{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:29.041063", "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": "2010-Dec-29_to_2011-Jan-04_200.5_22.5"}, "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": 2010120002739}, "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": "December 29 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 04 2011"}, "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": 94924.17239859876}, "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": 22.5}, "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": 200.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "200.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 198.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 201.75}, "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": {"2010-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-162.15, 20.25], [-162.25, 20.5], [-162.15, 20.75], [-162.25, 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[-161.0, 23.25], [-160.75, 23.15], [-160.68, 23.18], [-160.53, 23.53], [-160.0, 23.75], [-159.75, 23.65], [-159.5, 23.75], [-159.25, 23.65], [-159.0, 23.75], [-158.47, 23.53], [-158.25, 23.0], [-158.35, 22.75], [-158.32, 22.68], [-157.97, 22.53], [-157.75, 22.0], [-157.96, 21.5], [-157.75, 21.0], [-157.97, 20.47], [-158.5, 20.25], [-158.75, 20.35], [-159.0, 20.25], [-159.25, 20.35], [-159.5, 20.25], [-159.75, 20.35], [-159.82, 20.32], [-159.97, 19.97], [-160.32, 19.82], [-160.35, 19.75], [-160.25, 19.5], [-160.47, 18.97], [-161.0, 18.75], [-161.25, 18.85], [-161.5, 18.75], [-162.03, 18.97], [-162.25, 19.5], [-162.15, 19.75], [-162.25, 20.0], [-162.15, 20.25]]]]}, "2010-12-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-162.15, 20.25], [-162.25, 20.5], [-162.15, 20.75], [-162.25, 21.0], [-162.03, 21.53], [-161.68, 21.68], [-161.54, 22.0], [-161.75, 22.5], [-161.53, 23.03], [-161.0, 23.25], [-160.75, 23.15], [-160.68, 23.18], [-160.53, 23.53], [-160.0, 23.75], [-159.75, 23.65], [-159.5, 23.75], [-159.25, 23.65], [-159.0, 23.75], [-158.47, 23.53], [-158.25, 23.0], [-158.35, 22.75], [-158.32, 22.68], [-157.97, 22.53], [-157.75, 22.0], [-157.96, 21.5], [-157.75, 21.0], [-157.97, 20.47], [-158.5, 20.25], [-158.75, 20.35], [-159.0, 20.25], [-159.25, 20.35], [-159.5, 20.25], [-159.75, 20.35], [-159.82, 20.32], [-159.97, 19.97], [-160.32, 19.82], [-160.35, 19.75], [-160.25, 19.5], [-160.47, 18.97], [-161.0, 18.75], [-161.25, 18.85], [-161.5, 18.75], [-162.03, 18.97], [-162.25, 19.5], [-162.15, 19.75], [-162.25, 20.0], [-162.15, 20.25]]]]}, "2011-01-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-160.53, 23.53], [-160.0, 23.75], [-159.75, 23.65], [-159.5, 23.75], [-158.97, 23.53], [-158.82, 23.18], [-158.47, 23.03], [-158.25, 22.5], [-158.35, 22.25], [-158.32, 22.18], [-157.97, 22.03], [-157.75, 21.5], [-157.97, 20.97], [-158.5, 20.75], [-158.75, 20.85], [-159.0, 20.75], [-159.53, 20.97], [-159.75, 21.5], [-159.65, 21.75], 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anomaly over entire duration", "value": 1.29686419828815}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.771300460143323, 24.756339380946542, 24.444939569572796, 24.17604081354972, 23.99362406966185, 24.058769022210015, 23.768324027546726]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.229183606251695, 25.178255685207887, 24.96695184393741, 24.398232483594256, 24.40883731777717, 24.444934541822988, 24.140793335832655]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.2899497220447969, 1.3631562676417037, 1.1363871539031758, 1.3268078400824734, 1.3384866267232838, 1.4721400434016743, 1.3875580882477507]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.8439060376473435, 1.7045088767825973, 1.3857147569829067, 1.4637802790418277, 1.5879482911302603, 1.606581856697062, 1.52862689941486]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6003916644896985, 1.5925036068939986, 1.2980374722593793, 1.3931599307954596, 1.4111879279388082, 1.5019690335562745, 1.3454247628084608]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.0309614840394787, 1.869300885806791, 1.4848321680866203, 1.5512736256970139, 1.6229928673394811, 1.594476034081254, 1.4192263494757853]}}