{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:10:35.357201", "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": "2026-Feb-18_to_2026-Feb-21_98.5_41.5"}, "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": 2026020002157}, "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": "February 18 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 21 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 112994.67342822123}, "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": ["China", "Mongolia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "Asia"]}, "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": 41.5}, "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": 98.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "98.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 94.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 100.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 39.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.25}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[97.47, 39.47], [97.32, 39.82], [97.25, 39.85], [97.0, 39.75], [96.47, 39.97], [96.25, 40.5], [96.35, 40.75], [96.32, 40.82], [95.97, 40.97], [95.82, 41.32], [95.47, 41.47], [95.25, 42.0], [95.35, 42.25], [95.32, 42.32], [95.25, 42.35], [95.0, 42.25], [94.47, 42.47], [94.25, 43.0], [94.47, 43.53], [95.0, 43.75], [95.25, 43.65], [95.5, 43.75], [95.75, 43.65], [96.0, 43.75], [96.25, 43.65], [96.5, 43.75], [96.75, 43.65], [97.0, 43.75], [97.25, 43.65], [97.5, 43.75], [97.75, 43.65], [98.0, 43.75], [98.25, 43.65], [98.5, 43.75], [98.75, 43.65], [99.0, 43.75], [99.53, 43.53], [99.68, 43.18], [100.03, 43.03], [100.25, 42.5], [100.15, 42.25], [100.18, 42.18], [100.53, 42.03], [100.75, 41.5], [100.65, 41.25], [100.75, 41.0], [100.65, 40.75], [100.75, 40.5], [100.53, 39.97], [100.0, 39.75], [99.75, 39.85], [99.68, 39.82], [99.53, 39.47], [99.0, 39.25], [98.5, 39.46], [98.0, 39.25], [97.47, 39.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.C.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.0, 42.25], [94.47, 42.47], [94.25, 43.0], [94.47, 43.53], [95.0, 43.75], [95.25, 43.65], [95.5, 43.75], [95.75, 43.65], [96.0, 43.75], [96.25, 43.65], [96.5, 43.75], [96.75, 43.65], [97.0, 43.75], [97.25, 43.65], [97.5, 43.75], [97.75, 43.65], [98.0, 43.75], [98.25, 43.65], [98.5, 43.75], [98.75, 43.65], [99.0, 43.75], [99.53, 43.53], [99.68, 43.18], [100.03, 43.03], [100.25, 42.5], [100.15, 42.25], [100.18, 42.18], [100.53, 42.03], [100.75, 41.5], [100.65, 41.25], [100.75, 41.0], [100.65, 40.75], [100.75, 40.5], [100.53, 39.97], [100.0, 39.75], [99.75, 39.85], [99.68, 39.82], [99.53, 39.47], [99.0, 39.25], [98.47, 39.47], [98.32, 39.82], [98.25, 39.85], [98.0, 39.75], [97.75, 39.85], [97.5, 39.75], [97.25, 39.85], [97.0, 39.75], [96.47, 39.97], [96.25, 40.5], [96.35, 40.75], [96.32, 40.82], [95.97, 40.97], [95.82, 41.32], [95.47, 41.47], [95.25, 42.0], [95.35, 42.25], [95.32, 42.32], [95.25, 42.35], [95.0, 42.25]]]]}, "2026-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.0, 42.25], [94.47, 42.47], [94.25, 43.0], [94.47, 43.53], [95.0, 43.75], [95.25, 43.65], [95.5, 43.75], [95.75, 43.65], [96.0, 43.75], [96.25, 43.65], [96.5, 43.75], [96.75, 43.65], [97.0, 43.75], [97.25, 43.65], [97.5, 43.75], [97.75, 43.65], [98.0, 43.75], [98.25, 43.65], [98.5, 43.75], [98.75, 43.65], [99.0, 43.75], [99.53, 43.53], [99.68, 43.18], [100.03, 43.03], [100.25, 42.5], [100.15, 42.25], [100.18, 42.18], [100.53, 42.03], [100.75, 41.5], [100.65, 41.25], [100.75, 41.0], [100.65, 40.75], [100.75, 40.5], [100.53, 39.97], [100.0, 39.75], [99.75, 39.85], [99.68, 39.82], [99.53, 39.47], [99.0, 39.25], [98.5, 39.46], [98.0, 39.25], [97.47, 39.47], [97.32, 39.82], [97.25, 39.85], [97.0, 39.75], [96.47, 39.97], [96.25, 40.5], [96.35, 40.75], [96.32, 40.82], [95.97, 40.97], [95.82, 41.32], [95.47, 41.47], [95.25, 42.0], [95.35, 42.25], [95.32, 42.32], [95.25, 42.35], [95.0, 42.25]]]]}, "2026-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.0, 42.25], [94.47, 42.47], [94.25, 43.0], [94.47, 43.53], [95.0, 43.75], [95.25, 43.65], [95.5, 43.75], [95.75, 43.65], [96.0, 43.75], [96.25, 43.65], [96.5, 43.75], [96.75, 43.65], [97.0, 43.75], [97.25, 43.65], [97.5, 43.75], [97.75, 43.65], [98.0, 43.75], [98.25, 43.65], [98.5, 43.75], [98.75, 43.65], [99.0, 43.75], [99.53, 43.53], [99.68, 43.18], [100.03, 43.03], [100.25, 42.5], [100.15, 42.25], [100.18, 42.18], [100.53, 42.03], [100.75, 41.5], [100.65, 41.25], [100.75, 41.0], [100.65, 40.75], [100.75, 40.5], [100.53, 39.97], [100.0, 39.75], [99.75, 39.85], [99.68, 39.82], [99.53, 39.47], [99.0, 39.25], [98.5, 39.46], [98.0, 39.25], [97.47, 39.47], [97.32, 39.82], [97.25, 39.85], [97.0, 39.75], [96.47, 39.97], [96.25, 40.5], [96.35, 40.75], [96.32, 40.82], [95.97, 40.97], [95.82, 41.32], [95.47, 41.47], [95.25, 42.0], [95.35, 42.25], [95.32, 42.32], [95.25, 42.35], [95.0, 42.25]]]]}, "2026-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.47, 40.53], [98.0, 40.75], [98.53, 40.53], [98.75, 40.0], [98.53, 39.47], [98.0, 39.25], [97.47, 39.47], [97.25, 40.0], [97.47, 40.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 13.354265220639604}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 8.77040826164952}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [1.08893822564022, 6.180603826613606, 4.994117446172822, 2.8289517720540402]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.667141215006552, 10.52521413167318, 11.44947458902999, 2.8289517720540402]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.171093816190798, 10.86522598641007, 9.303898778067474, 4.7503978259212545]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.058744774068941, 13.354265220639604, 12.83174842500631, 4.7503978259212545]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4105668805715126, 2.5440709759102953, 2.2696284608572075, 1.2687993827900637]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5913050500643848, 3.128596514720886, 3.0089168732756724, 1.2687993827900637]}}