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OceanHackWeek: An Inclusive, Collaborative Approach to Developing Oceanography Data Science Skills — By C. Mitchell et al.

Oceanography | Early Online Release

OCEAN EDUCATION

OceanHackWeek

AN INCLUSIVE, COLLABORATIVE APPROACH TO DEVELOPING

OCEANOGRAPHY DATA SCIENCE SKILLS

By Catherine Mitchell, Wu-Jung Lee, Filipe Fernandes, Joseph Gum, Alex Kerney, Emilio Mayorga,

Thomas Moore, Nick Mortimer, Natalia Ribeiro, and Valentina Staneva.

INTRODUCTION

Oceanography relies on a wide range of observational platforms,

sampling strategies, and experimental and modeling approaches

to drive discovery and deepen our understanding of the ocean’s

role in the Earth system (Lee et al., 2017; McMahon et al., 2021).

Over the past few decades, there has been a significant increase in

both the volume and variety of oceanographic data (Tanhua et al.,

2019; Brett et al., 2020). Advancements in computational power

over the last decade have further enhanced the efficacy of models,

fueling a surge in modeling studies (Stewart and Thompson, 2015;

Morrison et al., 2020; Huneke et al., 2022). As a result, compu-

tational methods and resources are becoming essential tools in

oceanography (Reichstein et al., 2019; Robinson et al., 2020), with

numerous examples of advanced computational usage across the

field (Hemming et al., 2020; Kiss et al., 2020; Chapman et al., 2022;

Roughan et al., 2022).

Despite these advancements, ocean science courses have tra-

ditionally focused on domain-specific knowledge, often lacking

comprehensive training in computational skills (Campbell et al.,

2024). Though introductory-level data science training is increas-

ingly being incorporated into oceanography curricula, students

and researchers are left with significant gaps in advanced computa-

tional skills (Greengrove et al., 2020; McGovern and Allen, 2021).

The education and equipment required to develop these computa-

tional skills can be expensive and time consuming (Barber et al.,

2023), with marginalized students often forced to forgo training

opportunities and internships (Kreuser et al., 2023). Scientific pro-

gramming skills, particularly the ability to collaborate effectively

on computational projects, are highly valuable in both academic

and non-lab-work environments (McNutt, 2014).

OceanHackWeek was established in 2018 with three core

goals: (1) to provide a pathway for ocean scientists to acquire

the computational and data science skills necessary for advanc-

ing modern data-intensive oceanographic research; (2) to foster

an open and sharing culture among ocean science research-

ers, spanning a wide range of technical expertise, career stages,

educational backgrounds, and personal experiences; and

(3) to promote open science, reproducible research practices,

and adherence to FAIR (findable, accessible, interoperable,

reusable) data principles. Open, reproducible science encourages

greater inclusivity, enabling broader participation from research-

ers worldwide and creating opportunities to engage in ground-

breaking science, regardless of institutional affiliations or finan-

cial resources (Martin et al., 2025). In this paper, we focus our

main discussion on the OceanHackWeek event, with details on

the organization of OceanHackWeek provided in the online

Supplementary Materials.

THE OCEANHACKWEEK WORKSHOP

The hackweek model (Duncombe, 2018; Huppenkothen et  al.,

2018; Rokem and Benson, 2024) was designed to fill a gap between

traditional summer schools, which are typically instructor-led

ABSTRACT. Over the last two decades, there has been an explosion of oceanographic data from a broad array of ocean observ-

ing platforms, as well as dramatic improvements in the ability of ocean models to resolve processes across multiple temporal and spa-

tial scales. Ocean researchers’ ability to leverage computing tools and resources are key to effectively understanding and monitoring

our ocean, the marine ecosystems it supports, and the response of the Earth system to climate change. Therefore, data science skills

have become essential in the scientific discovery process, and it is becoming increasingly important to have computational skills in our

research toolbox. OceanHackWeek was launched in 2018 to build an inclusive community that promotes data and software proficiency

in oceanography. With a mission to meet, collaborate, and learn at the intersection of ocean and data sciences, OceanHackWeek pro-

vides a vibrant, diverse, and inclusive community that embodies the vision of an open ocean science future. In this article we present the

OceanHackWeek model, provide an overview of the curriculum and formats of the events, and discuss the lessons learned and recom-

mendations for implementing an OceanHackWeek-style event.

