{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:07:52.765360", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2025-Sep-03_to_2025-Sep-05_61.0_52.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2025090001207}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "September 03 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 05 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 88882.4002869481}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Kazakhstan", "Russian Federation"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "Europe"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 52.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 61.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "61.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 58.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 63.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 51.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 54.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[57.47, 53.03], [58.0, 53.25], [58.25, 53.15], [58.32, 53.18], [58.35, 53.25], [58.25, 53.5], [58.47, 54.03], [59.0, 54.25], [59.25, 54.15], [59.32, 54.18], [59.47, 54.53], [60.0, 54.75], [60.53, 54.53], [60.68, 54.18], [61.03, 54.03], [61.18, 53.68], [61.25, 53.65], [61.5, 53.75], [61.75, 53.65], [62.0, 53.75], [62.25, 53.65], [62.5, 53.75], [63.03, 53.53], [63.18, 53.18], [63.53, 53.03], [63.75, 52.5], [63.65, 52.25], [63.75, 52.0], [63.53, 51.47], [63.18, 51.32], [63.03, 50.97], [62.5, 50.75], [62.25, 50.85], [62.0, 50.75], [61.75, 50.85], [61.68, 50.82], [61.53, 50.47], [61.0, 50.25], [60.47, 50.47], [60.32, 50.82], [60.25, 50.85], [60.18, 50.82], [60.03, 50.47], [59.5, 50.25], [59.25, 50.35], [59.0, 50.25], [58.75, 50.35], [58.5, 50.25], [57.97, 50.47], [57.75, 51.0], [57.85, 51.25], [57.75, 51.5], [57.85, 51.75], [57.82, 51.82], [57.47, 51.97], [57.25, 52.5], [57.47, 53.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Europe", "W.Siberia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-09-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[57.47, 51.97], [57.25, 52.5], [57.47, 53.03], [58.0, 53.25], [58.25, 53.15], [58.32, 53.18], [58.35, 53.25], [58.25, 53.5], [58.47, 54.03], [59.0, 54.25], [59.25, 54.15], [59.32, 54.18], [59.47, 54.53], [60.0, 54.75], [60.53, 54.53], [60.68, 54.18], [61.03, 54.03], [61.18, 53.68], [61.25, 53.65], [61.5, 53.75], [61.75, 53.65], [62.0, 53.75], [62.25, 53.65], [62.5, 53.75], [63.03, 53.53], [63.18, 53.18], [63.53, 53.03], [63.75, 52.5], [63.65, 52.25], [63.75, 52.0], [63.53, 51.47], [63.18, 51.32], [63.03, 50.97], [62.5, 50.75], [62.25, 50.85], [62.0, 50.75], [61.75, 50.85], [61.68, 50.82], [61.53, 50.47], [61.0, 50.25], [60.47, 50.47], [60.32, 50.82], [60.25, 50.85], [60.18, 50.82], [60.03, 50.47], [59.5, 50.25], [59.25, 50.35], [59.0, 50.25], [58.75, 50.35], [58.5, 50.25], [57.97, 50.47], [57.75, 51.0], [57.85, 51.25], [57.75, 51.5], [57.85, 51.75], [57.82, 51.82], [57.47, 51.97]]]]}, "2025-09-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[57.47, 51.97], [57.25, 52.5], [57.47, 53.03], [58.0, 53.25], [58.25, 53.15], [58.32, 53.18], [58.35, 53.25], [58.25, 53.5], [58.47, 54.03], [59.0, 54.25], [59.25, 54.15], [59.32, 54.18], [59.47, 54.53], [60.0, 54.75], [60.53, 54.53], [60.68, 54.18], [61.03, 54.03], [61.18, 53.68], [61.25, 53.65], [61.5, 53.75], [61.75, 53.65], [62.0, 53.75], [62.25, 53.65], [62.5, 53.75], [63.03, 53.53], [63.18, 53.18], [63.53, 53.03], [63.75, 52.5], [63.65, 52.25], [63.75, 52.0], [63.53, 51.47], [63.18, 51.32], [63.03, 50.97], [62.5, 50.75], [62.25, 50.85], [62.0, 50.75], [61.75, 50.85], [61.68, 50.82], [61.53, 50.47], [61.0, 50.25], [60.47, 50.47], [60.32, 50.82], [60.25, 50.85], [60.18, 50.82], [60.03, 50.47], [59.5, 50.25], [59.25, 50.35], [59.0, 50.25], [58.75, 50.35], [58.5, 50.25], [57.97, 50.47], [57.75, 51.0], [57.85, 51.25], [57.75, 51.5], [57.85, 51.75], [57.82, 51.82], [57.47, 51.97]]]]}, 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"Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 10.036600326953135}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.408949556818986}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.253095813507798, 22.453888410203035, 22.31596535215982]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.40779266357424, 23.912129974365257, 24.162376658121786]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.852997152645438, 7.183938473765859, 7.189913044045662]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [10.036600326953135, 7.931514240546505, 8.485945260921994]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7909380760466393, 1.6365903716897285, 1.7107094764808135]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.2722220246557874, 1.7957540011299886, 1.998796318291222]}}