{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:14:23.507814", "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": "2020-Jun-12_to_2020-Jun-14_254.0_44.5"}, "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": 2020060002062}, "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": "June 12 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 14 2020"}, "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": 144473.05300888416}, "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": 44.5}, "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": 254.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "254.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 250.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 257.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 47.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-110.25, 46.0], [-110.03, 46.53], [-109.5, 46.75], [-109.25, 46.646], [-109.0, 46.75], [-108.75, 46.646], [-108.5, 46.75], [-108.25, 46.646], [-108.177, 46.677], [-108.03, 47.03], [-107.677, 47.177], [-107.53, 47.53], [-107.0, 47.75], [-106.75, 47.646], [-106.677, 47.677], [-106.53, 48.03], [-106.0, 48.25], [-105.47, 48.03], [-105.323, 47.677], [-104.97, 47.53], [-104.75, 47.0], [-104.875, 46.698], [-104.47, 46.53], [-104.25, 46.0], [-104.354, 45.75], [-104.25, 45.5], [-104.354, 45.25], [-104.323, 45.177], [-103.97, 45.03], [-103.75, 44.5], [-103.854, 44.25], [-103.823, 44.177], [-103.47, 44.03], [-103.323, 43.677], [-103.25, 43.646], [-103.0, 43.75], [-102.47, 43.53], [-102.25, 43.0], [-102.47, 42.47], [-103.0, 42.25], [-103.25, 42.354], [-103.5, 42.25], [-103.75, 42.354], [-104.0, 42.25], [-104.25, 42.354], [-104.5, 42.25], [-104.75, 42.354], [-105.0, 42.25], [-105.53, 42.47], [-105.677, 42.823], [-105.75, 42.854], [-106.0, 42.75], [-106.25, 42.854], [-106.5, 42.75], [-106.75, 42.854], [-107.0, 42.75], [-107.25, 42.854], [-107.323, 42.823], [-107.47, 42.47], [-108.0, 42.25], [-108.53, 42.47], [-108.75, 43.0], [-108.646, 43.25], [-108.677, 43.323], [-109.03, 43.47], [-109.25, 44.0], [-109.146, 44.25], [-109.25, 44.5], [-109.146, 44.75], [-109.177, 44.823], [-109.53, 44.97], [-109.677, 45.323], [-110.03, 45.47], [-110.25, 46.0]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.North-America", "C.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-06-12T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-109.67677669529664, 45.32322330470336], [-110.03033008588991, 45.46966991411009], [-110.25, 46.0], [-110.03033008588991, 46.53033008588991], [-109.5, 46.75], [-109.25, 46.64644660940672], [-109.0, 46.75], [-108.75, 46.64644660940672], [-108.5, 46.75], [-108.25, 46.64644660940672], [-108.17677669529664, 46.67677669529664], [-108.03033008588991, 47.03033008588991], [-107.67677669529664, 47.17677669529664], [-107.53033008588991, 47.53033008588991], [-107.0, 47.75], [-106.75, 47.64644660940672], [-106.67677669529664, 47.67677669529664], [-106.53033008588991, 48.03033008588991], [-106.0, 48.25], [-105.46966991411009, 48.03033008588991], [-105.32322330470336, 47.67677669529664], [-104.96966991411009, 47.53033008588991], [-104.75, 47.0], [-104.875, 46.69822330470336], [-104.46966991411009, 46.53033008588991], [-104.25, 46.0], [-104.35355339059328, 45.75], [-104.25, 45.5], [-104.35355339059328, 45.25], [-104.32322330470336, 45.17677669529663], [-103.96966991411011, 45.03033008588991], [-103.75, 44.5], [-103.85355339059328, 44.25], [-103.82322330470339, 44.17677669529664], [-103.46966991411011, 44.03033008588991], [-103.32322330470339, 43.67677669529664], [-103.25, 43.64644660940672], [-103.0, 43.75], [-102.46966991411011, 43.53033008588991], [-102.25, 43.0], [-102.46966991411011, 42.46966991411009], [-103.0, 42.25], [-103.25, 42.35355339059328], [-103.5, 42.25], [-103.75, 42.35355339059328], [-104.0, 42.25], [-104.25, 42.35355339059328], [-104.5, 42.25], [-104.75, 42.35355339059328], [-105.0, 42.25], [-105.53033008588991, 42.46966991411009], [-105.67677669529664, 42.82322330470336], [-105.75, 42.85355339059328], [-106.0, 42.75], [-106.25, 42.85355339059328], [-106.5, 42.75], [-106.75, 42.85355339059328], [-107.0, 42.75], [-107.25, 42.85355339059328], [-107.32322330470336, 42.82322330470336], [-107.46966991411009, 42.46966991411009], [-108.0, 42.25], [-108.53033008588991, 42.46966991411009], [-108.75, 43.0], [-108.64644660940672, 43.25], [-108.67677669529664, 43.32322330470336], [-109.03033008588991, 43.46966991411009], [-109.25, 44.0], [-109.14644660940672, 44.25], [-109.25, 44.5], [-109.14644660940672, 44.75], [-109.17677669529664, 44.82322330470336], [-109.53033008588991, 44.96966991411009], [-109.67677669529664, 45.32322330470336]]]}, "2020-06-13T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-109.67677669529664, 45.32322330470336], [-110.03033008588991, 45.46966991411009], [-110.25, 46.0], [-110.03033008588991, 46.53033008588991], [-109.5, 46.75], [-109.25, 46.64644660940672], [-109.0, 46.75], [-108.75, 46.64644660940672], [-108.5, 46.75], [-108.25, 46.64644660940672], [-108.17677669529664, 46.67677669529664], [-108.03033008588991, 