An Introduction to Atmospheric Gravity Wave Science in the Polar Regions and First Results From ANGWIN

Moffat‐Griffin, Tracy

doi:10.1029/2019jd030247

Cited by 8 publications

(6 citation statements)

References 13 publications

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“…GW activities in the Antarctic MLT regions can vary depending on the observation position due to different wave sources and different background atmosphere. Therefore, a comparison study of GW activities over Antarctica is needed to improve our understanding of wave dynamics and vertical couplings between the lower and upper atmosphere, which will be studied in the future using meteor radar data from various Antarctic stations belonging to the Antarctic Gravity Wave Instrument Network (ANGWIN) (Moffat‐Griffin, 2019).…”

Section: Summary and Discussionmentioning

confidence: 99%

Activities of Small‐Scale Gravity Waves in the Upper Mesosphere Observed From Meteor Radar at King Sejong Station, Antarctica (62.22°S, 58.78°W) and Their Potential Sources

Song

Chun

et al. 2021

JGR Atmospheres

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Atmospheric gravity waves (GWs) can be generated from various tropospheric sources such as orography, jet stream, and convection, and these waves play a major role in determining the spatiotemporal structure of the middle atmosphere wind and temperature by transferring momentum and energy to high altitudes (Lindzen, 1981). In the mesosphere, GW breaking is frequently observed (Nappo, 2013), and momentum and energy transfer accompanied by GW breaking is essential in accounting for the thermal and wind structure of the mesosphere (

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Section: Summary and Discussionmentioning

confidence: 99%

Activities of Small‐Scale Gravity Waves in the Upper Mesosphere Observed From Meteor Radar at King Sejong Station, Antarctica (62.22°S, 58.78°W) and Their Potential Sources

Song

Chun

et al. 2021

JGR Atmospheres

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“…Since the Scan, instrumentation for geospace research has increased, and progress has been made in understanding the sources of atmospheric gravity waves in and around Antarctica, 153 the effects of energetic particle precipitation, 154 and magnetic and neutral atmospheric ''interhemispheric conjugacy.'' For example, atmospheric gravity wave observations from the McMurdo lidar 155 and the Antarctic Gravity Wave Instrument Network all-sky imager 153 have characterized polar vortex waves. The NASA Balloon Array for Radiation-belt Relativistic Electron Losses mission has observed localized and temporally constrained energetic particle precipitation associated with radio wave activity.…”

Section: Near-earth Space and Beyond: Eyes On The Skymentioning

confidence: 99%

Sustained Antarctic Research: A 21st Century Imperative

et al. 2019

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The view from the south is, more than ever, dominated by ominous signs of change. Antarctica and the Southern Ocean are intrinsic to the Earth system, and their evolution is intertwined with and influences the course of the Anthropocene. In turn, changes in the Antarctic affect and presage humanity's future. Growing understanding is countering popular beliefs that Antarctica is pristine, stable, isolated, and reliably frozen. An aspirational roadmap for Antarctic science has facilitated research since 2014. A renewed commitment to gathering further knowledge will quicken the pace of understanding of Earth systems and beyond. Progress is already evident, such as addressing uncertainties in the causes and pace of ice loss and global sea-level rise. However, much remains to be learned. As an iconic global ''commons,'' the rapidity of Antarctic change will provoke further political action. Antarctic research is more vital than ever to a sustainable future for this One Earth.

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“…These OGWs were responsible for temperature fluctuations that affect the formation of cirrus clouds. While, OGWs in East Antarctica have been the subject of investigations in the last two decades (Alexander & Murphy, 2015; Moffat‐Griffin, 2019; Orr et al., 2014; Watanabe et al., 2006), their impact on precipitation remains to be determined.…”

Section: Introductionmentioning

confidence: 99%

Orographic Flow Influence on Precipitation During an Atmospheric River Event at Davis, Antarctica

et al. 2022

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Snowfall in Antarctica is the main input to ice sheet mass balance (King & Turner, 1997), which determines the contribution of the southernmost continent to sea level rise (Shepherd & Wingham, 2007). On the East Antarctic coast, most of the precipitation comes either from meridional moisture advection by extratropical cyclones or is induced by orographic forcing (King & Turner, 1997). The surface mass balance of the East Antarctic coastal ice sheets is hence heavily influenced by the frequency and intensity of maritime moisture intrusions from lower latitudes, which often result in high precipitation accumulations (Noone et al., 1999;Nuncio & Satheesan, 2014;Welker et al., 2014). A recent study by Turner et al. (2019) showed that extreme precipitation events (EPEs, defined as the largest 10% of daily totals) contribute to more than 40% of the annual precipitation over much of the continent. In particular, the greatest contribution from EPEs is found on the main ice shelves, especially on the Amery Ice Shelf (less than 10 days of the highest-ranked precipitation contributing to 50% of the annual total). Davis station ( 𝐴𝐴 69 • S, 𝐴𝐴 78 • E) is located on the coast of the Vestfold Hills, just north-east of the Amery Ice Shelf (Figure 1). The Vestfold Hills are one of the few ice-free regions in Antarctica, which makes it part of the Antarctic oases (Pickard, 1986). This is due mostly to its precipitation climatology with only 70.9 mm mean annual precipitation and 7.5 mm in December-January-February (DJF, statistics computed over the period 1960-2021, http://www.bom.gov.au/climate/averages/tables/cw_300000_All.shtml). Davis station, with its 1.8 𝐴𝐴 • C mean daily

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An Introduction to Atmospheric Gravity Wave Science in the Polar Regions and First Results From ANGWIN

Cited by 8 publications

References 13 publications

Activities of Small‐Scale Gravity Waves in the Upper Mesosphere Observed From Meteor Radar at King Sejong Station, Antarctica (62.22°S, 58.78°W) and Their Potential Sources

Activities of Small‐Scale Gravity Waves in the Upper Mesosphere Observed From Meteor Radar at King Sejong Station, Antarctica (62.22°S, 58.78°W) and Their Potential Sources

Sustained Antarctic Research: A 21st Century Imperative

Orographic Flow Influence on Precipitation During an Atmospheric River Event at Davis, Antarctica

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