{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:04:52.462496", "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-Apr-22_to_2025-Apr-27_100.0_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": 2025040002359}, "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": "April 22 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 27 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 72674.63725699054}, "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", "Thailand"]}, "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": 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": 100.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "100.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 99.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 102.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[101.18, 17.32], [101.03, 16.97], [100.5, 16.75], [100.25, 16.85], [100.0, 16.75], [99.47, 16.97], [99.25, 17.5], [99.47, 18.03], [99.82, 18.18], [99.96, 18.5], [99.82, 18.82], [99.47, 18.97], [99.32, 19.32], [99.25, 19.35], [99.0, 19.25], [98.47, 19.47], [98.25, 20.0], [98.35, 20.25], [98.25, 20.5], [98.47, 21.03], [99.0, 21.25], [99.25, 21.15], [99.32, 21.18], [99.47, 21.53], [100.0, 21.75], [100.25, 21.65], [100.5, 21.75], [100.74, 21.65], [100.75, 21.65], [100.82, 21.68], [100.97, 22.03], [101.5, 22.25], [102.03, 22.03], [102.2, 21.63], [102.5, 21.75], [103.03, 21.53], [103.25, 21.0], [103.03, 20.47], [102.68, 20.32], [102.53, 19.97], [102.0, 19.75], [101.75, 19.85], [101.5, 19.75], [101.25, 19.85], [101.13, 19.8], [101.25, 19.5], [101.15, 19.25], [101.18, 19.18], [101.25, 19.15], [101.5, 19.25], [102.03, 19.03], [102.25, 18.5], [102.03, 17.97], [101.68, 17.82], [101.53, 17.47], [101.18, 17.32]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia", "S.Asia", "S.E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-04-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[99.25, 20.0], [99.47, 20.53], [100.0, 20.75], [100.53, 20.53], [100.75, 20.0], [100.65, 19.75], [100.75, 19.5], [100.53, 18.97], [100.0, 18.75], [99.47, 18.97], [99.25, 19.5], [99.35, 19.75], [99.25, 20.0]]]]}, "2025-04-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.5, 18.75], [100.75, 18.65], [101.0, 18.75], [101.53, 18.53], [101.75, 18.0], [101.53, 17.47], [101.18, 17.32], [101.03, 16.97], [100.5, 16.75], [100.25, 16.85], [100.0, 16.75], [99.47, 16.97], [99.25, 17.5], [99.47, 18.03], [99.82, 18.18], [99.97, 18.53], [100.5, 18.75]]], [[[98.47, 21.03], [99.0, 21.25], [99.25, 21.15], [99.32, 21.18], [99.47, 21.53], [100.0, 21.75], [100.25, 21.65], [100.5, 21.75], [101.03, 21.53], [101.25, 21.0], [101.15, 20.75], [101.25, 20.5], [101.03, 19.97], [100.68, 19.82], [100.65, 19.75], [100.75, 19.5], [100.53, 18.97], [100.0, 18.75], [99.47, 18.97], [99.32, 19.32], [99.25, 19.35], [99.0, 19.25], [98.47, 19.47], [98.25, 20.0], [98.35, 20.25], [98.25, 20.5], [98.47, 21.03]]]]}, "2025-04-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.25, 20.5], [98.47, 21.03], [99.0, 21.25], [99.25, 21.15], [99.32, 21.18], [99.47, 21.53], [100.0, 21.75], [100.25, 21.65], [100.5, 21.75], [100.75, 21.65], [100.82, 21.68], [100.97, 22.03], [101.5, 22.25], [102.03, 22.03], [102.2, 21.63], [102.5, 21.75], [103.03, 21.53], [103.25, 21.0], [103.03, 20.47], [102.68, 20.32], [102.53, 19.97], [102.0, 19.75], [101.75, 19.85], [101.5, 19.75], [101.25, 19.85], [101.13, 19.8], [101.25, 19.5], [101.15, 19.25], [101.18, 19.18], [101.25, 19.15], [101.5, 19.25], [102.03, 19.03], [102.25, 18.5], [102.03, 