Adding Tranchant article

src/data/papers-citing-parcels.ts

@@ -2424,4 +2424,14 @@ export const papersCitingParcels: Paper[] = [
     abstract:
       'Lagrangian simulations based on 18 years (2002-2019) of high-resolution thermohaline and three-dimensional velocity fields allow revisiting the fate and thermohaline changes of the upper-ocean Antarctic Circumpolar Current (ACC) waters that enter directly the South Atlantic Ocean basin. An advection-diffusion scheme, applied to both climatological annual-mean and daily mean fields, allows estimating the mean pathways and seasonal variability, as well as recirculation volume transports, times, and depths in the South Atlantic subtropical gyre (SASG). The annual-mean diffusive simulation shows that 96.5 Sv of the upper-ocean waters (up to the 28.00 kg m−3) crossing the Drake Passage remain in the ACC, while 13.0 Sv join the eastern margin of the SASG. About 8.6 Sv of this eastern input, plus an additional 2.7 Sv that enter the SASG through the interior ocean, reach the North Brazil Current, yielding a total Drake contribution of 11.2 Sv to the upper returning-limb of the Atlantic Meridional Overturning Circulation. The upper-ocean waters that reach the eastern SASG undergo substantial water mass transformations, with a net transfer of 6.7 Sv from intermediate-deep to surface layers and an increase in heat transport by 0.39 PW and salt transport by 8.5 × 106 kg s−1, but remain largely unchanged as they drift westward toward the western boundary at 21°S. Most waters within the SASG (86%) recirculate once, taking a median of 9.1 years, although some complete as many as three loops after reaching 32°S-W. Regarding seasonality, the transit times and transport fraction of the upper-ocean waters flowing into the SASG show higher variability than those remaining in the ACC path.',
   },
+  {
+    title:
+      'SWOT Reveals Fine-Scale Balanced Motions Driving Near-Surface Currents and Dispersion in the Antarctic Circumpolar Current',
+    published_info: 'Earth and Space Science, 12, e2025EA004248',
+    authors:
+      'Tranchant, YT, B Legresy, A Foppert, B Pena-Molino, H Phillips (2025)',
+    doi: 'https://doi.org/10.1029/2025EA004248',
+    abstract:
+      'The Antarctic Circumpolar Current (ACC) is a hotspot for the generation of small-scale motions that have a key role in cross-frontal exchanges. We present the first analysis of surface currents in the ACC derived from high-resolution sea surface height (SSH) fields provided by the new Surface Water and Ocean Topography (SWOT) satellite. To mitigate the impact of noise and unbalanced SSH, we introduce a two-dimensional fitting kernel method for deriving geostrophic and cyclogeostrophic velocities at different lengthscales. These velocity estimates are evaluated against the low-pass filtered component (1 day) of trajectories from 21 surface drifters that passed through the ACC meander. The SSH is found to be balanced and appropriate for inferring surface velocities at scales as small as 10 km, with an 18 km length scale identified as a trade-off between suppressing residual unbalanced waves and preserving finer-scale balanced signals in SWOT denoised SSH. At this scale, the geostrophic approximation becomes inaccurate, and higher-order terms in the momentum balance contribute up to 20% of the observed drifter velocities. Finally, distance-averaged pair statistics calculated from drifter pairs and virtual particles reveal that SWOT accurately captures dispersion properties over the 10–200 km range, providing observational evidence of the dominant role of balanced motions in particle dispersion within this range. By capturing balanced dynamics with unprecedented accuracy, SWOT SSH offers new opportunities to understand the impact of small scales on tracer exchange in the ACC and the Southern Ocean more broadly.',
+  },
 ]