{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:02:44.292582", "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": "2024-Dec-23_to_2024-Dec-31_99.5_28.5"}, "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": 2024120002041}, "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": "December 23 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 31 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 9}, "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": 72845.6759258994}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 28.5}, "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": 99.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "99.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 98.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 101.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 30.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[99.94, 27.93], [99.89, 27.91], [99.68, 27.82], [99.53, 27.47], [99.0, 27.25], [98.75, 27.35], [98.5, 27.25], [97.97, 27.47], [97.75, 28.0], [97.85, 28.25], [97.75, 28.5], [97.85, 28.75], [97.82, 28.82], [97.47, 28.97], [97.25, 29.5], [97.47, 30.03], [97.82, 30.18], [97.97, 30.53], [98.5, 30.75], [98.75, 30.65], [99.0, 30.75], [99.25, 30.65], [99.5, 30.75], [99.75, 30.65], [100.0, 30.75], [100.3, 30.63], [100.47, 31.03], [101.0, 31.25], [101.53, 31.03], [101.68, 30.68], [102.03, 30.53], [102.25, 30.0], [102.04, 29.5], [102.25, 29.0], [102.15, 28.75], [102.25, 28.5], [102.03, 27.97], [101.5, 27.75], [101.25, 27.85], [101.0, 27.75], [100.75, 27.85], [100.5, 27.75], [100.0, 27.96], [99.96, 27.94], [99.94, 27.93]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Tibetan-Plateau", "E.Asia", "S.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-12-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.97, 29.03], [99.5, 29.25], [100.03, 29.03], [100.25, 28.5], [100.03, 27.97], [99.5, 27.75], [98.97, 27.97], [98.75, 28.5], [98.97, 29.03]]]]}, "2024-12-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.75, 29.0], [98.97, 29.53], [99.5, 29.75], [100.03, 29.53], [100.25, 29.0], [100.15, 28.75], [100.25, 28.5], [100.03, 27.97], [99.5, 27.75], [98.97, 27.97], [98.75, 28.5], [98.85, 28.75], [98.75, 29.0]]]]}, "2024-12-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.97, 29.03], [98.5, 29.25], [98.75, 29.15], [98.82, 29.18], [98.97, 29.53], [99.5, 29.75], [100.03, 29.53], [100.25, 29.0], [100.15, 28.75], [100.25, 28.5], [100.03, 27.97], [99.68, 27.82], [99.53, 27.47], [99.0, 27.25], [98.75, 27.35], [98.5, 27.25], [97.97, 27.47], [97.75, 28.0], [97.85, 28.25], [97.75, 28.5], [97.97, 29.03]]], [[[101.0, 29.25], [100.47, 29.47], [100.25, 30.0], [100.47, 30.53], [101.0, 30.75], [101.53, 30.53], [101.75, 30.0], [101.53, 29.47], [101.0, 29.25]]]]}, "2024-12-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.75, 28.5], [97.97, 29.03], [98.32, 29.18], [98.47, 29.53], [99.0, 29.75], [99.25, 29.65], [99.5, 29.75], [100.03, 29.53], [100.2, 29.13], [100.32, 29.18], [100.46, 29.5], [100.25, 30.0], [100.47, 30.53], [101.0, 30.75], [101.53, 30.53], [101.75, 30.0], [101.54, 29.5], [101.75, 29.0], [101.53, 28.47], [101.18, 28.32], [101.03, 27.97], [100.5, 27.75], [100.0, 27.96], [99.68, 27.82], [99.53, 27.47], [99.0, 27.25], [98.75, 27.35], [98.5, 27.25], [97.97, 27.47], [97.75, 28.0], [97.85, 28.25], [97.75, 28.5]]]]}, "2024-12-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.97, 30.53], [98.5, 30.75], [98.75, 30.65], [99.0, 30.75], [99.25, 30.65], [99.5, 30.75], [100.03, 30.53], [100.18, 30.18], [100.3, 30.13], [100.47, 30.53], [101.0, 30.75], [101.53, 30.53], [101.75, 30.0], [101.54, 29.5], [101.75, 29.0], [101.53, 28.47], [101.18, 28.32], [101.03, 27.97], [100.5, 27.75], [100.0, 27.96], [99.68, 27.82], [99.53, 27.47], [99.0, 27.25], [98.75, 27.35], [98.5, 27.25], [97.97, 27.47], [97.75, 28.0], [97.85, 28.25], [97.75, 28.5], [97.88, 28.8], [97.47, 28.97], [97.25, 29.5], [97.47, 30.03], [97.82, 30.18], [97.97, 30.53]]]]}, "2024-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.47, 