{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:47.841901", "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": "2019-May-18_to_2019-May-24_49.5_-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": 2019050002207}, "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 18 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 24 2019"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 52196.372876769005}, "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": ["Madagascar"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Madagascar"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": ["Indian Ocean"]}, "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": 49.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "49.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 47.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 51.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -21.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -18.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-05-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.97, -19.97], [50.5, -19.75], [51.03, -19.97], [51.18, -20.32], [51.53, -20.47], [51.75, -21.0], [51.53, -21.53], [51.0, -21.75], [50.75, -21.65], [50.5, -21.75], [49.97, -21.53], [49.75, -21.0], [49.85, -20.75], [49.75, -20.5], [49.97, -19.97]]]]}, "2019-05-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.97, -19.97], [50.5, -19.75], [51.03, -19.97], [51.18, -20.32], [51.53, -20.47], [51.75, -21.0], [51.53, -21.53], [51.0, -21.75], [50.75, -21.65], [50.5, -21.75], [49.97, -21.53], [49.75, -21.0], [49.85, -20.75], [49.75, -20.5], [49.97, -19.97]]]]}, "2019-05-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.85, -20.25], [48.75, -20.0], [48.97, -19.47], [49.5, -19.25], [50.03, -19.47], [50.18, -19.82], [50.25, -19.85], [50.5, -19.75], [51.03, -19.97], [51.18, -20.32], [51.53, -20.47], [51.75, -21.0], [51.53, -21.53], [51.0, -21.75], [50.75, -21.65], [50.68, -21.68], [50.53, -22.03], [50.0, -22.25], [49.47, -22.03], [49.32, -21.68], [48.97, -21.53], [48.75, -21.0], [48.85, -20.75], [48.75, -20.5], [48.85, -20.25]]]]}, "2019-05-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, -18.47], [47.5, -18.25], [48.03, -18.47], [48.18, -18.82], [48.53, -18.97], [48.68, -19.32], [48.75, -19.35], [49.0, -19.25], [49.25, -19.35], [49.5, -19.25], [50.03, -19.47], [50.18, -19.82], [50.53, -19.97], [50.75, -20.5], [50.65, -20.75], [50.75, -21.0], [50.65, -21.25], [50.75, -21.5], [50.53, -22.03], [50.0, -22.25], [49.47, -22.03], [49.32, -21.68], [48.97, -21.53], [48.8, -21.12], [48.5, -21.25], [48.25, -21.15], [48.0, -21.25], [47.47, -21.03], [47.25, -20.5], [47.38, -20.2], [46.97, -20.03], [46.75, -19.5], [46.85, -19.25], [46.75, -19.0], [46.97, -18.47]]]]}, "2019-05-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, -18.47], [47.5, -18.25], [48.03, -18.47], [48.18, -18.82], [48.3, -18.87], [48.47, -18.47], [49.0, -18.25], [49.53, -18.47], [49.75, -19.0], [49.65, -19.25], [49.68, -19.32], [50.03, -19.47], [50.18, -19.82], [50.53, -19.97], [50.75, -20.5], [50.65, -20.75], [50.75, -21.0], [50.65, -21.25], [50.75, -21.5], [50.53, -22.03], [50.0, -22.25], [49.47, -22.03], [49.32, -21.68], [48.97, -21.53], [48.8, -21.12], [48.5, -21.25], [48.25, -21.15], [48.0, -21.25], [47.47, -21.03], [47.25, -20.5], [47.38, -20.2], [46.97, -20.03], [46.75, -19.5], [46.85, -19.25], [46.75, -19.0], [46.97, -18.47]]]]}, "2019-05-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, -18.47], [47.5, -18.25], [48.03, -18.47], [48.18, -18.82], [48.3, -18.87], [48.47, -18.47], [49.0, -18.25], [49.53, -18.47], [49.75, -19.0], [49.65, -19.25], [49.68, -19.32], [50.03, -19.47], [50.25, -20.0], [50.03, -20.53], [49.5, -20.75], [49.25, -20.65], [49.18, -20.68], [49.03, -21.03], [48.5, -21.25], [48.25, -21.15], [48.0, -21.25], [47.47, -21.03], [47.25, -20.5], [47.38, -20.2], [46.97, -20.03], [46.75, -19.5], [46.85, -19.25], [46.75, -19.0], [46.97, -18.47]]]]}, "2019-05-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.47, -18.47], [49.0, -18.25], [49.53, -18.47], [49.75, -19.0], [49.65, -19.25], [49.75, -19.5], [49.53, -20.03], [49.0, -20.25], [48.47, -20.03], [48.25, -19.5], [48.35, -19.25], [48.25, -19.0], [48.47, -18.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.7800520714126833}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.534490993513564}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.46337215248633, 25.432887266780597, 25.543096304929122, 23.31111966273619, 23.242487367258377, 22.625672906536067, 24.38376899518107]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.521799262623006, 25.468646822151356, 25.81620697870119, 25.655126682004664, 25.569433587137382, 25.719558800683274, 24.559374920647713]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.996792415919856, 1.001086340145946, 1.2117046551024373, 1.713917391040564, 1.456165919023806, 2.092372742336386, 1.2254420934391987]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.0834327791060332, 1.0608203391306006, 1.4080332231875445, 2.7791464416714575, 2.0057808560213175, 2.7800520714126833, 1.466981065563175]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4508763155855153, 1.4284304842128492, 1.67810065928618, 1.6845185609750883, 1.4793781220904436, 1.8992329610431988, 1.4000243371270606]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5646489099632592, 1.5258677324176335, 2.0026839582380433, 2.036369021394208, 1.810319732613887, 2.799974345523631, 1.589004899355425]}}