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This indicator is highly relevant to climate change because greenhouse gases from human activities are the primary driver of observed climate change since the mid-20th century (IPCC, 2021).", "type": "float", "dataChecksum": "15467284345745449406", "metadataChecksum": "7326409859120010045", "datasetName": "Climate Change Impacts - Annual", "updatePeriodDays": 60, "datasetVersion": "2025-05-22", "nonRedistributable": false, "display": {"name": "Annual average", "unit": "parts per billion volume", "shortUnit": "ppbv"}, "schemaVersion": 2, "processingLevel": "major", "presentation": {"titlePublic": "Annual concentration of atmospheric methane", "topicTagsLinks": ["Climate Change"]}, "descriptionKey": ["Based on ice core studies of historical concentration of greenhouse gases, and recent air monitoring sites around the world."], "dimensions": {"years": {"values": [{"id": -797446}, {"id": -796467}, {"id": -795327}, {"id": -794370}, {"id": -792988}, {"id": -792450}, {"id": -791646}, {"id": 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