{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:54.229437", "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": "2015-Apr-23_to_2015-Apr-29_204.0_19.5"}, "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": 2015040002402}, "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 23 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 29 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 86540.14568212503}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Pacific-Ocean"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North 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": ["North Pacific Ocean"]}, "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": 19.5}, "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": 204.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "204.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 203.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 209.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 19.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-04-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-157.03, 18.97], [-157.25, 19.5], [-157.03, 20.03], [-156.5, 20.25], [-156.25, 20.15], [-156.18, 20.18], [-156.03, 20.53], [-155.5, 20.75], [-154.97, 20.53], [-154.75, 20.0], [-154.97, 19.47], [-155.32, 19.32], [-155.47, 18.97], [-156.0, 18.75], [-156.25, 18.85], [-156.5, 18.75], [-157.03, 18.97]]]]}, "2015-04-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-157.03, 18.97], [-157.25, 19.5], [-157.03, 20.03], [-156.5, 20.25], [-156.25, 20.15], [-156.18, 20.18], [-156.03, 20.53], [-155.5, 20.75], [-154.97, 20.53], [-154.75, 20.0], [-154.85, 19.75], [-154.75, 19.5], [-154.97, 18.97], [-155.5, 18.75], [-155.75, 18.85], [-156.0, 18.75], [-156.25, 18.85], [-156.5, 18.75], [-157.03, 18.97]]]]}, "2015-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-157.03, 18.97], [-157.25, 19.5], [-157.03, 20.03], [-156.5, 20.25], [-156.25, 20.15], [-156.18, 20.18], [-156.03, 20.53], [-155.5, 20.75], [-154.97, 20.53], [-154.75, 20.0], [-154.85, 19.75], [-154.75, 19.5], [-154.97, 18.97], [-155.5, 18.75], [-155.75, 18.85], [-156.0, 18.75], [-156.25, 18.85], [-156.5, 18.75], [-157.03, 18.97]]]]}, "2015-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-157.03, 18.97], [-157.25, 19.5], [-157.03, 20.03], [-156.5, 20.25], [-156.25, 20.15], [-156.12, 20.2], [-156.25, 20.5], [-156.03, 21.03], [-155.5, 21.25], [-155.0, 21.04], [-154.68, 21.18], [-154.53, 21.53], [-154.0, 21.75], [-153.75, 21.65], [-153.68, 21.68], [-153.53, 22.03], [-153.18, 22.18], [-153.03, 22.53], [-152.68, 22.68], [-152.53, 23.03], [-152.0, 23.25], [-151.75, 23.15], [-151.68, 23.18], [-151.53, 23.53], [-151.0, 23.75], [-150.47, 23.53], [-150.32, 23.18], [-149.97, 23.03], [-149.75, 22.5], [-149.97, 21.97], [-150.32, 21.82], [-150.47, 21.47], [-151.0, 21.25], [-151.25, 21.35], [-151.32, 21.32], [-151.35, 21.25], [-151.25, 21.0], [-151.47, 20.47], [-151.82, 20.32], [-151.97, 19.97], [-152.5, 19.75], [-152.75, 19.85], [-153.0, 19.75], [-153.25, 19.85], [-153.32, 19.82], [-153.47, 19.47], [-154.0, 19.25], [-154.5, 19.46], [-154.82, 19.32], [-154.97, 18.97], [-155.5, 18.75], [-155.75, 18.85], [-156.0, 18.75], [-156.25, 18.85], [-156.5, 18.75], [-157.03, 18.97]]]]}, "2015-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-157.25, 20.0], [-157.03, 20.53], [-156.5, 20.75], [-156.25, 20.65], [-156.18, 20.68], [-156.03, 21.03], [-155.5, 