{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:30:50.699023", "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-Apr-27_to_2022-Apr-29_261.0_40.5"}, "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": 2022040002496}, "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 27 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 29 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 52447.012455124284}, "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": ["United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North America"]}, "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": 40.5}, "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": 261.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "261.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 256.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 261.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 41.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.53, 39.03], [-103.18, 39.18], [-103.03, 39.53], [-102.5, 39.75], [-102.25, 39.65], [-102.0, 39.75], [-101.5, 39.54], [-101.12, 39.7], [-101.25, 40.0], [-101.15, 40.25], [-101.25, 40.5], [-101.03, 41.03], [-100.68, 41.18], [-100.53, 41.53], [-100.0, 41.75], [-99.75, 41.65], [-99.5, 41.75], [-99.25, 41.65], [-99.0, 41.75], [-98.75, 41.65], [-98.5, 41.75], [-97.97, 41.53], [-97.75, 41.0], [-97.97, 40.47], [-98.32, 40.32], [-98.47, 39.97], [-99.0, 39.75], [-99.25, 39.85], [-99.32, 39.82], [-99.35, 39.75], [-99.25, 39.5], [-99.47, 38.97], [-99.82, 38.82], [-99.97, 38.47], [-100.5, 38.25], [-100.75, 38.35], [-100.82, 38.32], [-100.97, 37.97], [-101.32, 37.82], [-101.47, 37.47], [-102.0, 37.25], [-102.25, 37.35], [-102.5, 37.25], [-102.75, 37.35], [-103.0, 37.25], [-103.53, 37.47], [-103.75, 38.0], [-103.65, 38.25], [-103.75, 38.5], [-103.53, 39.03]]]]}, "2022-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.53, 39.03], [-103.18, 39.18], [-103.03, 39.53], [-102.5, 39.75], [-102.25, 39.65], [-102.0, 39.75], [-101.5, 39.54], [-101.12, 39.7], [-101.25, 40.0], [-101.15, 40.25], [-101.25, 40.5], [-101.03, 41.03], [-100.68, 41.18], [-100.53, 41.53], [-100.0, 41.75], [-99.75, 41.65], [-99.5, 41.75], [-99.25, 41.65], [-99.0, 41.75], [-98.75, 41.65], [-98.5, 41.75], [-97.97, 41.53], [-97.75, 41.0], [-97.97, 40.47], [-98.32, 40.32], [-98.47, 39.97], [-99.0, 39.75], [-99.25, 39.85], [-99.32, 39.82], [-99.35, 39.75], [-99.25, 39.5], [-99.47, 38.97], [-99.82, 38.82], [-99.97, 38.47], [-100.5, 38.25], [-100.75, 38.35], [-100.82, 38.32], [-100.97, 37.97], [-101.32, 37.82], [-101.47, 37.47], [-102.0, 37.25], [-102.25, 37.35], [-102.5, 37.25], [-102.75, 37.35], [-103.0, 37.25], [-103.53, 37.47], [-103.75, 38.0], [-103.65, 38.25], [-103.75, 38.5], [-103.53, 39.03]]]]}, "2022-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.53, 39.03], [-103.18, 39.18], [-103.03, 39.53], [-102.5, 39.75], [-102.25, 39.65], [-102.0, 39.75], [-101.5, 39.54], [-101.12, 39.7], [-101.25, 40.0], [-101.15, 40.25], [-101.25, 40.5], [-101.03, 41.03], [-100.68, 41.18], [-100.53, 41.53], [-100.0, 41.75], [-99.75, 41.65], [-99.5, 41.75], [-99.25, 41.65], [-99.0, 41.75], [-98.75, 41.65], [-98.5, 41.75], [-97.97, 41.53], [-97.75, 41.0], [-97.97, 40.47], [-98.32, 40.32], [-98.47, 39.97], [-99.0, 39.75], [-99.25, 39.85], [-99.32, 39.82], [-99.35, 39.75], [-99.25, 39.5], [-99.47, 38.97], [-99.82, 38.82], [-99.97, 38.47], [-100.5, 38.25], [-100.75, 38.35], [-100.82, 38.32], [-100.97, 37.97], [-101.32, 37.82], [-101.47, 37.47], [-102.0, 37.25], [-102.25, 37.35], [-102.5, 37.25], [-102.75, 37.35], [-103.0, 37.25], [-103.53, 37.47], [-103.75, 38.0], [-103.65, 38.25], [-103.75, 38.5], [-103.53, 39.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.221306935560392}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.889934572724803}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.479045944538086, 19.635976994347345, 19.28654824393169]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.681423383804997, 21.234648021515056, 20.824129058513563]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.46148949761041, 7.408981727337269, 6.7993324932267285]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.794554251253942, 9.221306935560392, 7.400673925015212]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4568282637083911, 1.690914235717341, 1.562862173773746]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6923307040745017, 2.1716868311623325, 1.7628712424309687]}}