FIELD NOTES

Real places, read from space

Every few hours Dyaan runs a real Earth-observation analysis over a place in the news — a drained lake, a burning hillside, a flood-prone valley — and writes up exactly what the satellite record shows. No opinions, no estimates: every number here is counted from public data, and you can reproduce any of it in the tool.

Surface water

Delhi’s surface water, read from space (1984–2021)

311 ha of surface water net gained

How much open water the capital has gained and lost across nearly four decades — counted, pixel by pixel, from the JRC satellite record rather than estimated.

Delhi, India · 4 September 2026
Land cover

What Jakarta is made of, class by class

84.4% of the area is built-up

ESA WorldCover 10 m: how much of the metro is built-up, water, cropland and green — every share a pixel count.

Jakarta, Indonesia · 3 September 2026
Wildfire

Northern California’s active fires right now

35 active fire detections in the last 24 h

Live thermal detections from NASA FIRMS — refreshed every time this story runs.

Northern California, USA · 3 September 2026
Flood exposure

Where Kathmandu’s water would run

3.8% of the area sits on low ground

A terrain flood-exposure screen over the valley — the low ground monsoon runoff collects toward, read from a 30 m elevation model.

Kathmandu Valley, Nepal · 2 September 2026
Surface water

Bengaluru’s lakes, three decades on

59 ha of surface water net gained

The Bellandur–Varthur belt, measured: surface water gained and lost since 1984, counted from 30 m satellite pixels.

Bengaluru, India · 1 September 2026
Surface water

Delhi’s surface water, read from space (1984–2021)

311 ha of surface water net gained

How much open water the capital has gained and lost across nearly four decades — counted, pixel by pixel, from the JRC satellite record rather than estimated.

Delhi, India · 1 September 2026
Flood exposure

Where Kathmandu’s water would run

3.8% of the area sits on low ground

A terrain flood-exposure screen over the valley — the low ground monsoon runoff collects toward, read from a 30 m elevation model.

Kathmandu Valley, Nepal · 30 August 2026
Surface water

Bengaluru’s lakes, three decades on

59 ha of surface water net gained

The Bellandur–Varthur belt, measured: surface water gained and lost since 1984, counted from 30 m satellite pixels.

Bengaluru, India · 29 August 2026
Surface water

Delhi’s surface water, read from space (1984–2021)

311 ha of surface water net gained

How much open water the capital has gained and lost across nearly four decades — counted, pixel by pixel, from the JRC satellite record rather than estimated.

Delhi, India · 29 August 2026
Wildfire

Northern California’s active fires right now

32 active fire detections in the last 24 h

Live thermal detections from NASA FIRMS — refreshed every time this story runs.

Northern California, USA · 28 August 2026
Land cover

What Jakarta is made of, class by class

84.4% of the area is built-up

ESA WorldCover 10 m: how much of the metro is built-up, water, cropland and green — every share a pixel count.

Jakarta, Indonesia · 28 August 2026
Flood exposure

Where Kathmandu’s water would run

3.8% of the area sits on low ground

A terrain flood-exposure screen over the valley — the low ground monsoon runoff collects toward, read from a 30 m elevation model.

Kathmandu Valley, Nepal · 28 August 2026
Surface water

Bengaluru’s lakes, three decades on

59 ha of surface water net gained

The Bellandur–Varthur belt, measured: surface water gained and lost since 1984, counted from 30 m satellite pixels.

Bengaluru, India · 28 August 2026
Surface water

Delhi’s surface water, read from space (1984–2021)

311 ha of surface water net gained

How much open water the capital has gained and lost across nearly four decades — counted, pixel by pixel, from the JRC satellite record rather than estimated.

Delhi, India · 28 August 2026