Photo of Me Josué Martínez Moreno
PHYSICAL OCEANOGRAPHER
& HOBBYIST

ABOUT ME

“LIVE AS IF YOU WERE TO DIE TOMORROW. LEARN AS IF YOU WERE TO LIVE FOREVER."

―MAHATMA GANDHI

I am Josué Martínez Moreno a proactive Mexican Earth Scientist interested in oceanic climate and environmental issues, particularly where there is a high impact in population.

Currently, my PhD research focuses on the effects of climate change over oceanic processes (eddies and jets) through perturbations of kinetic energy. This research is relevant due to a possible intensification of coastal heatwaves, changes in the distribution of oceanic primary productivity and potential feedbacks to the earth climate.

Josué Martínez Moreno


Photo of Me

A few years ago few fortuitous events allowed me to teach science as a volunteer in Mexican rural communities and I loved it! This inspired me to teach as a professor assistant, a demonstrator and also pursuit an academic formation in order to transfer my knowledge through teaching.

I spend my free time on random projects, sometimes some of this projects are about coding in order to solve problems in my quotidian life, other times are more artistic like acrylic painting, handmade earrings and photography. I constantly provide myself with new ways to learn different skills which fulfil my passion for learning. Additionally, I enjoy expending time in nature, diving, climbing and other outside activities.

My skills:

PYTHON

95%

LaTeX

95%

BIG DATA

85%

WEB DEVELOP

55%
RESEARCH

Past projects

Most of the 80 percent of untreated global waterwaste ends up in the ocean, transported through river plumes. River plumes are buoyant plumes of water, which provide the driving mecanism for the circulation of the coastal ocean. Most of the untreated water has the potential to change the properties of water as: patogens, organic matter, chemical pollution, salinity, plastic pollution and pharmaceuticals. Comonly, the river plume density is smaller than the oceanic water allowing the propagation of the river plume over large extensions over the coastal ocean. To understand the dispersion and transport of pollutants of the river plumes, I studied the Coatzacoalcos and Grijalva-Usumacinta rivers plumes since they are the rivers more tainted and with more flux of Mexico, respectively. The region where those rivers are located have an important seasonal variability due the wind and coastal currents. Passive pollutants had the capability to disperse from the south Gulf of Mexico to the Missisipi River mouth with a concentration of 0.01% of its original. This value may look insignificant, however in a lot of cases the tolerance limit of certain pollutants is under picograms.
Passive pollutant dispersion on the Gulf of Mexico

Current Project

I'm current developing a new methodology to decompose transient kinetic energy into oceanic processes. The focus of this project is on transient kinetic energy contained in mesoscale eddies. This methodology uses a new eddy tracking algorithm, where the basic premise is that all eddies can be optimal fitted by a Gaussian feature. Afterwards, through a geostrophical approximation, the kinetic energy contained in the eddies can be calculated. Our method is effective in determining how much energy is contained in mesoscale eddy-like features. Synthetic data was used to assess the sensitivity and energy content by this method. Additionally, the algorithm was implemented to analyze trends of transient kinetic energy in the Southern Ocean using the Satellite SSHa (Aviso+) and state-of-the-art $1/10$ degree simulation (ACCESS-OM2). The presented results show an increasing trend of transient kinetic energy inside eddies and also an increase of the eddy amplitude in the Southern Ocean.
Transient Eddy Kinetic energy on the Southern Ocean Hotspot distribution at the Southern Ocean

Future projects

As presented on the current project, most of the energy is located in just eight regions of the SO. Most of the hotspots in the SO are also the areas with the largest positive trend. Some others do not present such increase, which suggests the eddy dynamics or the interaction between processes my differ. Therefore, the next step of interest, will be to understand each region and provide some hypothesis to explain the different regimes of these oceanic regions. Exploratory regional analysis at the Agulhas Current suggest an energy transfer between the eddy processes and the jet processes, which may be one of the reasons why the energy is not increasing consistently in all western boundary currents. The figure shows the TKE, TEKE and TRKE trend at the Agulhas Current region. Note that the magnitude of TEKE is smaller than TRKE at the beginning of the record, however at the end of the time-series TEKE is larger than TRKE. This change in magnitude could be explained by an energy input from the jet-meander field into the eddy field. This hypothesis is consistent with the Agulhas meander flattening, however further research is necessary.
Hotspots TEKE trends
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Citations

1

Publications

HOBBIES

PHOTOGRAPHY

My photograph pasion focus on flowers, landscapes and culture.


Australian native bee at the top of Mount Kosciuszko - NSW, Australia
Water reflection at Lake Cointzio - Michoacán, México)
Monarca Butterfly - Sierra Chincua, México
Piñatas in Patzcuaro - Michoacán, México

ANIMATION

Shortfilm of research at the RV Investigator

OUTDOOR

ANU mountaineering club
Surfing for the first time in Australia
9 Day hike in the Grampians - Victoria, Australia
Surfing at Wollongong, Australia
CONTACT

WHERE I STUDY

I'd be happy to hear from you!

AUSTRALIAN NATIONAL UNIVERSITY
CANBERRA, AUSTRALIA
+61 426 104 364
Email: josue.martinezmoreno@anu.edu.au