47.03033008588991], [-107.67677669529664, 47.17677669529664], [-107.53033008588991, 47.53033008588991], [-107.0, 47.75], [-106.75, 47.64644660940672], [-106.67677669529664, 47.67677669529664], [-106.53033008588991, 48.03033008588991], [-106.0, 48.25], [-105.46966991411009, 48.03033008588991], [-105.32322330470336, 47.67677669529664], [-104.96966991411009, 47.53033008588991], [-104.75, 47.0], [-104.875, 46.69822330470336], [-104.46966991411009, 46.53033008588991], [-104.25, 46.0], [-104.35355339059328, 45.75], [-104.25, 45.5], [-104.35355339059328, 45.25], [-104.32322330470336, 45.17677669529663], [-103.96966991411011, 45.03033008588991], [-103.75, 44.5], [-103.85355339059328, 44.25], [-103.82322330470339, 44.17677669529664], [-103.46966991411011, 44.03033008588991], [-103.32322330470339, 43.67677669529664], [-103.25, 43.64644660940672], [-103.0, 43.75], [-102.46966991411011, 43.53033008588991], [-102.25, 43.0], [-102.46966991411011, 42.46966991411009], [-103.0, 42.25], [-103.25, 42.35355339059328], [-103.5, 42.25], [-103.75, 42.35355339059328], [-104.0, 42.25], [-104.25, 42.35355339059328], [-104.5, 42.25], [-104.75, 42.35355339059328], [-105.0, 42.25], [-105.53033008588991, 42.46966991411009], [-105.67677669529664, 42.82322330470336], [-105.75, 42.85355339059328], [-106.0, 42.75], [-106.25, 42.85355339059328], [-106.5, 42.75], [-106.75, 42.85355339059328], [-107.0, 42.75], [-107.25, 42.85355339059328], [-107.32322330470336, 42.82322330470336], [-107.46966991411009, 42.46966991411009], [-108.0, 42.25], [-108.53033008588991, 42.46966991411009], [-108.75, 43.0], [-108.64644660940672, 43.25], [-108.67677669529664, 43.32322330470336], [-109.03033008588991, 43.46966991411009], [-109.25, 44.0], [-109.14644660940672, 44.25], [-109.25, 44.5], [-109.14644660940672, 44.75], [-109.17677669529664, 44.82322330470336], [-109.53033008588991, 44.96966991411009], [-109.67677669529664, 45.32322330470336]]]}, "2020-06-14T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-109.67677669529664, 45.32322330470336], [-110.03033008588991, 45.46966991411009], [-110.25, 46.0], [-110.03033008588991, 46.53033008588991], [-109.5, 46.75], [-109.25, 46.64644660940672], [-109.0, 46.75], [-108.75, 46.64644660940672], [-108.5, 46.75], [-108.25, 46.64644660940672], [-108.17677669529664, 46.67677669529664], [-108.03033008588991, 47.03033008588991], [-107.67677669529664, 47.17677669529664], [-107.53033008588991, 47.53033008588991], [-107.0, 47.75], [-106.75, 47.64644660940672], [-106.67677669529664, 47.67677669529664], [-106.53033008588991, 48.03033008588991], [-106.0, 48.25], [-105.46966991411009, 48.03033008588991], [-105.32322330470336, 47.67677669529664], [-104.96966991411009, 47.53033008588991], [-104.75, 47.0], [-104.875, 46.69822330470336], [-104.46966991411009, 46.53033008588991], [-104.25, 46.0], [-104.35355339059328, 45.75], [-104.25, 45.5], [-104.35355339059328, 45.25], [-104.32322330470336, 45.17677669529663], [-103.96966991411011, 45.03033008588991], [-103.75, 44.5], [-103.85355339059328, 44.25], [-103.82322330470339, 44.17677669529664], [-103.46966991411011, 44.03033008588991], [-103.32322330470339, 43.67677669529664], [-103.25, 43.64644660940672], [-103.0, 43.75], [-102.46966991411011, 43.53033008588991], [-102.25, 43.0], [-102.46966991411011, 42.46966991411009], [-103.0, 42.25], [-103.25, 42.35355339059328], [-103.5, 42.25], [-103.75, 42.35355339059328], [-104.0, 42.25], [-104.25, 42.35355339059328], [-104.5, 42.25], [-104.75, 42.35355339059328], [-105.0, 42.25], [-105.53033008588991, 42.46966991411009], [-105.67677669529664, 42.82322330470336], [-105.75, 42.85355339059328], [-106.0, 42.75], [-106.25, 42.85355339059328], [-106.5, 42.75], [-106.75, 42.85355339059328], [-107.0, 42.75], [-107.25, 42.85355339059328], [-107.32322330470336, 42.82322330470336], [-107.46966991411009, 42.46966991411009], [-108.0, 42.25], [-108.53033008588991, 42.46966991411009], [-108.75, 43.0], [-108.64644660940672, 43.25], [-108.67677669529664, 43.32322330470336], [-109.03033008588991, 43.46966991411009], [-109.25, 44.0], [-109.14644660940672, 44.25], [-109.25, 44.5], [-109.14644660940672, 44.75], [-109.17677669529664, 44.82322330470336], [-109.53033008588991, 44.96966991411009], [-109.67677669529664, 45.32322330470336]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 11.819543489379612}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.433851968544681}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.678191552874296, 26.876232865155885, 23.727670085494708]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.339333752759387, 29.917452982719112, 27.30344876035906]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.781056787664468, 9.8878756531131, 6.632623464856451]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.8260703865357755, 11.819543489379612, 9.185472162707356]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5772282226651448, 2.783950732830437, 1.8396580343090057]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.206144762293217, 3.3895658247594955, 2.475149417054884]}}