{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:25:04.347616", "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-Jun-06_to_2021-Jun-10_93.5_62.0"}, "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": 2021060000314}, "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": "June 06 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 10 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 92294.70486194015}, "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": []}, "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": 62.0}, "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": 93.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "93.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 85.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 95.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 60.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 63.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[85.75, 61.146], [85.875, 61.198], [85.75, 61.5], [85.97, 62.03], [86.323, 62.177], [86.47, 62.53], [87.0, 62.75], [87.25, 62.646], [87.323, 62.677], [87.47, 63.03], [88.0, 63.25], [88.25, 63.146], [88.323, 63.177], [88.47, 63.53], [89.0, 63.75], [89.25, 63.646], [89.5, 63.75], [89.75, 63.646], [90.0, 63.75], [90.53, 63.53], [90.677, 63.177], [90.75, 63.146], [91.0, 63.25], [91.25, 63.146], [91.5, 63.25], [91.75, 63.146], [92.0, 63.25], [92.25, 63.146], [92.5, 63.25], [93.0, 63.043], [93.323, 63.177], [93.47, 63.53], [94.0, 63.75], [94.25, 63.646], [94.5, 63.75], [94.75, 63.646], [95.0, 63.75], [95.53, 63.53], [95.75, 63.0], [95.53, 62.47], [95.0, 62.25], [94.75, 62.354], [94.677, 62.323], [94.53, 61.97], [94.177, 61.823], [94.03, 61.47], [93.5, 61.25], [93.25, 61.354], [93.177, 61.323], [93.03, 60.97], [92.5, 60.75], [92.25, 60.854], [92.177, 60.823], [92.03, 60.47], [91.5, 60.25], [91.25, 60.354], [91.0, 60.25], [90.75, 60.354], [90.5, 60.25], [90.25, 60.354], [90.0, 60.25], [89.75, 60.354], [89.5, 60.25], [89.25, 60.354], [89.0, 60.25], [88.75, 60.354], [88.726, 60.344], [88.677, 60.323], [88.53, 59.97], [88.0, 59.75], [87.75, 59.854], [87.5, 59.75], [87.25, 59.854], [87.0, 59.75], [86.75, 59.854], [86.677, 59.823], [86.53, 59.47], [86.0, 59.25], [85.75, 59.354], [85.5, 59.25], [85.25, 59.354], [85.0, 59.25], [84.47, 59.47], [84.25, 60.0], [84.47, 60.53], [84.823, 60.677], [84.97, 61.03], [85.5, 61.25], [85.75, 61.146]]]}}, "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": {"2021-06-06T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[90.75, 61.85355339059328], [90.5, 61.75], [89.96966991411009, 61.96966991411009], [89.75, 62.5], [89.96966991411009, 63.03033008588991], [90.5, 63.25], [90.75, 63.14644660940672], [91.0, 63.25], [91.25, 63.14644660940672], [91.5, 63.25], [92.03033008588991, 63.03033008588991], [92.17677669529664, 62.67677669529664], [92.25, 62.64644660940672], [92.5, 62.75], [92.75, 62.64644660940672], [92.82322330470336, 62.67677669529664], [92.96966991411009, 63.03033008588991], [93.32322330470336, 63.17677669529664], [93.46966991411009, 63.53033008588991], [94.0, 63.75], [94.25, 63.64644660940672], [94.5, 63.75], [94.75, 63.64644660940672], [95.0, 63.75], [95.53033008588991, 63.53033008588991], [95.75, 63.0], [95.53033008588991, 62.46966991411009], [95.0, 62.25], [94.75, 62.35355339059328], [94.67677669529664, 62.32322330470336], [94.53033008588991, 61.96966991411009], [94.17677669529664, 61.82322330470336], [94.03033008588991, 61.46966991411009], [93.5, 61.25], [93.25, 61.35355339059328], [93.0, 61.25], [92.75, 61.35355339059328], [92.5, 61.25], [92.25, 61.35355339059328], [92.0, 61.25], [91.46966991411009, 61.46966991411009], [91.32322330470336, 61.82322330470336], [91.25, 61.85355339059328], [91.0, 61.75], [90.75, 61.85355339059328]]]}, "2021-06-07T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[86.32322330470336, 62.17677669529664], [86.46966991411009, 62.53033008588991], [87.0, 62.75], [87.25, 62.64644660940672], [87.32322330470336, 62.67677669529664], [87.46966991411009, 63.03033008588991], [88.0, 63.25], [88.25, 63.14644660940672], [88.32322330470336, 63.17677669529664], [88.46966991411009, 63.53033008588991], [89.0, 63.75], [89.25, 63.64644660940672], [89.5, 63.75], [89.75, 63.64644660940672], [90.0, 63.75], [90.53033008588991, 63.53033008588991], [90.67677669529664, 63.17677669529664], [90.75, 63.14644660940672], [91.0, 63.25], [91.25, 63.14644660940672], [91.5, 63.25], [91.75, 63.14644660940672], [92.0, 63.25], [92.25, 63.14644660940672], [92.5, 63.25], [93.0, 63.042893218813454], [93.32322330470336, 63.17677669529664], [93.46966991411009, 63.53033008588991], [94.0, 63.75], [94.25, 63.64644660940672], [94.5, 63.75], [94.75, 63.64644660940672], [95.0, 63.75], [95.53033008588991, 