{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:21:58.997645", "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-Jan-11_to_2021-Jan-13_92.0_47.5"}, "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": 2021010001858}, "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": "January 11 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 13 2021"}, "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": 85082.85213008293}, "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": ["China", "Mongolia", "Russian Federation"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "Asia", "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": []}, "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": 47.5}, "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": 92.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "92.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 88.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 94.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 46.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 51.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[87.25, 50.5], [87.47, 51.03], [88.0, 51.25], [88.5, 51.043], [88.823, 51.177], [88.97, 51.53], [89.5, 51.75], [89.75, 51.646], [90.0, 51.75], [90.25, 51.646], [90.5, 51.75], [90.75, 51.646], [91.0, 51.75], [91.25, 51.646], [91.323, 51.677], [91.47, 52.03], [92.0, 52.25], [92.53, 52.03], [92.75, 51.5], [92.53, 50.97], [92.177, 50.823], [92.146, 50.75], [92.25, 50.5], [92.146, 50.25], [92.25, 50.0], [92.146, 49.75], [92.177, 49.677], [92.53, 49.53], [92.75, 49.0], [92.625, 48.698], [93.0, 48.543], [93.5, 48.75], [93.75, 48.646], [94.0, 48.75], [94.53, 48.53], [94.75, 48.0], [94.53, 47.47], [94.125, 47.302], [94.25, 47.0], [94.03, 46.47], [93.677, 46.323], [93.53, 45.97], [93.0, 45.75], [92.47, 45.97], [92.323, 46.323], [92.25, 46.354], [92.0, 46.25], [91.5, 46.457], [91.0, 46.25], [90.75, 46.354], [90.5, 46.25], [89.97, 46.47], [89.75, 47.0], [89.854, 47.25], [89.75, 47.5], [89.97, 48.03], [90.323, 48.177], [90.354, 48.25], [90.323, 48.323], [89.97, 48.47], [89.823, 48.823], [89.47, 48.97], [89.323, 49.323], [89.25, 49.354], [89.0, 49.25], [88.75, 49.354], [88.5, 49.25], [87.97, 49.47], [87.823, 49.823], [87.47, 49.97], [87.25, 50.5]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Siberia", "E.Siberia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-01-11T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[87.82322330470336, 49.82322330470336], [87.46966991411009, 49.96966991411009], [87.25, 50.5], [87.46966991411009, 51.03033008588991], [88.0, 51.25], [88.5, 51.042893218813454], [88.82322330470336, 51.17677669529664], [88.96966991411009, 51.53033008588991], [89.5, 51.75], [89.75, 51.64644660940672], [90.0, 51.75], [90.25, 51.64644660940672], [90.5, 51.75], [90.75, 51.64644660940672], [91.0, 51.75], [91.25, 51.64644660940672], [91.32322330470336, 51.67677669529664], [91.46966991411009, 52.03033008588991], [92.0, 52.25], [92.53033008588991, 52.03033008588991], [92.75, 51.5], [92.53033008588991, 50.96966991411009], [92.17677669529664, 50.82322330470336], [92.14644660940672, 50.75], [92.25, 50.5], [92.14644660940672, 50.25], [92.25, 50.0], [92.14644660940672, 49.75], [92.17677669529664, 49.67677669529664], [92.53033008588991, 49.53033008588991], [92.75, 49.0], [92.625, 48.69822330470336], [93.0, 48.542893218813454], [93.5, 48.75], [93.75, 48.64644660940672], [94.0, 48.75], [94.53033008588991, 48.53033008588991], [94.75, 48.0], [94.53033008588991, 47.46966991411009], [94.125, 47.30177669529664], [94.25, 47.0], [94.03033008588991, 46.46966991411009], [93.67677669529664, 46.32322330470336], [93.53033008588991, 45.96966991411009], [93.0, 45.75], [92.46966991411009, 45.96966991411009], [92.32322330470336, 46.32322330470336], [92.25, 46.35355339059328], [92.0, 46.25], [91.5, 46.457106781186546], [91.0, 46.25], [90.75, 46.35355339059328], [90.5, 46.25], [89.96966991411009, 46.46966991411009], [89.75, 47.0], [89.85355339059328, 47.25], [89.75, 47.5], [89.96966991411009, 48.03033008588991], [90.32322330470336, 48.17677669529664], [90.35355339059328, 48.25], [90.32322330470336, 48.32322330470336], [89.96966991411009, 48.46966991411009], [89.82322330470336, 48.82322330470336], [89.46966991411009, 48.96966991411009], [89.32322330470336, 49.32322330470336], [89.25, 49.35355339059328], [89.0, 49.25], [88.75, 49.35355339059328], [88.5, 49.25], [87.96966991411009, 49.46966991411009], [87.82322330470336, 49.82322330470336]]]}, "2021-01-12T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[87.82322330470336, 49.82322330470336], [87.46966991411009, 49.96966991411009], [87.25, 50.5], [87.46966991411009, 51.03033008588991], [88.0, 51.25], [88.5, 51.042893218813454], [88.82322330470336, 