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Relationship Between Size and Intensity in North Atlantic Tropical Cyclones With Steady Radii of Maximum Wind

  •  28 January 2022

Key Points

  • Tropical cyclone (TC) intensity and radius of gale-force wind (R34) are linearly related when the radius of maximum wind (RMW) is stable

  • Linear relationships between TC intensity and R34 are different for different initial RMW

  • TCs intensify more rapidly and R34 expands faster with more very deep convective clouds with a stable RMW

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Post‐Subduction Tectonics of Sabah, Northern Borneo, Inferred From Surface Wave Tomography

  •  28 January 2022

Key Points

  • Shear wave model of Sabah, northern Borneo generated using the two-plane-wave method

  • Crustal thickness and depth to the lithosphere-asthenosphere boundary indicates back-arc spreading behind the Celebes Sea slab

  • In the south-east corner, the lithosphere has been removed below a region of recent volcanism, possibly due a Raleigh-Taylor instability

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Issue Information

  •  27 January 2022
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Seismic Velocity Variations at Different Depths Reveal the Dynamic Evolution Associated With the 2018 Kilauea Eruption

  •  26 January 2022

Key Points

  • The maximum co-eruption velocity decrease of up to 6% may be attributed to a magma intrusion in a dike at 1–2 km depth

  • Magma inflation caused higher compressive stress in the surrounding region (0–1 and 2–8 km depth) before the eruption

  • Magma deflation caused lower compressive stress in the surrounding region (0–1 and 2–8 km depth) after the eruption

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River Organic Carbon Fluxes Modulated by Hydrodynamic Sorting of Particulate Organic Matter

  •  26 January 2022

Key Points

  • In lowland meandering rivers, downstream particle size fining and hydraulic sorting can modulate particulate organic carbon (POC) fluxes

  • Nano-scale secondary ion mass spectrometry and biomarker isotope data show that mineral-associated and discrete POC differ in composition and particle settling velocity

  • Downstream particle size fining enhances fluvial export of recalcitrant, mineral-associated POC that is more resistant to oxidation

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Can IMERG Data Capture the Scaling of Precipitation Extremes With Temperature at Different Time Scales?

  •  26 January 2022

Key Points

  • Integrated Multi-satellite Retrievals for Global Precipitation Measurement (IMERG) represents well the relationship between precipitation extremes and temperature at 6-hourly and daily scales

  • IMERG's scaling factors in dry areas are closer to the observations than in wet regions

  • IMERG overestimates (underestimates) hourly precipitation extremes at low (high) temperatures

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Hall Nature Ahead of Dipolarization Fronts in the Earth's Magnetotail: A Statistical Study for MMS Data

  •  26 January 2022

Key Points

  • A distinct bipolar magnetic structure of By is found in the front–plasma sheet interaction region ahead of the Dipolarization Front

  • The Hall current system consists of the earthward ion component and the quasi-parallel (antiparallel) electron component

  • Ions above 4 keV and electrons around 1 keV are the main carriers of the Hall current system

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Impact of Anthropogenic Emission Changes on the Occurrence of Equatorial Plasma Bubbles

  •  26 January 2022

Key Points

  • Global Coupled Ionosphere-Thermosphere-Electrodynamics Model-Institute of Geology and Geophysics, Chinese Academy of Sciences simulation revealed that the equatorial plasma bubble (EPB) occurrence would increase below 260 km and decrease above 320 km as CO2 emissions increase

  • The EPB occurrence change shows local-time and longitudinal dependence that maximum generally occurred at American sector before midnight

  • CO2 impacts on the electron density, conductivity, and electric fields cause the EPB occurrence change, while dynamic impacts are limited

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Surface and intermediate water changes triggering the future collapse of deep water formation in the North Western Mediterranean

  •  3 February 2022

Key Points

  • The North Western Mediterranean deep water formation collapse by mid-21st century under the RCP8.5 scenario

  • The collapse is mostly driven by changes in the properties of the Modified Atlantic Water and Levantine Intermediate Water

  • The deep water formation collapse is associated to changes in fluxes through the Strait of Gibraltar

