{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:16:58.557929", "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": "2022-Jan-05_to_2022-Jan-12_100.0_33.0"}, "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": 2022010001647}, "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": "January 05 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 12 2022"}, "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": 56455.255151769066}, "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": 33.0}, "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": 97.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 100.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 32.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 36.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[98.35, 33.75], [98.32, 33.82], [97.97, 33.97], [97.75, 34.5], [97.85, 34.75], [97.82, 34.82], [97.75, 34.85], [97.5, 34.75], [97.25, 34.85], [97.0, 34.75], [96.47, 34.97], [96.25, 35.5], [96.47, 36.03], [97.0, 36.25], [97.25, 36.15], [97.5, 36.25], [97.75, 36.15], [97.82, 36.18], [97.97, 36.53], [98.5, 36.75], [99.03, 36.53], [99.25, 36.0], [99.15, 35.75], [99.18, 35.68], [99.53, 35.53], [99.75, 35.0], [99.57, 34.57], [100.0, 34.75], [100.53, 34.53], [100.75, 34.0], [100.65, 33.75], [100.68, 33.68], [101.03, 33.53], [101.25, 33.0], [101.15, 32.75], [101.25, 32.5], [101.03, 31.97], [100.68, 31.82], [100.53, 31.47], [100.0, 31.25], [99.47, 31.47], [99.32, 31.82], [99.25, 31.85], [99.0, 31.75], [98.47, 31.97], [98.32, 32.32], [97.97, 32.47], [97.75, 33.0], [97.97, 33.53], [98.32, 33.68], [98.35, 33.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Tibetan-Plateau", "E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.0, 34.75], [96.47, 34.97], [96.25, 35.5], [96.47, 36.03], [97.0, 36.25], [97.25, 36.15], [97.5, 36.25], [97.75, 36.15], [97.82, 36.18], [97.97, 36.53], [98.5, 36.75], [99.03, 36.53], [99.25, 36.0], [99.13, 35.7], [99.53, 35.53], [99.75, 35.0], [99.57, 34.57], [100.0, 34.75], [100.53, 34.53], [100.75, 34.0], [100.65, 33.75], [100.68, 33.68], [101.03, 33.53], [101.25, 33.0], [101.15, 32.75], [101.25, 32.5], [101.03, 31.97], [100.5, 31.75], [100.25, 31.85], [100.0, 31.75], [99.75, 31.85], [99.5, 31.75], [98.97, 31.97], [98.75, 32.5], [98.85, 32.75], [98.75, 33.0], [98.85, 33.25], [98.82, 33.32], [98.47, 33.47], [98.32, 33.82], [97.97, 33.97], [97.75, 34.5], [97.85, 34.75], [97.82, 34.82], [97.75, 34.85], [97.5, 34.75], [97.25, 34.85], [97.0, 34.75]]]]}, "2022-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.0, 34.75], [96.47, 34.97], [96.25, 35.5], [96.47, 36.03], [97.0, 36.25], [97.25, 36.15], [97.5, 36.25], [97.75, 36.15], [97.82, 36.18], [97.97, 36.53], [98.5, 36.75], [99.03, 36.53], [99.25, 36.0], [99.13, 35.7], [99.53, 35.53], [99.75, 35.0], [99.57, 34.57], [100.0, 34.75], [100.53, 34.53], [100.75, 34.0], [100.65, 33.75], [100.68, 33.68], [101.03, 33.53], [101.25, 33.0], [101.15, 32.75], [101.25, 32.5], [101.03, 31.97], [100.5, 31.75], [100.25, 31.85], [100.0, 31.75], [99.75, 31.85], [99.5, 31.75], [98.97, 