{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:26:47.138178", "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": "2021-Jul-24_to_2021-Jul-27_241.0_38.0"}, "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": 2021070002894}, "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 24 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 27 2021"}, "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": 59667.48193697329}, "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": 38.0}, "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": 241.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "241.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 239.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 243.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.5}, "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": "Polygon", "coordinates": [[[-121.53, 40.53], [-121.0, 40.75], [-120.47, 40.53], [-120.323, 40.177], [-119.97, 40.03], [-119.802, 39.625], [-119.5, 39.75], [-119.073, 39.573], [-119.25, 40.0], [-119.043, 40.5], [-119.25, 41.0], [-119.146, 41.25], [-119.25, 41.5], [-119.03, 42.03], [-118.677, 42.177], [-118.53, 42.53], [-118.0, 42.75], [-117.47, 42.53], [-117.25, 42.0], [-117.375, 41.698], [-116.97, 41.53], [-116.75, 41.0], [-116.854, 40.75], [-116.75, 40.5], [-116.854, 40.251], [-116.854, 40.25], [-116.823, 40.177], [-116.47, 40.03], [-116.25, 39.5], [-116.47, 38.97], [-117.0, 38.75], [-117.25, 38.854], [-117.323, 38.823], [-117.354, 38.75], [-117.25, 38.5], [-117.47, 37.97], [-117.823, 37.823], [-117.97, 37.47], [-118.323, 37.323], [-118.47, 36.97], [-119.0, 36.75], [-119.53, 36.97], [-119.677, 37.323], [-120.03, 37.47], [-120.177, 37.823], [-120.53, 37.97], [-120.677, 38.323], [-121.03, 38.47], [-121.25, 39.0], [-121.146, 39.25], [-121.177, 39.323], [-121.53, 39.47], [-121.75, 40.0], [-121.53, 40.53]], [[-118.75, 39.146], [-118.677, 39.177], [-118.646, 39.25], [-118.677, 39.323], [-118.927, 39.427], [-118.823, 39.177], [-118.75, 39.146]]]}}, "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": {"2021-07-24T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-121.17677669529664, 39.32322330470336], [-121.53033008588991, 39.46966991411009], [-121.75, 40.0], [-121.53033008588991, 40.53033008588991], [-121.0, 40.75], [-120.46966991411009, 40.53033008588991], [-120.32322330470336, 40.17677669529664], [-119.96966991411009, 40.03033008588991], [-119.80177669529664, 39.625], [-119.5, 39.75], [-118.96966991411009, 39.53033008588991], [-118.82322330470336, 39.17677669529664], [-118.75, 39.14644660940672], [-118.67677669529664, 39.17677669529664], [-118.64644660940672, 39.25], [-118.75, 39.5], [-118.53033008588991, 40.03033008588991], [-118.17677669529664, 40.17677669529664], [-118.03033008588991, 40.53033008588991], [-117.5, 40.75], [-116.96966991411009, 40.53033008588991], [-116.82322330470336, 40.17677669529664], [-116.46966991411009, 40.03033008588991], [-116.25, 39.5], [-116.46966991411009, 38.96966991411009], [-117.0, 38.75], [-117.25, 38.85355339059328], [-117.32322330470336, 38.82322330470336], [-117.35355339059328, 38.75], [-117.25, 38.5], [-117.46966991411009, 37.96966991411009], [-117.82322330470336, 37.82322330470336], [-117.96966991411009, 37.46966991411009], [-118.32322330470336, 37.32322330470336], [-118.46966991411009, 36.96966991411009], [-119.0, 36.75], [-119.53033008588991, 36.96966991411009], [-119.67677669529664, 37.32322330470336], [-120.03033008588991, 37.46966991411009], [-120.17677669529664, 37.82322330470336], [-120.53033008588991, 37.96966991411009], [-120.67677669529664, 38.32322330470336], [-121.03033008588991, 38.46966991411009], [-121.25, 39.0], [-121.14644660940672, 39.25], [-121.17677669529664, 39.32322330470336]]]}, "2021-07-25T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-121.17677669529664, 39.32322330470336], [-121.53033008588991, 39.46966991411009], [-121.75, 40.0], [-121.53033008588991, 40.53033008588991], [-121.0, 40.75], [-120.46966991411009, 40.53033008588991], [-120.32322330470336, 40.17677669529664], [-119.96966991411009, 40.03033008588991], [-119.80177669529664, 39.625], [-119.5, 39.75], [-119.07322330470336, 39.57322330470336], [-119.25, 40.0], [-119.04289321881345, 40.5], [-119.25, 41.0], [-119.14644660940672, 41.25], [-119.25, 41.5], [-119.03033008588991, 42.03033008588991], [-118.67677669529664, 42.17677669529664], [-118.53033008588991, 42.53033008588991], [-118.0, 42.75], [-117.46966991411009, 42.53033008588991], [-117.25, 42.0], [-117.375, 41.69822330470336], [-116.96966991411009, 41.53033008588991], [-116.75, 41.0], [-116.85355339059328, 40.75], [-116.75, 40.5], [-116.85355339059328, 40.25], [-116.82322330470336, 40.17677669529664], [-116.46966991411009, 40.03033008588991], [-116.25, 39.5], [-116.46966991411009, 