Trans-Himalaya Earth System Science (THESS) is an online-only, open-access journal dedicated to publishing high-quality research on the Trans-Himalaya and its regional and global influences. It spans all areas of Earth system science, with core themes centered on the anthroposphere, atmosphere, biosphere, cryosphere, geosphere and hydrosphere. Research focused on individual Earth system components, as well as interactions among spheres, is welcomed.

THESS focuses on the Trans-Himalaya domain, a region that broadly overlaps with what is often termed High Mountain Asia or the Third Pole. It encompasses the Tibetan Plateau and interconnected mountain regions, including, but not limited to, the Tien Shan, Pamir, Karakoram, Hindu Kush-Himalaya, Hengduan Shan, Qilian Shan, Altai and Caucus, together with the full range of landscapes and environments across the region. The journal also considers the regional and global impacts, feedbacks and teleconnections associated with this domain. Research focused on other alpine locations (such as the Alps, Andes or Rockies) will only be considered if there is direct relevance or comparison to the Trans-Himalaya.

Key thematic areas include:

- Anthroposphere: sustainable development, risk reduction, archaeology and anthropology, land use, etc.

- Atmosphere: atmospheric chemistry and physics, climate impacts, climate dynamics and variability, meteorology, paleoclimate, extreme events, etc.

- Biosphere: biodiversity, conservation, ecosystem services, carbon cycling, soil science, ecology, microbiology, vegetation dynamics, etc.

- Cryosphere: glaciers, permafrost, snow, river and lake ice, glacier collapse, glacial lake outburst floods, avalanches, paleoclimate, etc.

- Geosphere: tectonics, geochemistry, geodynamics, geophysics, hazards, geomorphology, etc.

- Hydrosphere: rivers, lakes, water resources, socio-hydrology, groundwater, hydrogeology, water cycle, etc.

- Cross-sphere processes and interactions.

Research articles must provide a novel, substantive contribution that advances understanding of the Trans-Himalaya Earth system. All conclusions must be supported by robust, clearly presented and reproducible evidence. Submitted manuscripts undergo rigorous and thorough peer review to ensure the highest standards of scientific quality and integrity.

Accordingly, research articles must:

- Focus on the Trans-Himalaya region or its regional and global connections

- Address a clearly defined Earth system science question

- Provide a novel, substantive contribution

- Present conclusions supported by robust and reproducible evidence