Early Online Release | Oceanography

lessons, and hackathons, collaborative events focused on a specific

problem. Hackweeks combine instructor-led tutorials and collabo-

rative project work that enables peer learning (Figure 1).

OceanHackWeek originated as an adaptation of this hackweek

model and is typically run as a five-day workshop that is a bal-

ance between tutorials and project work. The design and scope of

the OceanHackWeek event has evolved since its inception, becom-

ing broader and more inclusive over time with the introduc-

tion of a virtual option and multiple in-person events in differ-

ent locations run concurrently—see Supplementary Table S1 and

details of OceanHackWeek en Español in Martin et al. (2025). The

OceanHackWeek approach emphasizes the value of both scientific

research and software contributions, recognizing that science and

software development are interconnected forces that drive prog-

ress. Diversity is essential in this process, that is, bringing together

individuals with varied backgrounds and insights to enrich the

research, foster innovation, and create stronger solutions. To

ensure broader participation and inclusivity, OceanHackWeek

is run at no, or very minimal cost, to the participants. Thanks

to the generous support of our sponsors (see list provided in the

Acknowledgments section), and the time volunteered by many of

the organizers, instructors, and mentors, we have no registration

fees, provide accommodation free-of-charge, and subsidize travel

and meal costs.

SOFTWARE AND INFRASTRUCTURE

OceanHackWeek uses both the Python and R programming lan-

guages. Initially, the focus was on Python due to its growing prom-

inence in oceanographic research and the broader geosciences

(Irving, 2019; Esmaili, 2021), but R was later included, recogniz-

ing its importance in ecological and biological research (Lai et al.,

2019). We embraced both Python and R because (1) the core com-

puting and data analysis ideas are independent of and transfer-

able between programming languages, (2) many software tools are

language-​specific and flexibility in switching between languages is

advantageous, and (3) working alongside others with expertise in

a different language can be inspiring and facilitates collaboration

across ocean science sub-domains.

OceanHackWeek has relied on customized JupyterHub deploy-

ments hosted on commercial cloud services since its inception,

providing a shared platform accessible to all participants through

a web browser, in the form of JupyterLab and RStudio interfaces.

TIME (EDT)

MONDAY

TUESDAY

WEDNESDAY

THURSDAY

FRIDAY

0830 - 0900

Welcome, Logistics

Tutorial: Git Primer

Project Standup

Project Standup

Project Standup

0900 - 0915

Introduction +

Code of Conduct +

Icebreaker

Project Setup

(finalize project

selection, then create

plans and Git repo for

each project)

Tutorial: AI-Assisted

Programming

Tutorial: R Application

(species distribution

modeling)

Updates /

Check-Out Information

0915 - 0930

Project Work /

Wrap-Up

0930 - 0945

0945 - 1000

Tutorial: Reproducible

Work and Managing

Projects

1000 - 1015

AI Use Case Discussion

1015 - 1030

Break

1030 - 1045

Break

Break

Break

Project Work

1045 - 1100

Introduction to Projects

Tutorial: Data Access

Tutorial: Stresses in the

Geosciences

1100 - 1115

Project Ideation Step 1

(solo and neighbor

discussion)

1115 - 1130

1130 - 1145

Project Ideation Step 2

(full group, stickies,

and flipboards)

1145 - 1200

Project Work

Discussion

1200 - 1300

Lunch

Lunch

Lunch

Lunch

Lunch

1300 - 1400

Tutorial: Conda and

JupyterHub

Tutorial: xarray

Tutorial: Deep Learning

Project Work

Project Wrap-Up

1400 - 1430

Project Slide /

Pitch Workup

Tutorial: Data

Visualization

Project Work

1430 - 1500

Project Presentations

Round 1

1500 - 1530

Project Pitching

Project Work

1530 - 1600

Snacks and Feedback /

Post-Workshop Survey

1600 - 1630

Project Presentations

Round 2

1630 - 1700

Group Activity

FIGURE 1. Example schedule from the 2024 OceanHackWeek workshop. General activities are in gray, tutorials are in orange, discussions are in green, and

project related activities are in blue.

