{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:05:35.959963", "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-May-30_to_2025-Jun-03_103.5_20.0"}, "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": 2025050002736}, "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": "May 30 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 03 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": 52323.749181836785}, "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": ["Lao People's Democratic Republic", "Thailand", "Viet Nam"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 20.0}, "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": 103.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 105.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[102.75, 20.5], [102.85, 20.75], [102.75, 21.0], [102.97, 21.53], [103.5, 21.75], [104.0, 21.54], [104.5, 21.75], [104.75, 21.65], [105.0, 21.75], [105.53, 21.53], [105.75, 21.0], [105.65, 20.75], [105.75, 20.5], [105.65, 20.25], [105.75, 20.0], [105.53, 19.47], [105.0, 19.25], [104.75, 19.35], [104.68, 19.32], [104.54, 19.0], [104.75, 18.5], [104.53, 17.97], [104.18, 17.82], [104.03, 17.47], [103.5, 17.25], [102.97, 17.47], [102.75, 18.0], [102.85, 18.25], [102.75, 18.5], [102.85, 18.75], [102.82, 18.82], [102.47, 18.97], [102.25, 19.5], [102.47, 20.03], [102.82, 20.18], [102.85, 20.25], [102.75, 20.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia", "S.E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-05-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.75, 20.5], [102.97, 21.03], [103.5, 21.25], [103.75, 21.15], [104.0, 21.25], [104.53, 21.03], [104.75, 20.5], [104.53, 19.97], [104.18, 19.82], [104.03, 19.47], [103.5, 19.25], [102.97, 19.47], [102.75, 20.0], [102.85, 20.25], [102.75, 20.5]]]]}, "2025-05-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.47, 18.97], [102.25, 19.5], [102.47, 20.03], [102.82, 20.18], [102.85, 20.25], [102.75, 20.5], [102.85, 20.75], [102.75, 21.0], [102.97, 21.53], [103.5, 21.75], [104.0, 21.54], [104.5, 21.75], [104.75, 21.65], [105.0, 21.75], [105.53, 21.53], [105.75, 21.0], [105.65, 20.75], [105.75, 20.5], [105.65, 20.25], [105.75, 20.0], [105.53, 19.47], [105.0, 19.25], [104.75, 19.35], [104.68, 19.32], [104.53, 18.97], [104.18, 18.82], [104.03, 18.47], [103.5, 18.25], [102.97, 18.47], [102.82, 18.82], [102.47, 18.97]]]]}, "2025-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.47, 18.97], [102.25, 19.5], [102.47, 20.03], [102.82, 20.18], [102.85, 20.25], [102.75, 20.5], [102.85, 20.75], [102.75, 21.0], [102.97, 21.53], [103.5, 21.75], [104.0, 21.54], [104.5, 21.75], [104.75, 21.65], [105.0, 21.75], [105.53, 21.53], [105.75, 21.0], [105.65, 20.75], [105.75, 20.5], [105.65, 20.25], [105.75, 20.0], [105.53, 19.47], [105.0, 19.25], [104.75, 19.35], [104.68, 19.32], [104.54, 19.0], [104.75, 18.5], [104.53, 17.97], [104.18, 17.82], [104.03, 17.47], [103.5, 17.25], [102.97, 17.47], [102.75, 18.0], [102.85, 18.25], [102.75, 18.5], [102.85, 18.75], [102.82, 18.82], [102.47, 18.97]]]]}, "2025-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.47, 18.97], [102.25, 19.5], [102.47, 20.03], [102.82, 20.18], [102.85, 20.25], [102.75, 20.5], [102.85, 20.75], [102.75, 21.0], [102.97, 21.53], [103.5, 21.75], [104.0, 21.54], [104.5, 21.75], [104.75, 21.65], [105.0, 21.75], [105.53, 21.53], [105.75, 21.0], [105.65, 20.75], [105.75, 20.5], [105.65, 20.25], [105.75, 20.0], [105.53, 19.47], [105.0, 19.25], [104.75, 19.35], [104.68, 19.32], [104.54, 19.0], [104.75, 18.5], [104.53, 17.97], [104.18, 17.82], [104.03, 17.47], [103.5, 17.25], [102.97, 17.47], [102.75, 18.0], [102.85, 18.25], [102.75, 18.5], [102.85, 18.75], [102.82, 18.82], [102.47, 18.97]]]]}, "2025-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.75, 18.5], [102.96, 19.0], [102.75, 19.5], [102.85, 19.75], [102.75, 20.0], [102.97, 20.53], [103.32, 20.68], [103.47, 21.03], [104.0, 21.25], [104.53, 21.03], [104.75, 20.5], [104.65, 20.25], [104.75, 20.0], [104.53, 19.47], [104.18, 19.32], [104.13, 19.2], [104.53, 19.03], [104.75, 18.5], [104.53, 17.97], [104.18, 17.82], [104.03, 17.47], [103.5, 17.25], [102.97, 17.47], [102.75, 18.0], [102.85, 18.25], [102.75, 18.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.025024619496776}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.557800435465219}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.693696594238304, 26.188963233100083, 27.71532649287468, 27.861676929615157, 26.58956208001996]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.221528625488304, 29.76040420532229, 31.917886352539085, 31.564630126953148, 29.85166447957357]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.5451583448376027, 2.0309653056648966, 3.002933450341784, 3.053741153034843, 1.7008184404446882]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.733042881642973, 3.0737716375547848, 5.025024619496776, 4.854336510085091, 1.8385499861299763]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3614362773234454, 1.5748238506953858, 2.320511003227991, 2.389896590272864, 1.5368025851523355]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4682379627486835, 1.9673550555629686, 2.930575258414871, 2.9699121434128886, 1.715078386125375]}}