---
title: "Aggregate greenhouse-gas time series for a named region"
method: GET
path: "/api/v1/environment/co2/region/{region}"
tags: ["Environment"]
---

# Aggregate greenhouse-gas time series for a named region

`GET /api/v1/environment/co2/region/{region}`

Returns every column in the OWID CO2 bundle for a named aggregate entity. Supported regions include continental groupings (Africa, Asia, Europe, North America, Oceania, South America), the European Union (27-member and 28-member compositions), OECD and non-OECD groupings, World Bank income groupings (High-income, Upper-middle-income, Lower-middle-income, Low-income), sectoral aggregates (International aviation, International shipping), and `(GCP)` variants provided by the Global Carbon Project. Call `/catalog` for the full allowlist of valid region names. Published under CC BY 4.0 with dual attribution to Our World in Data and the primary upstream providers.

## Path parameters

- `region` string, required — Region name exactly as returned in `/catalog.regions`. Case-sensitive.

## Response `200`

Aggregate time series across all 79 columns for the requested region.

- EnvelopeCo2RegionPayload
  - `data` Co2RegionPayload, required — Aggregate time series for a named region (OECD, EU27, Asia, etc).
    - `region` string, required — Region label echoed from the path parameter.
    - `observations` Co2Observation[], required — Yearly observations for the aggregate, ordered ascending by year.
      - `year` integer, required — Observation year.
    - `count` integer, required — Number of observations in the response.
    - `attribution` string, required — CC BY 4.0 attribution string.
  - `meta` SugraMeta, required — Metadata attached to every /api/v1/* response envelope.
    - `endpoint` string, required — Requested endpoint path.
    - `data_time` string, required — ISO 8601 UTC timestamp of the source data, not of the request.
    - `response_time` string, required — ISO 8601 UTC timestamp when this response was produced.
    - `provider` string, required — API name and version.
    - `source` string, nullable — Identifier of the primary upstream source used for this response.
    - `attribution` string, nullable — Human-readable attribution mandated by an upstream source (e.g. a securities regulator or self-regulatory organization). Present only on responses whose source requires the owner and source to be clearly identified. Do not remove or alter it when using the response.
    - `fallback_used` boolean, nullable — True when the primary source failed and a fallback produced the data.
    - `fallback_chain` string[], nullable — Ordered list of sources attempted, in the order they were tried.
    - `cached` boolean, nullable — True when this response was served from the internal cache.
    - `stale` boolean, nullable — True when the cached response was returned after the upstream rate-limited or errored. Clients can use this to detect degraded data.

## Other responses

- `401` — Missing or invalid `x-api-key` header.
- `422` — Validation Error
- `429` — Daily rate limit exceeded. Check `X-RateLimit-Reset` for the next window.
- `503` — Upstream source is temporarily unavailable. Retry after a short delay.

---

[API](https://skmtc.net/sugra/apis/sugra-api.md) · [All operations](https://skmtc.net/sugra/apis/sugra-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/sugra/sugra-api/versions/4e2740743eb4/schema)