Oceanography | Early Online Release

The platform is provisioned with the software libraries and

resources used in the tutorials and light project work and thus pro-

vides a consistent environment to all participants.

OceanHackWeek uses GitHub for access to the JupyterHub,

sharing of tutorial materials, and collaborative project work. In

addition, we use Slack as a communication platform for all event

types (in-person, virtual, and hybrid). Each project has a dedicated

Slack channel and a GitHub repository, and there are Slack chan-

nels for sharing logistics and coding help. A video conferencing

platform is necessary for virtual and hybrid events, but we disable

the chat feature of these platforms and direct all communication

through Slack, in a tutorial Q&A channel.

CURRICULUM OVERVIEW

Figure 1 shows a typical schedule for a five-day OceanHackWeek

workshop, beginning with tutorials and project team forma-

tion; project time increases as the week progresses. In the early

years, our tutorials focused on accessing data from ocean observ-

ing networks (e.g.,  the Ocean Observatories Initiative and the

US Integrated Ocean Observing System) or specific software

libraries for data manipulation and visualization (such as Python’s

xarray). Since 2023, we have included tutorials that demonstrate

data analysis challenges associated with research questions and

provide participants with a broader overview on how to approach

a computational research project. A list of the past tutorials is pro-

vided in Table S2, with the majority of these available on GitHub

and in recordings on our YouTube channel.

In addition to programming tutorials, we engage participants

in sessions on broad, culturally oriented topics including code

of conduct in collaborative research, reproducible and replicable

research, and open science challenges and ethics, and we host an

open discussion session on mental health in climate science. These

sessions are important for cultivating an inclusive, collaborative,

and open culture.

PROJECTS

Group-based “hack” projects are a crucial component of

OceanHackWeek, with learning and collaboration as the goal,

rather than complete project solutions. Participants are encour-

aged to propose (“pitch”) a project and form a project team with

other participants. Project goals and individual contributions are

negotiated and adjusted throughout the week as challenges arise

and time progresses. The week concludes with presentations from

each project group, where participants are asked to explain what

was accomplished and what lessons were learned, regardless of the

original objectives.

Due to the organic nature of project formation, the proj-

ect groups tend to be diverse in terms of skill levels and domain

knowledge. We encourage this, as we have found it results in

peer-to-peer learning, with tasks distributed within the team to

the appropriate participants. Those with higher coding skill lev-

els often practice their teaching skills by helping others in their

group; likewise, participants with a deeper background in the

project’s science goals or relevant data sources often provide crit-

ical guidance to the group. The group-based setting of the hack

projects aims to foster an open and collaborative scientific pro-

cess, with participants encouraged to continue using these

approaches in their work beyond OceanHackWeek. Box 1 shows

examples of two OceanHackWeek projects that demonstrate

the breadth of the projects. All projects are accessible from the

OceanHackWeek website.

APPLICATIONS AND

PARTICIPANT SELECTION

We have strived to build a diverse cohort with outreach to appli-

cants from underrepresented groups through institutional,

national, and international mailing lists; minority-led societies;

and social media. Applications are open to all, but participants

are expected to have some experience with Python and/or R.

