{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:40.589103", "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-15_to_2022-Apr-18_260.0_29.5"}, "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": 2022040001958}, "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 15 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 18 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 56601.29357393311}, "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": ["Mexico", "United States"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "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": 29.5}, "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": 260.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "260.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 257.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 263.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 30.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-102.5, 30.25], [-102.0, 30.04], [-101.68, 30.18], [-101.53, 30.53], [-101.0, 30.75], [-100.75, 30.65], [-100.5, 30.75], [-100.25, 30.65], [-100.0, 30.75], [-99.75, 30.65], [-99.5, 30.75], [-98.97, 30.53], [-98.82, 30.18], [-98.47, 30.03], [-98.32, 29.68], [-98.25, 29.65], [-98.0, 29.75], [-97.75, 29.65], [-97.5, 29.75], [-97.25, 29.65], [-97.0, 29.75], [-96.75, 29.65], [-96.5, 29.75], [-95.97, 29.53], [-95.75, 29.0], [-95.97, 28.47], [-96.32, 28.32], [-96.47, 27.97], [-97.0, 27.75], [-97.25, 27.85], [-97.5, 27.75], [-98.03, 27.97], [-98.18, 28.32], [-98.25, 28.35], [-98.5, 28.25], [-99.03, 28.47], [-99.18, 28.82], [-99.25, 28.85], [-99.32, 28.82], [-99.47, 28.47], [-100.0, 28.25], [-100.5, 28.46], [-101.0, 28.25], [-101.5, 28.46], [-102.0, 28.25], [-102.53, 28.47], [-102.68, 28.82], [-103.03, 28.97], [-103.25, 29.5], [-103.03, 30.03], [-102.5, 30.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America", "N.Central-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-04-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.02999999999997, 28.97], [-103.25, 29.5], [-103.02999999999997, 30.03], [-102.5, 30.25], [-101.97000000000003, 30.03], [-101.82, 29.68], [-101.47000000000003, 29.53], [-101.25, 29.0], [-101.47000000000003, 28.47], [-102.0, 28.25], [-102.52999999999997, 28.47], [-102.68, 28.82], [-103.02999999999997, 28.97]]]]}, "2022-04-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.02999999999997, 28.97], [-103.25, 29.5], [-103.02999999999997, 30.03], [-102.5, 30.25], [-102.0, 30.04], [-101.68, 30.18], [-101.52999999999997, 30.53], [-101.0, 30.75], [-100.75, 30.65], [-100.5, 30.75], [-100.25, 30.65], [-100.0, 30.75], [-99.75, 30.65], [-99.5, 30.75], [-98.97000000000003, 30.53], [-98.82, 30.18], [-98.47000000000003, 30.03], [-98.32, 29.68], [-98.25, 29.65], [-98.0, 29.75], [-97.75, 29.65], [-97.5, 29.75], [-97.25, 29.65], [-97.0, 29.75], [-96.75, 29.65], [-96.5, 29.75], [-95.97000000000003, 29.53], [-95.75, 29.0], [-95.97000000000003, 28.47], [-96.32, 28.32], [-96.47000000000003, 27.97], [-97.0, 27.75], [-97.25, 27.85], [-97.5, 27.75], [-98.02999999999997, 27.97], [-98.18, 28.32], [-98.25, 28.35], [-98.5, 28.25], [-99.02999999999997, 28.47], [-99.18, 28.82], [-99.25, 28.85], [-99.32, 28.82], [-99.47000000000003, 28.47], [-100.0, 28.25], [-100.5, 28.46], [-101.0, 28.25], [-101.5, 28.46], [-102.0, 28.25], [-102.52999999999997, 28.47], [-102.68, 28.82], [-103.02999999999997, 28.97]]]]}, "2022-04-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.02999999999997, 28.97], [-103.25, 29.5], [-103.02999999999997, 30.03], [-102.5, 30.25], [-102.0, 30.04], [-101.68, 30.18], [-101.52999999999997, 30.53], [-101.0, 30.75], [-100.75, 30.65], [-100.5, 30.75], [-100.25, 30.65], [-100.0, 30.75], [-99.75, 30.65], [-99.5, 30.75], [-98.97000000000003, 30.53], [-98.82, 30.18], [-98.47000000000003, 30.03], [-98.32, 29.68], [-98.25, 29.65], [-98.0, 29.75], [-97.75, 29.65], [-97.5, 29.75], [-97.25, 29.65], [-97.0, 29.75], [-96.75, 29.65], [-96.5, 29.75], [-95.97000000000003, 29.53], [-95.75, 29.0], [-95.97000000000003, 28.47], [-96.32, 28.32], [-96.47000000000003, 27.97], [-97.0, 27.75], [-97.25, 27.85], [-97.5, 27.75], [-98.02999999999997, 27.97], [-98.18, 28.32], [-98.25, 28.35], [-98.5, 28.25], [-99.02999999999997, 28.47], [-99.18, 28.82], [-99.25, 28.85], [-99.32, 28.82], [-99.47000000000003, 28.47], [-100.0, 28.25], [-100.5, 28.46], [-101.0, 28.25], [-101.5, 28.46], [-102.0, 28.25], [-102.52999999999997, 28.47], [-102.68, 28.82], [-103.02999999999997, 28.97]]]]}, "2022-04-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.02999999999997, 28.97], [-102.25, 29.5], [-102.02999999999997, 30.03], [-101.68, 30.18], [-101.52999999999997, 30.53], [-101.0, 30.75], [-100.75, 30.65], [-100.5, 30.75], [-100.25, 30.65], [-100.0, 30.75], [-99.75, 30.65], [-99.5, 30.75], [-98.97000000000003, 30.53], [-98.82, 30.18], [-98.47000000000003, 30.03], [-98.32, 29.68], [-98.25, 29.65], [-98.0, 29.75], [-97.75, 29.65], [-97.5, 29.75], [-97.25, 29.65], [-97.0, 29.75], [-96.75, 29.65], [-96.5, 29.75], [-95.97000000000003, 29.53], [-95.75, 29.0], [-95.97000000000003, 28.47], [-96.32, 28.32], [-96.47000000000003, 27.97], [-97.0, 27.75], [-97.25, 27.85], [-97.5, 27.75], [-98.02999999999997, 27.97], [-98.18, 28.32], [-98.25, 28.35], [-98.5, 28.25], [-99.02999999999997, 28.47], [-99.18, 28.82], [-99.25, 28.85], [-99.32, 28.82], [-99.47000000000003, 28.47], [-100.0, 28.25], [-100.5, 28.46], [-101.0, 28.25], [-101.52999999999997, 28.47], [-101.68, 28.82], [-102.02999999999997, 28.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.01681105196036}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.942919321436385}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.076120113701336, 25.6127777611228, 26.736697018620077, 25.729939466160943]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.721154591703964, 27.188172001606063, 29.336672407370543, 28.04778733671168]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.3308031472660105, 4.691900866947021, 5.735443529709501, 4.408846243482805]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.472863826385549, 5.610673726593916, 7.01681105196036, 5.293535455730364]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.1276660817093545, 1.367351126769239, 1.7298074647106378, 1.4035618968285564]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.1339769597746547, 1.5577977523706348, 2.025252488651962, 1.6572349271829843]}}