31.97], [98.75, 32.5], [98.85, 32.75], [98.75, 33.0], [98.85, 33.25], [98.82, 33.32], [98.47, 33.47], [98.32, 33.82], [97.97, 33.97], [97.75, 34.5], [97.85, 34.75], [97.82, 34.82], [97.75, 34.85], [97.5, 34.75], [97.25, 34.85], [97.0, 34.75]]]]}, "2022-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.0, 34.75], [96.47, 34.97], [96.25, 35.5], [96.47, 36.03], [97.0, 36.25], [97.25, 36.15], [97.5, 36.25], [97.75, 36.15], [97.82, 36.18], [97.97, 36.53], [98.5, 36.75], [99.03, 36.53], [99.25, 36.0], [99.13, 35.7], [99.53, 35.53], [99.75, 35.0], [99.57, 34.57], [100.0, 34.75], [100.53, 34.53], [100.75, 34.0], [100.65, 33.75], [100.68, 33.68], [101.03, 33.53], [101.25, 33.0], [101.15, 32.75], [101.25, 32.5], [101.03, 31.97], [100.5, 31.75], [100.25, 31.85], [100.0, 31.75], [99.75, 31.85], [99.5, 31.75], [98.97, 31.97], [98.75, 32.5], [98.85, 32.75], [98.75, 33.0], [98.85, 33.25], [98.82, 33.32], [98.47, 33.47], [98.32, 33.82], [97.97, 33.97], [97.75, 34.5], [97.85, 34.75], [97.82, 34.82], [97.75, 34.85], [97.5, 34.75], [97.25, 34.85], [97.0, 34.75]]]]}, "2022-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.97, 32.47], [98.75, 33.0], [98.97, 33.53], [99.5, 33.75], [99.75, 33.65], [100.0, 33.75], [100.53, 33.53], [100.75, 33.0], [100.53, 32.47], [100.0, 32.25], [99.75, 32.35], [99.5, 32.25], [98.97, 32.47]]], [[[96.47, 34.97], [96.25, 35.5], [96.47, 36.03], [97.0, 36.25], [97.25, 36.15], [97.5, 36.25], [97.75, 36.15], [97.82, 36.18], [97.97, 36.53], [98.5, 36.75], [99.03, 36.53], [99.25, 36.0], [99.03, 35.47], [98.68, 35.32], [98.53, 34.97], [98.0, 34.75], [97.75, 34.85], [97.5, 34.75], [97.25, 34.85], [97.0, 34.75], [96.47, 34.97]]]]}, "2022-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.0, 34.75], [96.47, 34.97], [96.25, 35.5], [96.47, 36.03], [97.0, 36.25], [97.25, 36.15], [97.5, 36.25], [97.75, 36.15], [97.82, 36.18], [97.97, 36.53], [98.5, 36.75], [99.03, 36.53], [99.25, 36.0], [99.15, 35.75], [99.18, 35.68], [99.53, 35.53], [99.75, 35.0], [99.57, 34.57], [100.0, 34.75], [100.53, 34.53], [100.75, 34.0], [100.65, 33.75], [100.68, 33.68], [101.03, 33.53], [101.25, 33.0], [101.15, 32.75], [101.25, 32.5], [101.03, 31.97], [100.5, 31.75], [100.25, 31.85], [100.0, 31.75], [99.47, 31.97], [99.32, 32.32], [98.97, 32.47], [98.75, 33.0], [98.85, 33.25], [98.75, 33.5], [98.93, 33.93], [98.5, 33.75], [97.97, 33.97], [97.75, 34.5], [97.85, 34.75], [97.82, 34.82], [97.75, 34.85], [97.5, 34.75], [97.25, 34.85], [97.0, 34.75]], [[99.07, 34.07], [99.32, 34.18], [99.43, 34.43], [99.18, 34.32], [99.07, 34.07]]]]}, "2022-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.0, 34.75], [96.47, 34.97], [96.25, 35.5], [96.47, 36.03], [97.0, 36.25], [97.5, 36.04], [97.82, 36.18], [97.97, 36.53], [98.5, 36.75], [99.03, 36.53], [99.25, 36.0], [99.15, 35.75], [99.18, 35.68], [99.53, 35.53], [99.75, 35.0], [99.57, 34.57], [100.0, 34.75], [100.53, 34.53], [100.75, 34.0], [100.65, 33.75], [100.68, 33.68], [101.03, 33.53], [101.25, 33.0], [101.15, 32.75], [101.25, 32.5], [101.03, 31.97], [100.68, 31.82], [100.53, 31.47], [100.0, 