{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:18:36.850999", "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-Sep-26_to_2020-Oct-01_154.5_46.5"}, "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": 2020090002578}, "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": "September 26 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 01 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 57306.73821885441}, "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": ["Russian Federation"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "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": ["Pacific Ocean", "Vityaz Ridge"]}, "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": 46.5}, "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": 154.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "154.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 152.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 156.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 45.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 48.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[151.854, 46.25], [151.75, 46.5], [151.854, 46.75], [151.75, 47.0], [151.97, 47.53], [152.5, 47.75], [152.75, 47.646], [153.0, 47.75], [153.25, 47.646], [153.251, 47.646], [153.5, 47.75], [153.749, 47.646], [153.75, 47.646], [153.823, 47.677], [153.854, 47.75], [153.854, 47.751], [153.75, 48.0], [153.97, 48.53], [154.5, 48.75], [154.75, 48.646], [155.0, 48.75], [155.53, 48.53], [155.677, 48.177], [155.75, 48.146], [156.0, 48.25], [156.53, 48.03], [156.75, 47.5], [156.53, 46.97], [156.177, 46.823], [156.03, 46.47], [155.677, 46.323], [155.53, 45.97], [155.177, 45.823], [155.03, 45.47], [154.5, 45.25], [154.25, 45.354], [154.0, 45.25], [153.698, 45.375], [153.646, 45.25], [153.75, 45.0], [153.53, 44.47], [153.0, 44.25], [152.75, 44.354], [152.5, 44.25], [151.97, 44.47], [151.75, 45.0], [151.854, 45.25], [151.75, 45.5], [151.854, 45.75], [151.75, 46.0], [151.854, 46.25]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Russian-Far-East", "E.Asia", "N.Pacific-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-09-26T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[151.75, 46.0], [151.96966991411009, 46.53033008588991], [152.5, 46.75], [153.03033008588991, 46.53033008588991], [153.25, 46.0], [153.03033008588991, 45.46966991411009], [152.5, 45.25], [151.96966991411009, 45.46966991411009], [151.75, 46.0]]]}, "2020-09-27T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[151.85355339059328, 45.25], [151.75, 45.5], [151.85355339059328, 45.75], [151.75, 46.0], [151.85355339059328, 46.25], [151.75, 46.5], [151.85355339059328, 46.75], [151.75, 47.0], [151.96966991411009, 47.53033008588991], [152.5, 47.75], [152.75, 47.64644660940672], [153.0, 47.75], [153.25, 47.64644660940672], [153.5, 47.75], [153.75, 47.64644660940672], [153.82322330470336, 47.67677669529664], [153.85355339059328, 47.75], [153.75, 48.0], [153.96966991411009, 48.53033008588991], [154.5, 48.75], [154.75, 48.64644660940672], [155.0, 48.75], [155.53033008588991, 48.53033008588991], [155.67677669529664, 48.17677669529664], [155.75, 48.14644660940672], [156.0, 48.25], [156.53033008588991, 48.03033008588991], [156.75, 47.5], [156.53033008588991, 46.96966991411009], [156.17677669529664, 46.82322330470336], [156.03033008588991, 46.46966991411009], [155.67677669529664, 46.32322330470336], [155.53033008588991, 45.96966991411009], [155.17677669529664, 45.82322330470336], [155.03033008588991, 45.46966991411009], [154.5, 45.25], [154.25, 45.35355339059328], [154.0, 45.25], [153.69822330470336, 45.375], [153.64644660940672, 45.25], [153.75, 45.0], [153.53033008588991, 44.46966991411009], [153.0, 44.25], [152.75, 44.35355339059328], [152.5, 44.25], [151.96966991411009, 44.46966991411009], [151.75, 45.0], [151.85355339059328, 45.25]]]}, "2020-09-28T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[151.85355339059328, 45.25], [151.75, 45.5], [151.85355339059328, 45.75], [151.75, 46.0], [151.85355339059328, 46.25], [151.75, 46.5], [151.85355339059328, 46.75], [151.75, 47.0], [151.96966991411009, 47.53033008588991], [152.5, 47.75], [152.75, 47.64644660940672], [153.0, 47.75], [153.25, 47.64644660940672], [153.5, 47.75], [153.75, 47.64644660940672], [153.82322330470336, 47.67677669529664], [153.85355339059328, 47.75], [153.75, 48.0], [153.96966991411009, 48.53033008588991], [154.5, 48.75], [154.75, 48.64644660940672], [155.0, 48.75], [155.53033008588991, 48.53033008588991], [155.67677669529664, 48.17677669529664], [155.75, 48.14644660940672], [156.0, 48.25], [156.53033008588991, 48.03033008588991], [156.75, 47.5], [156.53033008588991, 46.96966991411009], [156.17677669529664, 46.82322330470336], [156.03033008588991, 46.46966991411009], [155.67677669529664, 46.32322330470336], [155.53033008588991, 45.96966991411009], [155.17677669529664, 45.82322330470336], [155.03033008588991, 45.46966991411009], [154.5, 45.25], [154.25, 45.35355339059328], [154.0, 45.25], [153.69822330470336, 45.375], [153.64644660940672, 45.25], [153.75, 45.0], [153.53033008588991, 44.46966991411009], [153.0, 44.25], [152.75, 44.35355339059328], [152.5, 44.25], [151.96966991411009, 44.46966991411009], [151.75, 