{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:04:46.133196", "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-13_to_2025-Apr-20_146.5_-3.5"}, "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": 2025040001754}, "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 13 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 20 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 70932.2111484196}, "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": ["Papua New Guinea"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Oceania"]}, "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": ["Bismarck Sea", "New Guinea Basin", "Pacific 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": -3.5}, "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": 146.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "146.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 145.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 148.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -6.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -2.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[146.0, -6.75], [145.47, -6.53], [145.25, -6.0], [145.35, -5.75], [145.25, -5.5], [145.35, -5.25], [145.25, -5.0], [145.38, -4.7], [144.97, -4.53], [144.75, -4.0], [144.97, -3.47], [145.32, -3.32], [145.47, -2.97], [145.82, -2.82], [145.85, -2.75], [145.75, -2.5], [145.97, -1.97], [146.5, -1.75], [146.75, -1.85], [146.82, -1.82], [146.97, -1.47], [147.5, -1.25], [148.03, -1.47], [148.25, -2.0], [148.15, -2.25], [148.18, -2.32], [148.53, -2.47], [148.75, -3.0], [148.65, -3.25], [148.75, -3.5], [148.53, -4.03], [148.0, -4.25], [147.75, -4.15], [147.68, -4.18], [147.54, -4.5], [147.75, -5.0], [147.53, -5.53], [147.0, -5.75], [146.75, -5.65], [146.68, -5.68], [146.65, -5.75], [146.75, -6.0], [146.53, -6.53], [146.0, -6.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.Asia", "Equatorial.Pacific-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-04-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.47, -5.47], [146.0, -5.25], [146.53, -5.47], [146.75, -6.0], [146.53, -6.53], [146.0, -6.75], [145.47, -6.53], [145.25, -6.0], [145.47, -5.47]]]]}, "2025-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.25, -5.5], [145.35, -5.25], [145.25, -5.0], [145.47, -4.47], [146.0, -4.25], [146.53, -4.47], [146.75, -5.0], [146.65, -5.25], [146.75, -5.5], [146.65, -5.75], [146.75, -6.0], [146.53, -6.53], [146.0, -6.75], [145.47, -6.53], [145.25, -6.0], [145.35, -5.75], [145.25, -5.5]]]]}, "2025-04-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.25, -5.5], [145.35, -5.25], [145.25, -5.0], [145.47, -4.47], [146.0, -4.25], [146.53, -4.47], [146.75, -5.0], [146.65, -5.25], [146.75, -5.5], [146.65, -5.75], [146.75, -6.0], [146.53, -6.53], [146.0, -6.75], [145.47, -6.53], [145.25, -6.0], [145.35, -5.75], [145.25, -5.5]]]]}, "2025-04-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.25, -5.0], [145.47, -4.47], [146.0, -4.25], [146.53, -4.47], [146.75, -5.0], [146.65, -5.25], [146.75, -5.5], [146.53, -6.03], [146.0, -6.25], [145.47, -6.03], [145.25, -5.5], [145.35, -5.25], [145.25, -5.0]]]]}, "2025-04-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.5, -4.25], [147.03, -4.47], [147.25, -5.0], [147.03, -5.53], [146.68, -5.68], [146.53, -6.03], [146.0, -6.25], [145.47, -6.03], [145.25, -5.5], [145.47, -4.97], [145.82, -4.82], [145.97, -4.47], [146.5, -4.25]]], [[[146.25, -2.5], [146.47, -1.97], [146.82, -1.82], [146.97, -1.47], [147.5, -1.25], [148.03, -1.47], [148.25, -2.0], [148.15, -2.25], [148.18, -2.32], [148.53, -2.47], [148.75, -3.0], [148.53, -3.53], [148.0, -3.75], [147.75, -3.65], [147.5, -3.75], [146.97, -3.53], [146.82, -3.18], [146.47, -3.03], [146.25, -2.5]]]]}, "2025-04-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.47, -2.97], [145.82, -2.82], [145.85, -2.75], [145.75, -2.5], [145.97, -1.97], [146.5, -1.75], [146.75, -1.85], [146.82, -1.82], [146.97, -1.47], [147.5, 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t2m anomaly recorded over entire duration", "value": 1.7372838086062643}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.089354297798259}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.47799199422201, 24.38320100572372, 24.624502224392415, 25.946392313639365, 27.587712496802965, 27.883675893147768, 28.518560282389274, 28.258097061456454]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.47799199422201, 27.20267257690432, 27.290002441406273, 27.159649149576865, 28.60482559204104, 28.145093536376976, 28.862041727701865, 28.782807922363304]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.1960501839874382, 0.8325983865083231, 1.078696710063544, 0.751517524957535, 0.9990156930603494, 0.8241933790829534, 1.4144656783220597, 1.1366824833018876]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.1960501839874382, 0.9210797933993717, 1.532483798514761, 0.7802310138000621, 1.4683947349051891, 1.0536528365151412, 1.7372838086062643, 1.6823964718254274]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.548780607145399, 1.3316023707914548, 1.6683016591884219, 1.415540058733717, 1.9893438261875966, 1.7471167473397837, 3.0873412182748825, 2.5070014440768125]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.548780607145399, 1.4272689993905565, 1.8509679540761625, 1.4625486301007276, 2.898423994060163, 2.212036361748974, 3.814557215940573, 3.751692696682537]}}