51.17677669529664], [88.96966991411009, 51.53033008588991], [89.5, 51.75], [89.75, 51.64644660940672], [90.0, 51.75], [90.25, 51.64644660940672], [90.5, 51.75], [90.75, 51.64644660940672], [91.0, 51.75], [91.25, 51.64644660940672], [91.32322330470336, 51.67677669529664], [91.46966991411009, 52.03033008588991], [92.0, 52.25], [92.53033008588991, 52.03033008588991], [92.75, 51.5], [92.53033008588991, 50.96966991411009], [92.17677669529664, 50.82322330470336], [92.14644660940672, 50.75], [92.25, 50.5], [92.14644660940672, 50.25], [92.25, 50.0], [92.14644660940672, 49.75], [92.17677669529664, 49.67677669529664], [92.53033008588991, 49.53033008588991], [92.75, 49.0], [92.625, 48.69822330470336], [93.0, 48.542893218813454], [93.5, 48.75], [93.75, 48.64644660940672], [94.0, 48.75], [94.53033008588991, 48.53033008588991], [94.75, 48.0], [94.53033008588991, 47.46966991411009], [94.125, 47.30177669529664], [94.25, 47.0], [94.03033008588991, 46.46966991411009], [93.67677669529664, 46.32322330470336], [93.53033008588991, 45.96966991411009], [93.0, 45.75], [92.46966991411009, 45.96966991411009], [92.32322330470336, 46.32322330470336], [92.25, 46.35355339059328], [92.0, 46.25], [91.5, 46.457106781186546], [91.0, 46.25], [90.75, 46.35355339059328], [90.5, 46.25], [89.96966991411009, 46.46966991411009], [89.75, 47.0], [89.85355339059328, 47.25], [89.75, 47.5], [89.96966991411009, 48.03033008588991], [90.32322330470336, 48.17677669529664], [90.35355339059328, 48.25], [90.32322330470336, 48.32322330470336], [89.96966991411009, 48.46966991411009], [89.82322330470336, 48.82322330470336], [89.46966991411009, 48.96966991411009], [89.32322330470336, 49.32322330470336], [89.25, 49.35355339059328], [89.0, 49.25], [88.75, 49.35355339059328], [88.5, 49.25], [87.96966991411009, 49.46966991411009], [87.82322330470336, 49.82322330470336]]]}, "2021-01-13T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[87.82322330470336, 49.82322330470336], [87.46966991411009, 49.96966991411009], [87.25, 50.5], [87.46966991411009, 51.03033008588991], [88.0, 51.25], [88.5, 51.042893218813454], [88.82322330470336, 51.17677669529664], [88.96966991411009, 51.53033008588991], [89.5, 51.75], [89.75, 51.64644660940672], [90.0, 51.75], [90.25, 51.64644660940672], [90.5, 51.75], [90.75, 51.64644660940672], [91.0, 51.75], [91.25, 51.64644660940672], [91.32322330470336, 51.67677669529664], [91.46966991411009, 52.03033008588991], [92.0, 52.25], [92.53033008588991, 52.03033008588991], [92.75, 51.5], [92.53033008588991, 50.96966991411009], [92.17677669529664, 50.82322330470336], [92.14644660940672, 50.75], [92.25, 50.5], [92.14644660940672, 50.25], [92.25, 50.0], [92.14644660940672, 49.75], [92.17677669529664, 49.67677669529664], [92.53033008588991, 49.53033008588991], [92.75, 49.0], [92.625, 48.69822330470336], [93.0, 48.542893218813454], [93.5, 48.75], [93.75, 48.64644660940672], [94.0, 48.75], [94.53033008588991, 48.53033008588991], [94.75, 48.0], [94.53033008588991, 47.46966991411009], [94.125, 47.30177669529664], [94.25, 47.0], [94.03033008588991, 46.46966991411009], [93.67677669529664, 46.32322330470336], [93.53033008588991, 45.96966991411009], [93.0, 45.75], [92.46966991411009, 45.96966991411009], [92.32322330470336, 46.32322330470336], [92.25, 46.35355339059328], [92.0, 46.25], [91.5, 46.457106781186546], [91.0, 46.25], [90.75, 46.35355339059328], [90.5, 46.25], [89.96966991411009, 46.46966991411009], [89.75, 47.0], [89.85355339059328, 47.25], [89.75, 47.5], [89.96966991411009, 48.03033008588991], [90.32322330470336, 48.17677669529664], [90.35355339059328, 48.25], [90.32322330470336, 48.32322330470336], [89.96966991411009, 48.46966991411009], [89.82322330470336, 48.82322330470336], [89.46966991411009, 48.96966991411009], [89.32322330470336, 49.32322330470336], [89.25, 49.35355339059328], [89.0, 49.25], [88.75, 49.35355339059328], [88.5, 49.25], [87.96966991411009, 49.46966991411009], [87.82322330470336, 49.82322330470336]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 14.582513635325284}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.786053150228382}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-14.421206917922518, -13.074454382868453, -14.8258660571056]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-8.209798054888267, -3.240047420866347, -7.55535266268447]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.431502776600139, 8.795640578739928, 7.1310160953450765]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [12.993238564296462, 14.582513635325284, 10.792446967505242]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.8745388004802352, 2.22334930427123, 1.782094636882424]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [3.2469132532682385, 3.7540604115257024, 2.665497543111769]}}