17.97], [101.68, 17.82], [101.53, 17.47], [101.18, 17.32], [101.03, 16.97], [100.5, 16.75], [100.25, 16.85], [100.0, 16.75], [99.47, 16.97], [99.25, 17.5], [99.47, 18.03], [99.82, 18.18], [99.96, 18.5], [99.82, 18.82], [99.47, 18.97], [99.32, 19.32], [99.25, 19.35], [99.0, 19.25], [98.47, 19.47], [98.25, 20.0], [98.35, 20.25], [98.25, 20.5]]]]}, "2025-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.25, 20.5], [98.47, 21.03], [99.0, 21.25], [99.25, 21.15], [99.32, 21.18], [99.47, 21.53], [100.0, 21.75], [100.25, 21.65], [100.5, 21.75], [100.75, 21.65], [100.82, 21.68], [100.97, 22.03], [101.5, 22.25], [102.03, 22.03], [102.2, 21.63], [102.5, 21.75], [103.03, 21.53], [103.25, 21.0], [103.03, 20.47], [102.68, 20.32], [102.53, 19.97], [102.0, 19.75], [101.75, 19.85], [101.5, 19.75], [101.25, 19.85], [101.13, 19.8], [101.25, 19.5], [101.15, 19.25], [101.18, 19.18], [101.25, 19.15], [101.5, 19.25], [102.03, 19.03], [102.25, 18.5], [102.03, 17.97], [101.68, 17.82], [101.53, 17.47], [101.18, 17.32], [101.03, 16.97], [100.5, 16.75], [100.25, 16.85], [100.0, 16.75], [99.47, 16.97], [99.25, 17.5], [99.47, 18.03], [99.82, 18.18], [99.96, 18.5], [99.82, 18.82], [99.47, 18.97], [99.32, 19.32], [99.25, 19.35], [99.0, 19.25], [98.47, 19.47], [98.25, 20.0], [98.35, 20.25], [98.25, 20.5]]]]}, "2025-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.25, 20.5], [98.47, 21.03], [99.0, 21.25], [99.25, 21.15], [99.32, 21.18], [99.47, 21.53], [100.0, 21.75], [100.5, 21.54], [100.82, 21.68], [100.97, 22.03], [101.5, 22.25], [102.03, 22.03], [102.2, 21.63], [102.5, 21.75], [103.03, 21.53], [103.25, 21.0], [103.03, 20.47], [102.68, 20.32], [102.53, 19.97], [102.0, 19.75], [101.75, 19.85], [101.5, 19.75], [101.25, 19.85], [101.13, 19.8], [101.25, 19.5], [101.15, 19.25], [101.18, 19.18], [101.25, 19.15], [101.5, 19.25], [102.03, 19.03], [102.25, 18.5], [102.03, 17.97], [101.68, 17.82], [101.53, 17.47], [101.18, 17.32], [101.03, 16.97], [100.5, 16.75], [99.97, 16.97], [99.75, 17.5], [99.85, 17.75], [99.75, 18.0], [99.96, 18.5], [99.82, 18.82], [99.47, 18.97], [99.32, 19.32], [99.25, 19.35], [99.0, 19.25], [98.47, 19.47], [98.25, 20.0], [98.35, 20.25], [98.25, 20.5]]]]}, "2025-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.97, 22.03], [101.5, 22.25], [102.03, 22.03], [102.25, 21.5], [102.03, 20.97], [101.5, 20.75], [100.97, 20.97], [100.75, 21.5], [100.97, 22.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.5272470917947203}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.7252171628912327}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [31.63091176350912, 30.02662629627048, 29.435737660725863, 29.32123524983723, 28.954066047115646, 26.415700531005882]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [32.09294789632162, 34.921599324544275, 34.8454414367676, 35.16333160400393, 32.339578247070335, 26.415700531005882]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.4796658164812584, 2.50274791214166, 2.763625261831005, 2.8323224194797785, 2.750188880003743, 2.11870598440953]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.513712034408627, 2.773553068146157, 3.371230497637953, 3.5272470917947203, 3.233263868817289, 2.11870598440953]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3246630382883633, 1.3022372498387456, 1.3952881896577687, 1.373932211113906, 1.3421410411689285, 1.06780400444682]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.332897905887458, 1.474117387546349, 1.721832406552435, 1.7077743808956896, 1.553717067189154, 1.06780400444682]}}