45.0], [151.85355339059328, 45.25]]]}, "2020-09-29T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[151.85355339059328, 45.25], [151.75, 45.5], [151.85355339059328, 45.75], [151.75, 46.0], [151.85355339059328, 46.25], [151.75, 46.5], [151.85355339059328, 46.75], [151.75, 47.0], [151.96966991411009, 47.53033008588991], [152.5, 47.75], [152.75, 47.64644660940672], [153.0, 47.75], [153.25, 47.64644660940672], [153.5, 47.75], [153.75, 47.64644660940672], [153.82322330470336, 47.67677669529664], [153.85355339059328, 47.75], [153.75, 48.0], [153.96966991411009, 48.53033008588991], [154.5, 48.75], [154.75, 48.64644660940672], [155.0, 48.75], [155.53033008588991, 48.53033008588991], [155.67677669529664, 48.17677669529664], [155.75, 48.14644660940672], [156.0, 48.25], [156.53033008588991, 48.03033008588991], [156.75, 47.5], [156.53033008588991, 46.96966991411009], [156.17677669529664, 46.82322330470336], [156.03033008588991, 46.46966991411009], [155.67677669529664, 46.32322330470336], [155.53033008588991, 45.96966991411009], [155.17677669529664, 45.82322330470336], [155.03033008588991, 45.46966991411009], [154.5, 45.25], [154.25, 45.35355339059328], [154.0, 45.25], [153.69822330470336, 45.375], [153.64644660940672, 45.25], [153.75, 45.0], [153.53033008588991, 44.46966991411009], [153.0, 44.25], [152.75, 44.35355339059328], [152.5, 44.25], [151.96966991411009, 44.46966991411009], [151.75, 45.0], [151.85355339059328, 45.25]]]}, "2020-09-30T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[151.85355339059328, 45.25], [151.75, 45.5], [151.85355339059328, 45.75], [151.75, 46.0], [151.85355339059328, 46.25], [151.75, 46.5], [151.96966991411009, 47.03033008588991], [152.32322330470336, 47.17677669529664], [152.46966991411009, 47.53033008588991], [153.0, 47.75], [153.5, 47.542893218813454], [153.82322330470336, 47.67677669529664], [153.85355339059328, 47.75], [153.75, 48.0], [153.96966991411009, 48.53033008588991], [154.5, 48.75], [154.75, 48.64644660940672], [155.0, 48.75], [155.53033008588991, 48.53033008588991], [155.67677669529664, 48.17677669529664], [155.75, 48.14644660940672], [156.0, 48.25], [156.53033008588991, 48.03033008588991], [156.75, 47.5], [156.53033008588991, 46.96966991411009], [156.17677669529664, 46.82322330470336], [156.03033008588991, 46.46966991411009], [155.67677669529664, 46.32322330470336], [155.53033008588991, 45.96966991411009], [155.17677669529664, 45.82322330470336], [155.03033008588991, 45.46966991411009], [154.5, 45.25], [154.25, 45.35355339059328], [154.0, 45.25], [153.57322330470336, 45.42677669529664], [153.75, 45.0], [153.53033008588991, 44.46966991411009], [153.0, 44.25], [152.75, 44.35355339059328], [152.5, 44.25], [151.96966991411009, 44.46966991411009], [151.75, 45.0], [151.85355339059328, 45.25]]]}, "2020-10-01T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[151.85355339059328, 45.25], [151.75, 45.5], [151.85355339059328, 45.75], [151.75, 46.0], [151.96966991411009, 46.53033008588991], [152.32322330470336, 46.67677669529664], [152.46966991411009, 47.03033008588991], [153.0, 47.25], [153.25, 47.14644660940672], [153.32322330470336, 47.17677669529664], [153.46966991411009, 47.53033008588991], [153.82322330470336, 47.67677669529664], [153.96966991411009, 48.03033008588991], [154.5, 48.25], [154.75, 48.14644660940672], [155.0, 48.25], [155.25, 48.14644660940672], [155.5, 48.25], [155.75, 48.14644660940672], [156.0, 48.25], [156.53033008588991, 48.03033008588991], [156.75, 47.5], [156.53033008588991, 46.96966991411009], [156.17677669529664, 46.82322330470336], [156.03033008588991, 46.46966991411009], [155.67677669529664, 46.32322330470336], [155.53033008588991, 45.96966991411009], [155.17677669529664, 45.82322330470336], [155.03033008588991, 45.46966991411009], [154.5, 45.25], [154.25, 45.35355339059328], [154.0, 45.25], [153.5, 45.457106781186546], [153.17677669529664, 45.32322330470336], [153.14644660940672, 45.25], [153.25, 45.0], [153.03033008588991, 44.46966991411009], [152.5, 44.25], [151.96966991411009, 44.46966991411009], [151.75, 45.0], [151.85355339059328, 45.25]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.0955813356604835}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.413993563547908}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.506624369182589, 13.652202454976361, 12.536807456262352, 12.17223376697035, 12.458127728053853, 12.319848220639017]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.506624369182589, 15.813945459024694, 13.72640229740523, 13.881751373169436, 13.807832702859855, 13.681942176035989]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.7349781564506088, 3.2653985566954566, 2.2691714585355762, 1.9644763501365767, 2.3315750737726666, 2.1885349290299163]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.7349781564506088, 4.0955813356604835, 2.7272437066824295, 2.3627225815352517, 2.8072180225236707, 2.5545014820862093]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3341757098915787, 2.7398491108292315, 1.9489802871798692, 1.5798745915118588, 1.884488866264799, 1.7167658255488671]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3341757098915787, 3.221623172864874, 2.3381669865093078, 1.816506647105612, 2.4300963791681522, 2.0377244664487435]}}