28.97], [97.25, 29.5], [97.47, 30.03], [97.82, 30.18], [97.97, 30.53], [98.5, 30.75], [98.75, 30.65], [99.0, 30.75], [99.25, 30.65], [99.5, 30.75], [99.75, 30.65], [100.0, 30.75], [100.3, 30.63], [100.47, 31.03], [101.0, 31.25], [101.53, 31.03], [101.68, 30.68], [102.03, 30.53], [102.25, 30.0], [102.04, 29.5], [102.25, 29.0], [102.15, 28.75], [102.25, 28.5], [102.03, 27.97], [101.5, 27.75], [101.25, 27.85], [101.0, 27.75], [100.75, 27.85], [100.5, 27.75], [100.0, 27.96], [99.68, 27.82], [99.53, 27.47], [99.0, 27.25], [98.75, 27.35], [98.5, 27.25], [97.97, 27.47], [97.75, 28.0], [97.85, 28.25], [97.75, 28.5], [97.85, 28.75], [97.82, 28.82], [97.47, 28.97]]]]}, "2024-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.47, 28.97], [97.25, 29.5], [97.47, 30.03], [97.82, 30.18], [97.97, 30.53], [98.5, 30.75], [98.75, 30.65], [99.0, 30.75], [99.25, 30.65], [99.5, 30.75], [99.75, 30.65], [100.0, 30.75], [100.3, 30.63], [100.47, 31.03], [101.0, 31.25], [101.53, 31.03], [101.68, 30.68], [102.03, 30.53], [102.25, 30.0], [102.04, 29.5], [102.25, 29.0], [102.15, 28.75], [102.25, 28.5], [102.03, 27.97], [101.5, 27.75], [101.25, 27.85], [101.0, 27.75], [100.75, 27.85], [100.5, 27.75], [100.0, 27.96], [99.68, 27.82], [99.53, 27.47], [99.0, 27.25], [98.75, 27.35], [98.5, 27.25], [97.97, 27.47], [97.75, 28.0], [97.85, 28.25], [97.75, 28.5], [97.85, 28.75], [97.82, 28.82], [97.47, 28.97]]]]}, "2024-12-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.75, 28.5], [97.85, 28.75], [97.75, 29.0], [97.97, 29.53], [98.32, 29.68], [98.35, 29.75], [98.25, 30.0], [98.47, 30.53], [99.0, 30.75], [99.25, 30.65], [99.5, 30.75], [99.75, 30.65], [100.0, 30.75], [100.3, 30.63], [100.47, 31.03], [101.0, 31.25], [101.53, 31.03], [101.68, 30.68], [102.03, 30.53], [102.25, 30.0], [102.04, 29.5], [102.25, 29.0], [102.15, 28.75], [102.25, 28.5], [102.03, 27.97], [101.5, 27.75], [101.25, 27.85], [101.0, 27.75], [100.75, 27.85], [100.5, 27.75], [99.97, 27.97], [99.8, 28.38], [99.68, 28.32], [99.65, 28.25], [99.75, 28.0], [99.53, 27.47], [99.0, 27.25], [98.75, 27.35], [98.5, 27.25], [97.97, 27.47], [97.75, 28.0], [97.85, 28.25], [97.75, 28.5]]]]}, "2024-12-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.75, 28.5], [97.97, 29.03], [98.5, 29.25], [98.75, 29.15], [98.82, 29.18], [98.97, 29.53], [99.5, 29.75], [100.03, 29.53], [100.25, 29.0], [100.03, 28.47], [99.68, 28.32], [99.53, 27.97], [99.18, 27.82], [99.03, 27.47], [98.5, 27.25], [97.97, 27.47], [97.75, 28.0], [97.85, 28.25], [97.75, 28.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.967038228048466}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.589683949996311}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-0.40828170776364914, -0.3277674357095748, -0.8731893993559083, -0.898977406819597, -2.662181635256161, -1.6620883517795164, -1.1458901581940495, -2.159942483210841, -2.9417238871256473]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.40828170776364914, 0.963655090332054, 1.2799100240071652, 0.5142875671386946, 0.4767751057942746, 1.7137797037760834, 3.2497713724772552, 1.9610521952311615, -1.2761355082193973]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.765647409347821, 5.52104382559321, 5.765060429460334, 5.254683652674214, 4.9253819404557015, 5.890949097358758, 6.310950228264386, 5.287265447476856, 4.18678336101685]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.765647409347821, 6.342413957284407, 6.820677789558715, 6.723300582910269, 6.515858104891663, 7.727525866857206, 7.967038228048466, 7.068626659373024, 4.416474560178585]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3468768179660546, 1.5632182206505023, 1.490900629027826, 1.3971147682688367, 1.3267437447519483, 1.6707410940551919, 1.8068380874668906, 1.4414987876969934, 1.0839876575487735]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3468768179660546, 1.8407414911813105, 1.9752674455856136, 1.6573961891699316, 1.7024763142837267, 2.1595875060676692, 2.2533389927315617, 1.7404976208338796, 1.2074444449872863]}}