GG7033 Marine Geochemistry

(2023- ) Primary teacher
Master-level, Stockholm University
https://www.su.se/english/search-courses-and-programmes/gg7033-1.643000

GG4208 Sedimentary Systems

(2022- ) Co-teach
Bachelor-level, Stockholm University
https://www.su.se/english/search-courses-and-programmes/gg4208-1.411544

GG7009 Ocean-climate interaction through geologic time​​​​​​​

(2024- ) Co-teach
Master-level, Stockholm University
https://www.su.se/english/search-courses-and-programmes/gg7009-1.673630

GG4090 Oceanography for geoscientists​​​​​​​​​​​​​​

(2024- ) Co-teach
Bachelor-level, Stockholm University
https://www.su.se/english/search-courses-and-programmes/gg4090-1.647699

GG4209 Global Geochemical Cycle

(2021- 2023)
Primary teacher
Bachelor-level, Stockholm University
https://www.su.se/english/search-courses-and-programmes/gg4209-1.411545

1) Silicate alteration in marine sediments: Chemical weathering and reverse weathering involving silicate minerals in terrestrial environments are likely the most important processes controlling the long-term CO2 concentration in the atmosphere and thereby, green house forcing. It is much less understood whether similar processes occur in marine environments and what is the scale of such processes.
2022-2023 Swedish Foundations' starting grant fellow-Ragnar Söderbergs stiftelse (info) primary PI
2023-2028 ERC Consolidator grant (info,info) Primary PI
Suggested reading: 
Hong, W-L., Torres, M. E., and Kutterolf, S. "Towards a global quantification of volcanogenic aluminosilicate alteration rates through the mass balance of strontium in marine sediments." Chemical Geology 550 (2020): 119743.  
Torres, M. E., Hong, W.-L., Solomon, E. A. et al. "Silicate weathering in anoxic marine sediment as a requirement for authigenic carbonate burial." Earth-Science Reviews 200 (2020): 102960.

2) Glacial-driven Submarine Groundwater Discharge (SGD): Submarine groundwater discharge (SGD) has been known for decades as an important process that, in addition to rivers, transports solutes from land to ocean. Ice sheet dynamics have been put forward to explain the SGD observed from places with past ice sheet coverage such as the Laurentide Ice Sheet in North America  as well as the present day Greenland and Antarctica ice sheets. This cluster of project aims to address the impact of cyrosphere dynamics to submarine groundwater systems from the Norwegian Sea, Svalbard, Greenland, northern Baltic Sea and other locations in the high northern latitudes.
2020-2024 GRIEG- EEA Grant and Norway Grant (info) co-PI
2022-2025 Swedish Research Council (VR) primary PI
2024-2027 EU-water4all-Swedish Research Council (FORMAS) co-PI
2025-2030 Knut and Alice Wallenberg Foundation (info) co-PI
Suggested reading:
Kim, Ji-Hoon, Jong-Sik Ryu, Wei-Li Hong, Kwangchul Jang, Young Ji Joo, Damien Lemarchand, Jin Hur et al. "Assessing the impact of freshwater discharge on the fluid chemistry in the Svalbard fjords." Science of the Total Environment 835 (2022): 155516.

Hong, W.‐L., Lepland, A., Himmler, T. et al. "Discharge of meteoric water in the eastern Norwegian Sea since the last glacial period." Geophysical Research Letters 46, no. 14 (2019): 8194-8204.

3) Methane dynamics in Arctic Ocean seeps: Emission of methane, a potent greenhouse gas, from cold seeps to overlying ocean has been a topic of interest in the Arctic region. I study the geochemical singals in pore fluids, seidments, and authigenic minerals to understand the mechanism, time scale, and consequence of methane emission. 
Suggested reading:
Hong, W.-L., Torres, M. E., Carroll, J. et al. "Seepage from an arctic shallow marine gas hydrate reservoir is insensitive to momentary ocean warming." Nature communications 8, no. 1 (2017): 1-14. 

4) Fluid flow and gas hydrate dynamics: Fluid flow and gas hydrate deposits commonly appear along continental margins. What can we learn from the pore fluid geochemistry? 
Suggested reading:
Hong, W‐L., Torres, M. E. , Portnov, A. et al. "Variations in gas and water pulses at an Arctic seep: fluid sources and methane transport." Geophysical Research Letters 45, no. 9 (2018): 4153-4162.
Peszynska, M., Hong, W.-L., Torres, M. E. and Kim, J.-H. "Methane hydrate formation in Ulleung Basin under conditions of variable salinity: Reduced model and experiments." Transport in Porous Media 114, no. 1 (2016): 1-27.