Participants are typically graduate students, but we welcome (and

have had) participants from all academic stages, as well as from

outside of academia. Over the years we have honed our selec-

tion process, settling on a holistic approach to reduce bias and

the impact of disparities among applicants that arise from differ-

ent backgrounds and opportunities (Huppenkothen et al., 2020;

Young et al., 2022). Holistic reviews consider a broad range of cri-

teria but minimize dependence on quantitative metrics (such as

grade point averages for graduate school admissions) and put a

greater emphasis on skills, experiences, and personal attributes

(Megginson, 2009; Wilson et al., 2019). In our participant selec-

tion, we focus on three categories: motivation (why does an appli-

cant want to participate), impact (what impact OceanHackWeek

would have on an applicant’s research interests and beyond), and

ability to work in a team. In 2024, we followed the approach of

Rotjan et al. (2023), with participants classified as either eligible

or ineligible to attend OceanHackWeek, and final participants

selected randomly from the eligible pool. In prior years, partici-

pants were ranked, with places offered to the highest scoring appli-

cants. We have found the holistic approach to reviewing applicants

helps reduce our biases, and coupled with a purposeful outreach,

helps OceanHackWeek achieve a diverse cohort.

EVALUATION OF THE PROGRAM

AND LESSONS LEARNED

OceanHackWeek conducts a post-workshop survey to assess the

success of the workshop and identify areas for improvement. The

individual survey responses are confidential, so we present the

collective lessons we have learned from seven years of surveys as

well as conversations with participants, instructors, mentors, and

organizing committee members. The participant testimonials and

alumni stories provided in the Supplementary Material demon-

strate the value of the program to these participants, particularly

regarding OceanHackWeek’s community-building, positive atmo-

sphere, and the group projects.

Early Online Release | Oceanography

FIGURE B1-2. A screenshot from the video of the turtle detection project presentation identifies turtles

detected in the drone imagery. Click on the video icon to view the full video.

colocate

The colocate module started as an OceanHackWeek project in

2019 and is now a module managed by the US Integrated Ocean

Observing System. The project was created to leverage the efforts

of many groups by serving valuable data via common ERDDAP

interfaces and a community-maintained index of such servers

and enabling a single set of search criteria to be applied across

servers. This module has a user interface that is used to search

ERDDAP servers in order to locate all oceanographic data within a

given region over a set time period (Figure B1-1).

BOX 1. EXAMPLE PROJECTS

Turtle Detection Using

Deep Learning

The 2021 Turtle Detection Using Deep

Learning project used an established

neural network segmentation model to

identify turtles in videos taken by drones.

This project demonstrates the power of a

diverse team, with someone providing the

dataset and scientific knowledge behind

it, some team members supplying exper-

tise in data wrangling, and others offering

experience working with neural networks.

Together, in a short period of time, they

successfully built a model that identified

turtles (Figure B1-2).

41°N —

40°N —

39°N —

38°N —

37°N —

36°N —

78°W

76°W

72°W

74°W

70°W

68°W

FIGURE B1-1. Results from a colocate search. Different colored lines show

where available data have been found. Figure created from code available in

the colocate module.

PARTICIPATION AND ENGAGEMENT ACROSS

EVENT FORMATS

A virtual option for OceanHackWeek enabled the participation

of a more diverse and global community. Table S1 shows partici-

pant demographics for each workshop, with larger percentages of

gender and ethnic/racial minorities, as well as international par-

ticipants, in the years conducted as fully virtual or hybrid events.

Participants appreciated the virtual option, but despite the positive

feedback we received regarding the virtual/hybrid model, in the

last two years there was less interest in participating virtually, sug-

gesting that participants currently prefer in-person interactions

and workshops.

Further, planning and running a hybrid workshop that aims to

provide equitable experiences to all the participants, irrespective

of their mode of participation, is challenging. To host a success-

ful hybrid workshop requires a lot of additional infrastructure and

coordination (Rokem and Benson, 2024). For OceanHackWeek,

this includes our standard infrastructure plus a video conferencing

Oceanography | Early Online Release

platform, consistency in facilitating project work, and any in-​

person logistics. Given the wide range of tasks, we have found that

a large team of organizers is necessary, with some focused on the

in-person component and others dedicated to the virtual com-

ponent. In the case of the “distributed” model with multiple in-​

person locations, we suggest a separate organizing group for each

of the satellites.

