’ or ‘nonlinear trend’) is important climate‐related signal, which requires confirmation and explanation. In this study, evidence for accelerations regional global average on timescales several decades longer reviewed by inter‐comparison recent findings different researchers inspection original tide gauge records. Most sea‐level data originate from Europe North America, both sets display a positive acceleration,...
We compare estimates of coastal and global averaged sea level for 1950 to 2000. During the 1990s around 1970, we find is rising faster than average but that it rises slower during late 1970s 1980s. The differences are largely a result sampling time‐varying geographical distribution rise along coastline which more convoluted in some regions others. More rapid corresponds La Niña–like conditions tropical Pacific Ocean rate El Niño–like conditions. Over 51 year period, there no significant...
Updated absolute bias estimates are presented from the Bass Strait calibration site (Australia) for TOPEX/Poseidon (T/P), Jason-1 and Ocean Surface Topography Mission (OSTM/Jason-2) altimeter missions. Results TOPEX side A B data show biases insignificantly different zero when assessed against our error budget (−15 ± 20 mm, −6 18 respectively). shows a considerably higher of +93 15 indicating that observed sea surface is (or range shorter), than truth. For OSTM/Jason-2, further increased to...
The Australian Coastal Experiment (ACE) was conducted in the coastal waters of New South Wales from September 1983 to 1984. data obtained allow a detailed examination dynamics flow on continental shelf and slope particular description trapped wave modes propagating within waveguide. trapped-wave signal is contaminated by energy East Australia current eddies approaching slope. However, do clear separation first three over range frequencies appropriate weather forcing band. Through that...
Abstract Scapholunate interosseous ligament (SLIL) injury is a common ligamentous of the wrist; however, optimal operative management strategy remains unclear. The objective this study was to investigate patient outcomes following Reduction and Association Scaphoid Lunate (RASL) procedure. Twenty-five consecutive patients who had an SLIL tear treated with RASL completed demographic survey three standardized patient-reported outcome tools (Disabilities Shoulder, Arm Hand [DASH], Patient-Rated...
Abstract An absolute calibration of the TOPEX/Poseidon (T/P) and Jason-1 altimeters has been undertaken during dedicated phase mission, in Bass Strait, Australia. The present study incorporates several improvements to earlier methodology used for namely use GPS buoys determination bias a purely geometrical sense, without necessity estimating marine geoid. This article focuses on technical issues surrounding buoy altimeter studies. We estimates computed solely from deployments derive formal...
We quantify the rate of sea level rise around Australian continent from an analysis tide gauge and Global Positioning System (GPS) data sets.To estimate underlying linear rates change in presence significant interannual decadal variability (treated here as noise), we adopt extend a novel network adjustment approach.We simultaneously time-correlated noise well model parameters realistic uncertainties time series at individual gauges, time-series differences computed between pairs gauges.The...
Canadians are at an increased risk of outdoor slip and fall accidents during periods ice snow. The aim this study was to create index alert the public slippery conditions promote pedestrian safety. Emergency department (ED) presentations from four adult hospitals in Calgary, Alberta, Canada, over 11-year period (January 2008‒December 2018) were extracted filtered using ICD-10 code W00 (fall due snow). Multivariable dispersion-corrected Poisson regression models used determine variables most...
[1] In the paper “Revisiting Earth's sea-level and energy budgets from 1961 to 2008” by John A. Church et al. (Geophysical Research Letters, 38, L18601, doi:10.1029/2011GL048794, 2011), 0–700 m thermosteric sea level ocean heat content time series, updated Domingues [2008], did not reflect global estimates because contribution South Indian Ocean was accidentally omitted. This error does lead visible differences in Figure 2a or Table 2 only contributes a minimal difference 3. However, it...
Updated absolute calibration results from Bass Strait, Australia, are presented for the TOPEX/Poseidon (T/P) and Jason-1 altimeter missions. Data an oceanographic mooring array coastal tide gauge have been used in addition to previously described episodic GPS buoy deployments. The represent a significant improvement bias estimates Strait site. extended methodology has allowed comparison between situ data on cycle-by-cycle basis over duration of dedicated phase (formation flight period)...
Through the combination of rare historical sea level observations collected during Sir Douglas Mawson's 1911–1914 Australasian Antarctic Expedition (AAE), together with modern data, space geodetic estimates crustal displacement and modelling coseismic post-seismic earthquake deformation, we present a contemporary analysis to constrain land change over twentieth century at Macquarie Island (54°30′S, 158°57′E). We combine 9 months 1912–1913 data intermediate in 1969–1971, 1982 1998–2007...
As a check on the total system accuracy of TOPEX/POSEIDON satellite, southern hemisphere verification study was undertaken in Bass Strait (41°S) immediately adjacent to Southern Ocean. An acoustic tide gauge and two pressure gauges were installed side near where descending pass 88 crosses Tasmanian coast. The benchmark height estimated relative laser tracking station at Orroral Valley very long baseline interferometry Hobart using Global Positioning System surveying techniques. In...