38.96966991411009], [-117.0, 38.75], [-117.25, 38.85355339059328], [-117.32322330470336, 38.82322330470336], [-117.35355339059328, 38.75], [-117.25, 38.5], [-117.46966991411009, 37.96966991411009], [-117.82322330470336, 37.82322330470336], [-117.96966991411009, 37.46966991411009], [-118.32322330470336, 37.32322330470336], [-118.46966991411009, 36.96966991411009], [-119.0, 36.75], [-119.53033008588991, 36.96966991411009], [-119.67677669529664, 37.32322330470336], [-120.03033008588991, 37.46966991411009], [-120.17677669529664, 37.82322330470336], [-120.53033008588991, 37.96966991411009], [-120.67677669529664, 38.32322330470336], [-121.03033008588991, 38.46966991411009], [-121.25, 39.0], [-121.14644660940672, 39.25], [-121.17677669529664, 39.32322330470336]], [[-118.82322330470336, 39.17677669529664], [-118.75, 39.14644660940672], [-118.67677669529664, 39.17677669529664], [-118.64644660940672, 39.25], [-118.67677669529664, 39.32322330470336], [-118.92677669529664, 39.42677669529664], [-118.82322330470336, 39.17677669529664]]]}, "2021-07-26T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-121.17677669529664, 39.32322330470336], [-121.53033008588991, 39.46966991411009], [-121.75, 40.0], [-121.53033008588991, 40.53033008588991], [-121.0, 40.75], [-120.46966991411009, 40.53033008588991], [-120.32322330470336, 40.17677669529664], [-119.96966991411009, 40.03033008588991], [-119.80177669529664, 39.625], [-119.5, 39.75], [-119.07322330470336, 39.57322330470336], [-119.25, 40.0], [-119.04289321881345, 40.5], [-119.25, 41.0], [-119.14644660940672, 41.25], [-119.25, 41.5], [-119.03033008588991, 42.03033008588991], [-118.67677669529664, 42.17677669529664], [-118.53033008588991, 42.53033008588991], [-118.0, 42.75], [-117.46966991411009, 42.53033008588991], [-117.25, 42.0], [-117.375, 41.69822330470336], [-116.96966991411009, 41.53033008588991], [-116.75, 41.0], [-116.85355339059328, 40.75], [-116.75, 40.5], [-116.85355339059328, 40.25], [-116.82322330470336, 40.17677669529664], [-116.46966991411009, 40.03033008588991], [-116.25, 39.5], [-116.46966991411009, 38.96966991411009], [-117.0, 38.75], [-117.25, 38.85355339059328], [-117.32322330470336, 38.82322330470336], [-117.35355339059328, 38.75], [-117.25, 38.5], [-117.46966991411009, 37.96966991411009], [-117.82322330470336, 37.82322330470336], [-117.96966991411009, 37.46966991411009], [-118.32322330470336, 37.32322330470336], [-118.46966991411009, 36.96966991411009], [-119.0, 36.75], [-119.53033008588991, 36.96966991411009], [-119.67677669529664, 37.32322330470336], [-120.03033008588991, 37.46966991411009], [-120.17677669529664, 37.82322330470336], [-120.53033008588991, 37.96966991411009], [-120.67677669529664, 38.32322330470336], [-121.03033008588991, 38.46966991411009], [-121.25, 39.0], [-121.14644660940672, 39.25], [-121.17677669529664, 39.32322330470336]], [[-118.82322330470336, 39.17677669529664], [-118.75, 39.14644660940672], [-118.67677669529664, 39.17677669529664], [-118.64644660940672, 39.25], [-118.67677669529664, 39.32322330470336], [-118.92677669529664, 39.42677669529664], [-118.82322330470336, 39.17677669529664]]]}, "2021-07-27T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-119.14644660940672, 41.25], [-119.25, 41.5], [-119.03033008588991, 42.03033008588991], [-118.67677669529664, 42.17677669529664], [-118.53033008588991, 42.53033008588991], [-118.0, 42.75], [-117.46966991411009, 42.53033008588991], [-117.25, 42.0], [-117.375, 41.69822330470336], [-116.96966991411009, 41.53033008588991], [-116.75, 41.0], [-116.85355339059328, 40.75], [-116.75, 40.5], [-116.96966991411009, 39.96966991411009], [-117.5, 39.75], [-117.80177669529664, 39.875], [-117.96966991411009, 39.46966991411009], [-118.5, 39.25], [-119.03033008588991, 39.46966991411009], [-119.25, 40.0], [-119.04289321881345, 40.5], [-119.25, 41.0], [-119.14644660940672, 41.25]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.98061328413263}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.6673355896445266}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.93176308381669, 27.00193755537947, 27.32993415981656, 29.93767761780174]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [30.327775254912524, 32.948838950514016, 33.058377634980786, 31.51299841519034]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.1562337904748543, 3.7790503542827287, 4.008645664865281, 3.3636515022988402]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.8176773744950196, 4.593767410966677, 4.98061328413263, 3.6522779896480415]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3138735447756134, 1.5782416025790722, 1.7232839507663507, 1.2984764233751203]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5860671653439113, 2.0286138534318146, 2.3130531322751766, 1.4076079950065281]}}