Project work in a hybrid setting can be extremely successful but

requires significant facilitation—more than a solely in-person or

virtual event requires. For most of the projects, in-person and vir-

tual participants interacted with each other and collaborated asyn-

chronously around the clock and around the globe. Participants

enjoyed these interactions and working across those traditional

boundaries. This success was based on project-facilitator skills

and the project-specific communication avenues (dedicated Slack

channels) and GitHub repositories available on our shared cloud-

based computational platform. The project facilitators helped

ensure communication was flowing among all team members by

actively checking in with virtual participants to encourage their

continuing involvement. We found that if the project team was

mostly composed of in-person participants in a single location, it

was often harder for the external participants to engage (even with

the facilitation).

FOSTERING AN OPEN, SHARING CULTURE

Scene setting is important for cultivating a welcoming, inclu-

sive environment. Each year, a collaborative Code of Conduct is

developed as one of the workshop’s opening activities, and the

website is updated with the new Code of Conduct. In addition,

we give a presentation that explains our project philosophy and

offers tips for smooth teamwork. We have found these activi-

ties help participants feel welcome, encourage participants to be

inclusive, and build a supportive environment where participants

feel comfortable contributing (see participant testimonials in the

Supplementary Material).

SOFTWARE

OceanHackWeek projects tend to use one main programming lan-

guage, although some participants take this as an opportunity to

work in their less-dominant language, or in a different sub-​domain,

to expand their knowledge and skillsets. We have conducted tuto-

rials in both languages, experimenting with duplication of tutorial

topics (e.g., “Data access in Python” and “Data access in R”), sepa-

rate tutorials that focus on a Python- or R-specific tool (e.g., xarray

or oce, respectively), and more general tutorials that address a

problem and how to approach solving it. As it can be challenging

to keep the attention of participants during the tutorials in their

non-dominant language, we have found more engagement with

the “addressing-a-problem” approach, which tends to be agnostic

regarding the language and more about the process.

Using a shared computational environment brings many advan-

tages for this type of workshop (Rokem and Benson, 2024; Sauthoff

et al., 2024): we do not need to factor time into our schedule to

ensure all the participants have the correct environments installed,

allowing us to focus on our learning goals; it helps project teams

have consistent environments; and it gives participants the oppor-

tunity to (potentially) try out a new coding language without hav-

ing to install it on their local machines (Martin et al., 2025).

RECOMMENDATIONS

Based on our experience, we offer five recommendations for run-

ning an OceanHackWeek style event.

1. Conduct a five-day, immersive workshop. Five days allows time

for tutorials but still gives participants ample time for project

brainstorming, group formation, and project work.

2. To promote inclusive, productive project teams, set the scene

at the start of the session and check in frequently with partici-

pants. For example, discuss tips for effective teamwork and cre-

ate a code of conduct.

3. If the desire is to teach or encourage multiple programming lan-

guages, think carefully about the tutorial approach. Language

agnostic tutorials are good if everyone is listening to the same

tutorial, but if the setting allows, splitting into groups for more

language/tool specific tutorials could be beneficial.

4. Choose computing infrastructure that works for the program/

lesson goals. We recommend a shared computing platform

(e.g., a JupyterHub) to minimize time troubleshooting partic-

ipants’ individual systems. However, depending on the goals

(e.g., if one goal is enabling participants to work locally beyond

the event), walking through installations and environment set-

ups may be appropriate.

5. If the workshop will be hybrid, have materials and clear guide-

lines to help with facilitation of the event across the different

modes of participation. It is important to have a project facilita-

tor for every project, and some organizing committee members

focused on either the in-person component or the virtual com-

ponent rather than having everyone trying to organize both.

A virtual-only workshop can provide the benefit of expanded

accessibility while reducing the burden of coordination between

in-person and virtual modes of participation.