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Possible Thermal Effect of Tibetan Plateau on the Atlantic Meridional Overturning Circulation

  •  3 February 2022

Key Points

  • The TP heating (cooling) can cause enhanced moisture transport from the North Atlantic (Pacific) to Pacific (North Atlantic)

  • The TP heating (cooling) can strengthen (weaken) the Atlantic meridional overturning circulation (AMOC)

  • The TP warming at the end of 21th century under the RCP8.5 scenario can lead to a 10% AMOC enhancement

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Thirty years of GOSHIP and WOCE data: Atlantic Overturning of mass, heat and freshwater transport

  •  3 February 2022

Key Points

  • No changes at any latitude between hydrographic sections carried out in the last thirty years

  • The major contributor to the AMOC at the subpolar North Atlantic is the Eastern subbasin for the three decades

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Origins of the intraseasonal variability of East Asian summer precipitation

  •  3 February 2022

Key Points

  • CESM performs well in simulating the leading ISV modes of EASP and their preceding tropical and mid-to-high latitude signals

  • Tropical and mid-to-high latitude forcings together contribute half of the total variance of the two leading ISV modes of EASP

  • External tropical and mid-to-high latitude forcings affect EASP ISV more apparently on a regional, rather than a local, spatial scale

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A Broadband View of the Sea Surface Height Wavenumber Spectrum

  •  3 February 2022

Key Points

  • We present unique broadband airborne lidar observations of sea surface height spanning scales from hundreds of kilometers to a few meters

  • The sea surface height variance due to surface waves can be over an order of magnitude larger than the variance at submesoscales

  • The observed sea surface height is sensitive to the direction of waves which may impact the interpretation of remote sensing measurements

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Assessing two approaches for enhancing the range of simulated scales in the E3SMv1 and the impact on the character of hourly US precipitation

  •  3 February 2022

Key Points

  • Multiscale modeling framework (MMF) and high-resolution (HR) capture more extreme and less frequent precipitation than conventional E3SMv1

  • E3SMv1-HR improves intensity and timing of precipitation in the Eastern and Northwestern US during winter in association with ETCs and ARs

  • E3SMv1-MMF improves intensity of precipitation in the Eastern US and summer diurnal timing in the Central US related to propagating MCSs

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Silicate volcanism on Europa’s seafloor and implications for habitability

  •  3 February 2022

Key Points

  • For volcanism to provide life sustaining reactants to Europas ocean, asthenospheric-formed melt must traverse the cold thick lithosphere

  • Dikes can propagate across the entire lithosphere if either the fracture toughness or the flux into the dike is large

  • Volcanism plausibly provides reactants to Europa's ocean every several thousand years, but seafloor volcanism is far from assured

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An extreme high temperature event in coastal East Antarctica associated with an atmospheric river and record summer downslope winds

  •  3 February 2022

Key Points

  • Sustained horizontal warm advection towards the coast of East Antarctic via an atmospheric river led to marked warming

  • Downslope surface winds of record strength for the summer resulted in descent and adiabatic warming inland of the coast

  • Extremely strong lower tropospheric easterly winds carried the warm air westwards leading to ice melt and record high surface temperatures

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Heat wave trends in Southeast Asia: Comparison of results from observation and reanalysis data

  •  3 February 2022

Key Points

  • Heat waves are becoming more frequent, longer-lasting and more intense in most parts of Southeast Asia and affect more land areas

  • Yearly hottest HW magnitude increases faster and longest HW duration has significant trends in more areas than their average counterparts

  • CHIRTS improves over ERA5 on daily maximum temperature and the associated HW trends, but deteriorates on daily minimum temperature

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Changes in the Kuroshio path, surface velocity and transport during the last 35,000 years

  •  3 February 2022

Key Points

  • Ocean modeling suggests that, due to an enhanced North Equatorial Current, Kuroshio was stronger during last glacial period than at present

  • Southward migration of the Kuroshio Extension during the last glacial period was between 0.5 and 3.5° depending on the longitudes

  • Model results indicate that the vertical thermal gradient in the upper ocean is not a suitable indicator of the Kuroshio intensity

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