TRACMASS 7.0 - A Lagrangian trajectory code for atmosphere and ocean sciences

Campino, Aitor Aldama; Döös, Kristofer; Berglund, Sara; Dey, Dipanjan; Kjellsson, Joakim; Jönsson, Bror

doi:10.5194/egusphere-egu21-1690

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The three‐dimensional mass‐conserving Lagrangian particle tracing algorithm TRACMASS v7.0 (Aldama‐Campino et al, 2020; Döös, 1995) is used in the present study to identify the water sources and pathways responsible for East Asian rainfall. TRACMASS has been used to trace water in the ocean (Berglund et al, 2017; Berglund et al, 2021; Berglund et al, 2022; Döös et al, 2008) and air in the atmosphere (Kjellsson & Döös, 2012; Schumacher et al, 2022).…”

Section: Methodsmentioning

confidence: 99%

Identification of the atmospheric water sources and pathways responsible for the East Asian summer monsoon rainfall

Dey,

Geen,

Lambert

et al. 2024

Quart J Royal Meteoro Soc

Self Cite

View full text Add to dashboard Cite

The East Asian Summer Monsoon (EASM) rainfall provides water security and socio‐economic benefit for over 20% of the global population. However, the sources of this rainfall and how it is carried to the East Asian landmass is still uncertain. To address this, atmospheric water sources and pathways associated with the East Asian summer rainfall are identified and quantified in the present study using atmospheric water trajectories, calculated with a novel Lagrangian framework. Evaporated water from the East Asian landmass is found to be the major contributor to East Asian rainfall, amounting to local recycling. The results further indicated that the South Indian Ocean is a major non‐local source for rainfall over southern East Asia during June to August. The role of the South Indian Ocean as a source of atmospheric water is one of the major findings of the study and would help in better understanding and predicting the East Asian summer rainfall. Evaporated waters from the Pacific Ocean (particularly the far‐west Pacific Ocean) dominate the non‐local contribution to precipitation over northern East Asia during June to September, and over southern East Asian rainfall during September. The spatial structure of the East Asian rainfall is reported to be determined by the atmospheric waters that are evaporated and transported from the non‐local sources. The role of the North Indian Ocean and the South Asian landmass as a source of water for East Asian precipitation is minimal and restricted to southern East Asia. The cross‐equatorial Somali jet and equatorial trade winds associated with the western North Pacific Subtropical High are important pathways for East Asian precipitation sourced over the South Indian Ocean and the Pacific Ocean respectively. In contrast, minor roles are attributed to the Bay of Bengal as a source, and mid‐latitude westerlies as a transport pathway, for East Asian precipitation.This article is protected by copyright. All rights reserved.

show abstract

Section: Methodsmentioning

confidence: 99%

Identification of the atmospheric water sources and pathways responsible for the East Asian summer monsoon rainfall

Dey,

Geen,

Lambert

et al. 2024

Quart J Royal Meteoro Soc

Self Cite

View full text Add to dashboard Cite

show abstract

“…The trajectories are calculated using the Lagrangian trajectory code, TRACMASS v7.1 (Aldama‐Campino et al., 2020). TRACMASS analytically calculates the trajectory through each model grid cell by assuming that each component of the three dimensional velocity field varies linearly with its respective direction (Blanke & Raynaud, 1997).…”

Section: Numerical Simulation and Lagrangian Trajectory Analysismentioning

confidence: 99%

Spatial and Temporal Patterns of Southern Ocean Ventilation

Styles,

MacGilchrist,

Bell

et al. 2024

Geophysical Research Letters

View full text Add to dashboard Cite

Ocean ventilation translates atmospheric forcing into the ocean interior. The Southern Ocean is an important ventilation site for heat and carbon and is likely to influence the outcome of anthropogenic climate change. We conduct an extensive backwards‐in‐time trajectory experiment to identify spatial and temporal patterns of ventilation. Temporally, almost all ventilation occurs between August and November. Spatially, “hotspots” of ventilation account for 60% of open‐ocean ventilation on a 30 years timescale; the remaining 40% ventilates in a circumpolar pattern. The densest waters ventilate on the Antarctic shelf, primarily near the Antarctic Peninsula (40%) and the west Ross sea (20%); the remaining 40% is distributed across East Antarctica. Shelf‐ventilated waters experience significant densification outside of the mixed layer.

show abstract

TRACMASS 7.0 - A Lagrangian trajectory code for atmosphere and ocean sciences

Cited by 2 publications

References 0 publications

Identification of the atmospheric water sources and pathways responsible for the East Asian summer monsoon rainfall

Identification of the atmospheric water sources and pathways responsible for the East Asian summer monsoon rainfall

Spatial and Temporal Patterns of Southern Ocean Ventilation

Contact Info

Product

Resources

About