31.25], [99.47, 31.47], [99.32, 31.82], [99.25, 31.85], [99.0, 31.75], [98.47, 31.97], [98.32, 32.32], [97.97, 32.47], [97.75, 33.0], [97.97, 33.53], [98.32, 33.68], [98.35, 33.75], [98.32, 33.82], [97.97, 33.97], [97.75, 34.5], [97.85, 34.75], [97.82, 34.82], [97.5, 34.96], [97.0, 34.75]]]]}, "2022-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.0, 34.75], [96.47, 34.97], [96.25, 35.5], [96.47, 36.03], [97.0, 36.25], [97.5, 36.04], [97.82, 36.18], [97.97, 36.53], [98.5, 36.75], [99.03, 36.53], [99.25, 36.0], [99.15, 35.75], [99.18, 35.68], [99.53, 35.53], [99.75, 35.0], [99.57, 34.57], [100.0, 34.75], [100.53, 34.53], [100.75, 34.0], [100.65, 33.75], [100.68, 33.68], [101.03, 33.53], [101.25, 33.0], [101.15, 32.75], [101.25, 32.5], [101.03, 31.97], [100.68, 31.82], [100.53, 31.47], [100.0, 31.25], [99.47, 31.47], [99.32, 31.82], [99.25, 31.85], [99.0, 31.75], [98.47, 31.97], [98.32, 32.32], [97.97, 32.47], [97.75, 33.0], [97.97, 33.53], [98.32, 33.68], [98.35, 33.75], [98.32, 33.82], [97.97, 33.97], [97.75, 34.5], [97.85, 34.75], [97.82, 34.82], [97.5, 34.96], [97.0, 34.75]]]]}, "2022-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.97, 32.47], [97.75, 33.0], [97.97, 33.53], [98.32, 33.68], [98.35, 33.75], [98.32, 33.82], [97.97, 33.97], [97.75, 34.5], [97.97, 35.03], [98.5, 35.25], [99.03, 35.03], [99.18, 34.68], [99.5, 34.54], [100.0, 34.75], [100.53, 34.53], [100.75, 34.0], [100.65, 33.75], [100.68, 33.68], [101.03, 33.53], [101.25, 33.0], [101.15, 32.75], [101.25, 32.5], [101.03, 31.97], [100.68, 31.82], [100.53, 31.47], [100.0, 31.25], [99.47, 31.47], [99.32, 31.82], [99.25, 31.85], [99.0, 31.75], [98.47, 31.97], [98.32, 32.32], [97.97, 32.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.861418702152207}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.3181897050888995}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-11.245781827714836, -10.489800356011358, -11.38549701866583, -13.66476349813479, -12.162087298152358, -11.85947357043392, -11.31026106063399, -10.027590680595438]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-9.072025189683416, -8.068755961315503, -8.702660029354263, -11.254403417296828, -9.227468902359021, -9.099197346955862, -9.37193533454058, -8.324282657261392]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.133785337638089, 6.978622210155568, 6.235234112120224, 5.017650613857593, 5.832347095112329, 5.99927563963515, 6.530013935626191, 7.061081010506018]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.948954304888332, 8.861418702152207, 8.051625964728942, 6.168526674683818, 7.423395410721724, 7.549427258402517, 7.807337242564159, 8.498122349678482]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4852103514115333, 1.723909350963304, 1.5615224715725413, 1.3963224090226103, 1.5550650354891575, 1.5728138877709756, 1.7356160186005436, 1.7802062701124455]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8780455039682065, 2.340430875299527, 1.8390318794244966, 1.515944895006492, 1.84165099538826, 1.8645578399005311, 2.16922190300329, 2.0307819092872417]}}