---
title: "Instruments at the Arctic edge | Nexus Observatory"
description: "The Arctic has warmed about three to four times faster than the global average, depending on the period and the dataset."
url: https://observatory.global/stories/arctic/
publisher: Nexus Observatory Inc.
updated: 2026-10-31
---

[Stories](https://observatory.global/stories/)Place: Arctic

# Instruments at the edge of the cryosphere

The Arctic has warmed about three to four times faster than the global average, depending on the period and the dataset12. The instruments that showed it are few, far apart and hard to keep running.

**Systems**: Baseline observatories, Polar-orbit satellites, Off-grid stations
**Toward 2030**: Polar coverage from low Earth orbit
**Figures**: 4, data story, map story, simulator, field scene

Go to the references

**01** Data story

## Faster than the globe.

The Arctic Monitoring and Assessment Programme found Arctic surface air temperature rose three times as fast as the global mean between 1971 and 20191. A later study using several datasets found close to four times as fast since 19792. The ratio depends on the period; the direction does not.

Figure as text: Arctic warming relative to the global mean

A bar chart: the global rate as one, the 1971 to 2019 Arctic rate as three times, and the 1979 to 2021 Arctic rate as nearly four times.

| Assessment | Multiple of the global rate |
| --- | --- |
| Global mean | 11 |
| Arctic, 1971–2019 | 31 |
| Arctic, 1979–2021 | 3.82 |

**02** Map story

## Where the long records come from.

A handful of baseline observatories carry the longest Arctic records of greenhouse gases and aerosols, among them Alert in Nunavut and Utqiaġvik in Alaska, listed in the Global Atmosphere Watch station register3. Cambridge Bay hosts Canada’s High Arctic research campus4. Polar-orbiting radar satellites see the sea ice through the polar night5.

Figure as text: Selected Arctic observing sites and a polar orbit

A wireframe globe viewed over the Arctic with four labelled observing sites and a polar orbit with its ground track.

- Alert (82.5° N, 62.5° W): Global Atmosphere Watch station
- Utqiaġvik (71.3° N, 156.6° W): Global Atmosphere Watch station
- Cambridge Bay (69.1° N, 105.1° W): High Arctic research campus
- Ny-Ålesund (78.9° N, 11.9° E): Global Atmosphere Watch station

**03** Simulator

## Seeing the pole from orbit.

A satellite in a near-polar orbit passes over high latitudes on every revolution, so Arctic sites are revisited more often than equatorial ones. Its footprint above a given elevation mask follows from geometry alone6. Lower the orbit and the delay shrinks, but so does the circle it can serve.

Figure as text: Footprint and delay of a low polar orbit

A section through the Earth with a satellite above it and its footprint arc in red.

| Altitude | 600 km |
| --- | --- |
| Elevation mask | 10 ° |
| Footprint radius | 1,760.9 km |
| Slant range at the mask | 1,931.6 km |
| One-way delay, nadir | 2.00 ms |
| Bent-pipe delay, user to gateway | 12.9 ms |
| Orbital period | 97 min |

**04** Field scene

## What it takes to keep one running.

A station on the tundra is a microgrid, a satellite terminal, a weather mast and a geodetic receiver, each specified for −40 °C and months of darkness. The design is mundane and decisive: the record is only as long as the station’s worst winter.

Figure as text: An Arctic station and its links

A wireframe Arctic station with a microgrid, satellite terminal, weather station, GNSS monument and edge node.

- Satellite terminal
- Weather
- Microgrid

Arctic warming as a multiple of global warming

×

0

1.25

2.5

3.75

5

Global mean

1

Arctic, 1971–2019

3

Arctic, 1979–2021

3.8

Figure 1

Data story

Figure 1. Arctic warming relative to the global mean. A bar chart: the global rate as one, the 1971 to 2019 Arctic rate as three times, and the 1979 to 2021 Arctic rate as nearly four times.

## References

1. Arctic Climate Change Update 2021: Key Trends and Impacts. Arctic Monitoring and Assessment Programme, 2021.
2. [The Arctic has warmed nearly four times faster than the globe since 1979](https://doi.org/10.1038/s43247-022-00498-3) . Rantanen, M. et al., Communications Earth & Environment 3:168, 2022.
3. [GAW Station Information System (GAWSIS)](https://gawsis.meteoswiss.ch) . World Meteorological Organization, Global Atmosphere Watch, 2024.
4. [Canadian High Arctic Research Station campus, Cambridge Bay](https://www.canada.ca/en/polar-knowledge.html) . Polar Knowledge Canada, 2024.
5. [RADARSAT Constellation Mission](https://www.asc-csa.gc.ca/eng/satellites/radarsat/) . Canadian Space Agency, 2019.
6. Fundamentals of Astrodynamics and Applications, 4th edition. Vallado, D. A., Microcosm Press, 2013.

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## Where this applies

[Sensors & instruments](https://observatory.global/sensors/)[Space and satellite systems](https://observatory.global/space/)[Earth observation & GeoAI](https://observatory.global/earth-observation/)[Field services](https://observatory.global/field-services/)[Climate](https://observatory.global/industries/climate/)[Research](https://observatory.global/industries/research/)[Communities](https://observatory.global/industries/communities/)[Field tour: arctic station](https://observatory.global/environments/arctic-station/)

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