{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:06:01.338016", "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-Jun-11_to_2025-Jun-15_103.5_22.0"}, "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": 2025060001919}, "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": "June 11 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 15 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 51635.96861185292}, "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", "Lao People's Democratic Republic", "Myanmar", "Viet Nam"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "Asia", "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": 22.0}, "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": 103.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "103.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 100.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 104.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 21.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[99.97, 22.03], [100.5, 22.25], [100.75, 22.15], [100.88, 22.2], [100.75, 22.5], [100.97, 23.03], [101.5, 23.25], [101.75, 23.15], [101.82, 23.18], [101.97, 23.53], [102.5, 23.75], [103.03, 23.53], [103.18, 23.18], [103.53, 23.03], [103.68, 22.68], [104.03, 22.53], [104.18, 22.18], [104.53, 22.03], [104.75, 21.5], [104.53, 20.97], [104.0, 20.75], [103.75, 20.85], [103.68, 20.82], [103.53, 20.47], [103.0, 20.25], [102.75, 20.35], [102.5, 20.25], [101.97, 20.47], [101.8, 20.88], [101.5, 20.75], [101.25, 20.85], [101.0, 20.75], [100.75, 20.85], [100.5, 20.75], [99.97, 20.97], [99.75, 21.5], [99.97, 22.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia", "S.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-06-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.35, 22.25], [102.25, 22.5], [102.47, 23.03], [103.0, 23.25], [103.53, 23.03], [103.68, 22.68], [104.03, 22.53], [104.25, 22.0], [104.03, 21.47], [103.5, 21.25], [103.25, 21.35], [103.18, 21.32], [103.03, 20.97], [102.5, 20.75], [101.97, 20.97], [101.75, 21.5], [101.97, 22.03], [102.32, 22.18], [102.35, 22.25]]]]}, "2025-06-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.97, 21.97], [100.75, 22.5], [100.97, 23.03], [101.5, 23.25], [101.75, 23.15], [101.82, 23.18], [101.97, 23.53], [102.5, 23.75], [103.03, 23.53], [103.18, 23.18], [103.53, 23.03], [103.68, 22.68], [104.03, 22.53], [104.18, 22.18], [104.53, 22.03], [104.75, 21.5], [104.53, 20.97], [104.0, 20.75], [103.75, 20.85], [103.68, 20.82], [103.53, 20.47], [103.0, 20.25], [102.75, 20.35], [102.5, 20.25], [101.97, 20.47], [101.75, 21.0], [101.85, 21.25], [101.82, 21.32], [101.47, 21.47], [101.32, 21.82], [100.97, 21.97]]]]}, "2025-06-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.5, 20.75], [99.97, 20.97], [99.75, 21.5], [99.97, 22.03], [100.5, 22.25], [100.75, 22.15], [100.88, 22.2], [100.75, 22.5], [100.97, 23.03], [101.5, 23.25], [101.75, 23.15], [101.82, 23.18], [101.97, 23.53], [102.5, 23.75], [103.03, 23.53], [103.18, 23.18], [103.53, 23.03], [103.68, 22.68], [104.03, 22.53], [104.18, 22.18], [104.53, 22.03], [104.75, 21.5], [104.53, 20.97], [104.0, 20.75], [103.75, 20.85], [103.68, 20.82], [103.53, 20.47], [103.0, 20.25], [102.75, 20.35], [102.5, 20.25], [101.97, 20.47], [101.8, 20.88], [101.5, 20.75], [101.25, 20.85], [101.0, 20.75], [100.75, 20.85], [100.5, 20.75]]]]}, "2025-06-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.5, 20.75], [99.97, 20.97], [99.75, 21.5], [99.97, 22.03], [100.5, 22.25], [100.75, 22.15], [100.88, 22.2], [100.75, 22.5], [100.97, 23.03], [101.5, 23.25], [101.75, 23.15], [101.82, 23.18], [101.97, 23.53], [102.5, 23.75], [103.03, 23.53], [103.18, 23.18], [103.53, 23.03], [103.68, 22.68], [104.03, 22.53], [104.18, 22.18], [104.53, 22.03], [104.75, 21.5], [104.53, 20.97], [104.0, 20.75], [103.75, 20.85], [103.68, 20.82], [103.53, 20.47], [103.0, 20.25], [102.75, 20.35], [102.5, 20.25], [101.97, 20.47], [101.8, 20.88], [101.5, 20.75], [101.25, 20.85], [101.0, 20.75], [100.75, 20.85], [100.5, 20.75]]]]}, "2025-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.5, 20.75], [99.97, 20.97], [99.75, 21.5], [99.97, 22.03], [100.5, 22.25], [100.75, 22.15], [101.0, 22.25], [101.25, 22.15], [101.5, 22.25], [102.03, 22.03], [102.25, 21.5], [102.03, 20.97], [101.5, 20.75], [101.25, 20.85], [101.0, 20.75], [100.75, 20.85], [100.5, 20.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.4484047824294066}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.2224879928097665}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.05516840616866, 26.183028835720506, 26.91182154902708, 27.063108062744163, 26.883392588297568]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.74376703898116, 27.419997151692712, 28.216391499837243, 28.365232086181663, 27.935801442464196]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.554796871223644, 1.871292273702674, 2.4283797077850853, 2.5557357741671183, 1.633884439130706]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.8081876928151246, 2.4465295140155376, 3.4484047824294066, 3.0384118589533387, 2.0680206811399557]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4424632628344096, 1.5935802858606478, 2.055375242793536, 2.157569984529589, 1.420327184080748]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7254646029928589, 2.202027240118506, 3.019078705571635, 2.751086302914159, 1.7073616330770083]}}