{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:12:02.596774", "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-Mar-06_to_2020-Mar-08_251.0_37.5"}, "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": 2020030001431}, "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": "March 06 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 08 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": 54090.8087101379}, "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": 37.5}, "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": 251.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "251.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 249.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 253.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 39.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-111.03, 37.53], [-110.5, 37.75], [-110.198, 37.625], [-110.146, 37.75], [-110.25, 38.0], [-110.03, 38.53], [-109.677, 38.677], [-109.646, 38.75], [-109.75, 39.0], [-109.53, 39.53], [-109.0, 39.75], [-108.75, 39.646], [-108.5, 39.75], [-107.97, 39.53], [-107.75, 39.0], [-107.854, 38.75], [-107.75, 38.5], [-107.854, 38.25], [-107.75, 38.0], [-107.854, 37.75], [-107.823, 37.677], [-107.75, 37.646], [-107.677, 37.677], [-107.53, 38.03], [-107.0, 38.25], [-106.47, 38.03], [-106.25, 37.5], [-106.47, 36.97], [-106.823, 36.823], [-106.97, 36.47], [-107.5, 36.25], [-107.75, 36.354], [-108.0, 36.25], [-108.25, 36.354], [-108.5, 36.25], [-108.75, 36.354], [-108.823, 36.323], [-108.854, 36.25], [-108.75, 36.0], [-108.854, 35.75], [-108.75, 35.5], [-108.97, 34.97], [-109.5, 34.75], [-110.03, 34.97], [-110.177, 35.323], [-110.25, 35.354], [-110.5, 35.25], [-111.03, 35.47], [-111.25, 36.0], [-111.043, 36.5], [-111.25, 37.0], [-111.03, 37.53]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-03-06T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-111.04289321881345, 36.5], [-111.25, 37.0], [-111.03033008588991, 37.53033008588991], [-110.5, 37.75], [-110.19822330470336, 37.625], [-110.14644660940672, 37.75], [-110.25, 38.0], [-110.03033008588991, 38.53033008588991], [-109.67677669529664, 38.67677669529664], [-109.64644660940672, 38.75], [-109.75, 39.0], [-109.53033008588991, 39.53033008588991], [-109.0, 39.75], [-108.75, 39.64644660940672], [-108.5, 39.75], [-107.96966991411009, 39.53033008588991], [-107.75, 39.0], [-107.85355339059328, 38.75], [-107.75, 38.5], [-107.85355339059328, 38.25], [-107.75, 38.0], [-107.85355339059328, 37.75], [-107.82322330470336, 37.67677669529664], [-107.75, 37.64644660940672], [-107.67677669529664, 37.67677669529664], [-107.53033008588991, 38.03033008588991], [-107.0, 38.25], [-106.46966991411009, 38.03033008588991], [-106.25, 37.5], 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"value": 7.809464879152131}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.404292111411939}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.844995740180025, 8.76418817740796, 9.632622882520252]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.64698002588301, 12.809093853817615, 13.080347649199894]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.7476682697285435, 5.421556299739641, 6.043651764767632]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.914302580434878, 7.2786555001670195, 7.809464879152131]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3500748454015163, 1.5747796858780467, 1.7844269723671677]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5857466613905997, 1.9334546534950205, 2.0625586761682246]}}