While the discussion in this paper focuses on a five-day work-

shop format, aspects of OceanHackWeek can be translated to a

classroom environment. Indeed, past organizers and participants

have already successfully adapted the model to more specific con-

texts (Martin et al., 2025). Data science and oceanography skills

could still be taught with our tutorial and project-work approach

but spread out over a different time frame; the group projects could

be done in the classroom, or a hackweek could be held within a

research team, a department, or an institution.

With more than 450 participants over seven years, Ocean­

HackWeek has catalyzed intellectual and technical exchanges

among ocean scientists from diverse backgrounds. The balance of

tutorials and participant-driven project work provides attendees

Early Online Release | Oceanography

with new technical skills and collaboration opportunities that

extend beyond the event, accelerating discovery and innovation in

the ocean sciences.

SUPPLEMENTARY MATERIALS

The supplementary materials are available online at https://doi.org/10.5670/

oceanog.2026.e104.

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AUTHOR CONTRIBUTIONS

OceanHackWeek is a collaborative project, with each member of the team contribut-

ing in many different ways. All authors are/were members of the 2023 and/or 2024

OceanHackWeek Steering Committee, and all have been involved in organizing

the annual event for one or more years. For this article specifically, we list roles fol-

lowing the CRediT system: Conceptualization, CM, WL. Writing – original draft and

project administration, CM. Writing – review and editing, CM, WL, FF, JG, AK, EM,

TM, NM, NR, VS.

ACKNOWLEDGMENTS

Over the past seven years, many people have played roles in OceanHackWeek,

from shaping the direction of the program to organizing one (or more) of the annual

events. There are too many to call out individually, but we are extremely grateful

for the contributions of all. We also sincerely appreciate the sponsorship and fund-

ing that has supported the event over the past seven years, enabling participants to

attend at minimal cost: Integrated Ocean Observing System (IOOS), NSF Division of

Ocean Sciences, NASA, Schmidt Ocean Institute, University of Washington eScience

Institute, University of Washington Applied Physics Laboratory, Ocean Carbon and

Biogeochemistry Program, NOAA Global Ocean Monitoring and Observing, Integrated

Marine Observing System (IMOS), Commonwealth Scientific and Industrial Research

Organisation (CSIRO), ACCESS-NRI.

AUTHORS

Catherine Mitchell (cmitchell@bigelow.org), Bigelow Laboratory for Ocean Sciences,

East Boothbay, ME, USA. Wu-Jung Lee, Applied Physics Laboratory, University

of Washington, Seattle, WA, USA. Filipe Fernandes, Integrated Ocean Observing

System (IOOS), USA. Joseph Gum, Computational and Information Systems

Laboratory, NSF National Center for Atmospheric Research, Boulder, CO, USA.

Alex Kerney, Ocean Data Products, Gulf of Maine Research Institute, Portland,

ME, USA. Emilio Mayorga, Applied Physics Laboratory, University of Washington,

Seattle, WA, USA. Thomas Moore, CSIRO Climate Science Centre, Hobart, TAS,

Australia. Nick Mortimer, CSIRO Environment, Crawley, WA, Australia. Natalia Ribeiro,

Integrated Marine Observing System, University of Tasmania, Battery Point,

TAS, Australia. Valentina Staneva, eScience Institute, University of Washington,

Seattle, WA, USA.

ARTICLE CITATION

Mitchell, C., W.-J. Lee, F. Fernandes, J. Gum, A. Kerney, E. Mayorga, T. Moore,

N. Mortimer, N. Ribeiro, and V. Staneva. 2026. OceanHackWeek: An inclusive, collabo-

rative approach to developing oceanography data science skills. Oceanography 39(1),

https://doi.org/10.5670/oceanog.2026.e104.

COPYRIGHT & USAGE

This is an open access article made available under the terms of the Creative

Commons Attribution 4.0 International License, which permits use, sharing, adapta-

tion, distribution, and reproduction in any medium or format as long as users cite the

materials appropriately, provide a link to the Creative Commons license, and indicate

the changes that were made to the original content.