{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:55.482735", "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-Jul-18_to_2022-Jul-23_258.5_40.0"}, "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": 2022070002476}, "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": "July 18 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 23 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 56162.90783930562}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 40.0}, "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": 258.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "258.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 256.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 260.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 40.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 42.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-101.5, 39.25], [-101.75, 39.35], [-102.0, 39.25], [-102.25, 39.35], [-102.5, 39.25], [-103.03, 39.47], [-103.18, 39.82], [-103.25, 39.85], [-103.5, 39.75], [-104.03, 39.97], [-104.25, 40.5], [-104.15, 40.75], [-104.25, 41.0], [-104.03, 41.53], [-103.5, 41.75], [-103.25, 41.65], [-103.18, 41.68], [-103.03, 42.03], [-102.68, 42.18], [-102.53, 42.53], [-102.0, 42.75], [-101.47, 42.53], [-101.32, 42.18], [-101.25, 42.15], [-101.0, 42.25], [-100.47, 42.03], [-100.32, 41.68], [-99.97, 41.53], [-99.82, 41.18], [-99.47, 41.03], [-99.25, 40.5], [-99.47, 39.97], [-100.0, 39.75], [-100.25, 39.85], [-100.32, 39.82], [-100.47, 39.47], [-101.0, 39.25], [-101.25, 39.35], [-101.5, 39.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.02999999999997, 40.53], [-101.5, 40.75], [-100.97000000000003, 40.53], [-100.75, 40.0], [-100.97000000000003, 39.47], [-101.5, 39.25], [-102.02999999999997, 39.47], [-102.25, 40.0], [-102.02999999999997, 40.53]]]]}, "2022-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.02999999999997, 40.53], [-101.5, 40.75], [-100.97000000000003, 40.53], [-100.75, 40.0], [-100.97000000000003, 39.47], [-101.5, 39.25], [-102.02999999999997, 39.47], [-102.25, 40.0], [-102.02999999999997, 40.53]]]]}, "2022-07-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.02999999999997, 40.53], [-101.5, 40.75], [-100.97000000000003, 40.53], [-100.75, 40.0], [-100.97000000000003, 39.47], [-101.5, 39.25], [-102.02999999999997, 39.47], [-102.25, 40.0], [-102.02999999999997, 40.53]]]]}, "2022-07-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-104.25, 41.0], [-104.03, 41.53], [-103.5, 41.75], [-103.25, 41.65], [-103.18, 41.68], [-103.02999999999997, 42.03], [-102.68, 42.18], [-102.52999999999997, 42.53], [-102.0, 42.75], [-101.47000000000003, 42.53], [-101.32, 42.18], [-101.25, 42.15], [-101.0, 42.25], [-100.47000000000003, 42.03], [-100.32, 41.68], [-99.97000000000003, 41.53], [-99.82, 41.18], [-99.47000000000003, 41.03], [-99.25, 40.5], [-99.47000000000003, 39.97], [-100.0, 39.75], [-100.25, 39.85], [-100.32, 39.82], [-100.47000000000003, 39.47], [-101.0, 39.25], [-101.25, 39.35], [-101.5, 39.25], [-101.75, 39.35], [-102.0, 39.25], [-102.25, 39.35], [-102.5, 39.25], [-103.02999999999997, 39.47], [-103.18, 39.82], [-103.25, 39.85], [-103.5, 39.75], [-104.03, 39.97], [-104.25, 40.5], [-104.15, 40.75], [-104.25, 41.0]]]]}, "2022-07-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-104.25, 41.0], [-104.03, 41.53], [-103.5, 41.75], [-103.25, 41.65], [-103.18, 41.68], [-103.02999999999997, 42.03], [-102.68, 42.18], [-102.52999999999997, 42.53], [-102.0, 42.75], [-101.47000000000003, 42.53], [-101.32, 42.18], [-101.25, 42.15], [-101.0, 42.25], [-100.47000000000003, 42.03], [-100.32, 41.68], [-99.97000000000003, 41.53], [-99.82, 41.18], [-99.47000000000003, 41.03], [-99.25, 40.5], [-99.47000000000003, 39.97], [-100.0, 39.75], [-100.25, 39.85], [-100.32, 39.82], [-100.47000000000003, 39.47], [-101.0, 39.25], [-101.25, 39.35], [-101.5, 39.25], [-101.75, 39.35], [-102.0, 39.25], [-102.25, 39.35], [-102.5, 39.25], [-103.02999999999997, 39.47], [-103.18, 39.82], [-103.25, 39.85], [-103.5, 39.75], [-104.03, 39.97], [-104.25, 40.5], [-104.15, 40.75], [-104.25, 41.0]]]]}, "2022-07-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-104.25, 41.0], [-104.03, 41.53], [-103.5, 41.75], [-103.25, 41.65], [-103.18, 41.68], [-103.02999999999997, 42.03], [-102.68, 42.18], [-102.52999999999997, 42.53], [-102.0, 42.75], [-101.47000000000003, 42.53], [-101.32, 42.18], [-101.25, 42.15], [-101.0, 42.25], [-100.47000000000003, 42.03], [-100.32, 41.68], [-99.97000000000003, 41.53], [-99.82, 41.18], [-99.47000000000003, 41.03], [-99.25, 40.5], [-99.47000000000003, 39.97], [-100.0, 39.75], [-100.25, 39.85], [-100.32, 39.82], [-100.47000000000003, 39.47], [-101.0, 39.25], [-101.25, 39.35], [-101.5, 39.25], [-101.75, 39.35], [-102.0, 39.25], [-102.25, 39.35], [-102.5, 39.25], [-103.02999999999997, 39.47], [-103.18, 39.82], [-103.25, 39.85], [-103.5, 39.75], [-104.03, 39.97], [-104.25, 40.5], [-104.15, 40.75], [-104.25, 41.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.735946703884565}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.09545774945938}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [30.81101899068193, 33.640827758324406, 29.732191798331144, 29.39936270612054, 29.79374395318547, 29.986338718429067]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [30.81101899068193, 33.640827758324406, 29.732191798331144, 30.836815098496857, 30.644435974697842, 32.29182879102109]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.982107670934965, 7.735946703884565, 3.8864271878703676, 4.639033455377683, 5.0701656560254476, 5.522252957212018]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.982107670934965, 7.735946703884565, 3.8864271878703676, 5.28807681569441, 5.53651058156413, 6.780961864401945]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5298438316825855, 2.353398544787135, 1.1847069413660742, 1.4519744455707182, 1.5632579881881032, 1.6763860887190674]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5298438316825855, 2.353398544787135, 1.1847069413660742, 1.6552575637656444, 1.7092099785924093, 2.0142586552088093]}}