Mara Vance

Work/Ground Truth

06

Ground Truth

Data tooling for a climate research lab.

Ground Truth
Client
Stanford Earth Lab
Role
Lead Designer
Discipline
Product · Research
Timeline
7 months
Year
2022

Tools

Figma · Observable · D3

[ 01 ] The brief

An internal tool for climate scientists to compare satellite measurements against on-the-ground sensor readings. Built with the team that uses it every day.

Researchers were stitching together QGIS, Excel and a homegrown Python notebook to validate satellite estimates. A single comparison took four hours and an unhealthy amount of caffeine.

[ 02 ] Approach

  1. 01

    Embedded with the lab for three weeks. Watched the four-hour workflow happen in front of me, and asked dumb questions until the bottlenecks were obvious.

  2. 02

    Designed a side-by-side viewer with synchronized zoom, a shared timeline, and a difference layer. The four hours collapsed to 20 minutes.

  3. 03

    Worked directly in Observable so the prototypes ran on real data from day one.

[ 03 ] Selected screens

Comparison viewer

FIG. 01

Comparison viewer

Timeline scrubber
Data layer
FIG. 02Timeline scrubber
FIG. 03Data layer

[ 04 ] Decisions

  • No charts for chart's sake

    Every visualisation answers a specific scientist question. If a table did the job better, we used a table.

  • Reproducibility in the URL

    Every view is a permalink. Researchers paste comparisons into Slack and Github issues; the link is the citation.

[ 05 ] Outcomes

  • 01

    The validation workflow time dropped from 4 hours to 20 minutes.

  • 02

    Tool was adopted by two partner labs at MIT and ETH Zurich within a year.

[ 06 ] Adjacent work

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