21.25], [-155.0, 21.04], [-154.68, 21.18], [-154.53, 21.53], [-154.0, 21.75], [-153.75, 21.65], [-153.68, 21.68], [-153.53, 22.03], [-153.18, 22.18], [-153.03, 22.53], [-152.68, 22.68], [-152.53, 23.03], [-152.0, 23.25], [-151.75, 23.15], [-151.68, 23.18], [-151.53, 23.53], [-151.0, 23.75], [-150.47, 23.53], [-150.32, 23.18], [-149.97, 23.03], [-149.75, 22.5], [-149.97, 21.97], [-150.32, 21.82], [-150.47, 21.47], [-151.0, 21.25], [-151.25, 21.35], [-151.32, 21.32], [-151.35, 21.25], [-151.25, 21.0], [-151.47, 20.47], [-151.82, 20.32], [-151.97, 19.97], [-152.5, 19.75], [-152.75, 19.85], [-153.0, 19.75], [-153.25, 19.85], [-153.32, 19.82], [-153.47, 19.47], [-154.0, 19.25], [-154.5, 19.46], [-154.82, 19.32], [-154.97, 18.97], [-155.5, 18.75], [-155.75, 18.85], [-156.0, 18.75], [-156.53, 18.97], [-156.68, 19.32], [-157.03, 19.47], [-157.25, 20.0]]]]}, "2015-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-157.25, 20.0], [-157.03, 20.53], [-156.5, 20.75], [-156.25, 20.65], [-156.18, 20.68], [-156.03, 21.03], [-155.5, 21.25], [-155.0, 21.04], [-154.68, 21.18], [-154.53, 21.53], [-154.0, 21.75], [-153.75, 21.65], [-153.68, 21.68], [-153.53, 22.03], [-153.18, 22.18], [-153.03, 22.53], [-152.68, 22.68], [-152.53, 23.03], [-152.0, 23.25], [-151.75, 23.15], [-151.68, 23.18], [-151.53, 23.53], [-151.0, 23.75], [-150.47, 23.53], [-150.32, 23.18], [-149.97, 23.03], [-149.75, 22.5], [-149.97, 21.97], [-150.32, 21.82], [-150.47, 21.47], [-151.0, 21.25], [-151.25, 21.35], [-151.32, 21.32], [-151.35, 21.25], [-151.25, 21.0], [-151.47, 20.47], [-151.82, 20.32], [-151.97, 19.97], [-152.5, 19.75], [-152.75, 19.85], [-153.0, 19.75], [-153.25, 19.85], [-153.32, 19.82], [-153.47, 19.47], [-154.0, 19.25], [-154.5, 19.46], [-155.0, 19.25], [-155.3, 19.38], [-155.47, 18.97], [-156.0, 18.75], [-156.53, 18.97], [-156.68, 19.32], [-157.03, 19.47], [-157.25, 20.0]]]]}, "2015-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-157.03, 19.47], [-157.25, 20.0], [-157.03, 20.53], [-156.5, 20.75], [-156.25, 20.65], [-156.0, 20.75], [-155.47, 20.53], [-155.25, 20.0], [-155.47, 19.47], [-156.0, 19.25], [-156.25, 19.35], [-156.5, 19.25], [-157.03, 19.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.1047495862417236}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.1086821586620041}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.85576363231229, 19.657547673796444, 19.59311395303382, 23.244455769484375, 23.343207454677668, 23.64847532971652, 23.59955773826175]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.48240051155051, 24.352912769464467, 24.340894446097195, 24.322440504410622, 24.442468662943156, 24.62561240354637, 24.369660884608493]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.2661395220693141, 1.402603767567058, 1.323239134560211, 1.0611990964464544, 1.1547957756103042, 1.0316644643415696, 0.8907085199041092]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.9383656328109282, 1.8701293831300063, 1.862930696135038, 1.8863476477902168, 2.1047495862417236, 1.4337085075990217, 0.9743675674047836]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.752347194741039, 1.7219851779180306, 1.6325559455593868, 1.487762621834272, 1.6407815524365525, 1.5415401063168057, 1.3762232097153597]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.096481935104087, 1.9477064051187256, 2.001254916960735, 1.712903121879776, 1.9187791620569001, 2.149502646397259, 1.4415917111076915]}}