63.53033008588991], [95.75, 63.0], [95.53033008588991, 62.46966991411009], [95.0, 62.25], [94.75, 62.35355339059328], [94.67677669529664, 62.32322330470336], [94.53033008588991, 61.96966991411009], [94.17677669529664, 61.82322330470336], [94.03033008588991, 61.46966991411009], [93.5, 61.25], [93.25, 61.35355339059328], [93.17677669529664, 61.32322330470336], [93.03033008588991, 60.96966991411009], [92.5, 60.75], [92.25, 60.85355339059328], [92.17677669529664, 60.82322330470336], [92.03033008588991, 60.46966991411009], [91.5, 60.25], [91.25, 60.35355339059328], [91.0, 60.25], [90.75, 60.35355339059328], [90.5, 60.25], [90.25, 60.35355339059328], [90.0, 60.25], [89.46966991411009, 60.46966991411009], [89.30177669529664, 60.875], [89.17677669529664, 60.82322330470336], [89.03033008588991, 60.46966991411009], [88.5, 60.25], [88.25, 60.35355339059328], [88.0, 60.25], [87.75, 60.35355339059328], [87.5, 60.25], [86.96966991411009, 60.46966991411009], [86.82322330470336, 60.82322330470336], [86.75, 60.85355339059328], [86.5, 60.75], [85.96966991411009, 60.96966991411009], [85.75, 61.5], [85.96966991411009, 62.03033008588991], [86.32322330470336, 62.17677669529664]]]}, "2021-06-08T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[84.82322330470336, 60.67677669529664], [84.96966991411009, 61.03033008588991], [85.5, 61.25], [85.75, 61.14644660940672], [85.875, 61.19822330470336], [85.75, 61.5], [85.96966991411009, 62.03033008588991], [86.32322330470336, 62.17677669529664], [86.46966991411009, 62.53033008588991], [87.0, 62.75], [87.25, 62.64644660940672], [87.32322330470336, 62.67677669529664], [87.46966991411009, 63.03033008588991], [88.0, 63.25], [88.25, 63.14644660940672], [88.32322330470336, 63.17677669529664], [88.46966991411009, 63.53033008588991], [89.0, 63.75], [89.25, 63.64644660940672], [89.5, 63.75], [89.75, 63.64644660940672], [90.0, 63.75], [90.53033008588991, 63.53033008588991], [90.67677669529664, 63.17677669529664], [90.75, 63.14644660940672], [91.0, 63.25], [91.25, 63.14644660940672], [91.5, 63.25], [91.75, 63.14644660940672], [92.0, 63.25], [92.25, 63.14644660940672], [92.5, 63.25], [93.0, 63.042893218813454], [93.32322330470336, 63.17677669529664], [93.46966991411009, 63.53033008588991], [94.0, 63.75], [94.25, 63.64644660940672], [94.5, 63.75], [94.75, 63.64644660940672], [95.0, 63.75], [95.53033008588991, 63.53033008588991], [95.75, 63.0], [95.53033008588991, 62.46966991411009], [95.0, 62.25], [94.75, 62.35355339059328], [94.67677669529664, 62.32322330470336], [94.53033008588991, 61.96966991411009], [94.17677669529664, 61.82322330470336], [94.03033008588991, 61.46966991411009], [93.5, 61.25], [93.25, 61.35355339059328], [93.17677669529664, 61.32322330470336], [93.03033008588991, 60.96966991411009], [92.5, 60.75], [92.25, 60.85355339059328], [92.17677669529664, 60.82322330470336], [92.03033008588991, 60.46966991411009], [91.5, 60.25], [91.25, 60.35355339059328], [91.0, 60.25], [90.75, 60.35355339059328], [90.5, 60.25], [90.25, 60.35355339059328], [90.0, 60.25], [89.75, 60.35355339059328], [89.5, 60.25], [89.25, 60.35355339059328], [89.0, 60.25], [88.75, 60.35355339059328], [88.67677669529664, 60.32322330470336], [88.53033008588991, 59.96966991411009], [88.0, 59.75], [87.75, 59.85355339059328], [87.5, 59.75], [87.25, 59.85355339059328], [87.0, 59.75], [86.75, 59.85355339059328], [86.67677669529664, 59.82322330470336], [86.53033008588991, 59.46966991411009], [86.0, 59.25], [85.75, 59.35355339059328], [85.5, 59.25], [85.25, 59.35355339059328], [85.0, 59.25], [84.46966991411009, 59.46966991411009], [84.25, 60.0], [84.46966991411009, 60.53033008588991], [84.82322330470336, 60.67677669529664]]]}, "2021-06-09T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[84.82322330470336, 60.67677669529664], [84.96966991411009, 61.03033008588991], [85.5, 61.25], [85.75, 61.14644660940672], [85.875, 61.19822330470336], [85.75, 61.5], [85.96966991411009, 62.03033008588991], [86.32322330470336, 62.17677669529664], [86.46966991411009, 62.53033008588991], [87.0, 62.75], [87.25, 62.64644660940672], [87.32322330470336, 62.67677669529664], [87.46966991411009, 63.03033008588991], [88.0, 63.25], [88.25, 63.14644660940672], [88.32322330470336, 63.17677669529664], [88.46966991411009, 63.53033008588991], [89.0, 63.75], [89.25, 63.64644660940672], [89.5, 63.75], [89.75, 63.64644660940672], [90.0, 63.75], [90.53033008588991, 63.53033008588991], [90.67677669529664, 63.17677669529664], [90.75, 63.14644660940672], [91.0, 63.25], [91.25, 63.14644660940672], [91.5, 63.25], [91.75, 63.14644660940672], [92.0, 63.25], [92.25, 63.14644660940672], [92.5, 63.25], [93.0, 63.042893218813454], [93.32322330470336, 63.17677669529664], [93.46966991411009, 63.53033008588991], [94.0, 63.75], [94.25, 63.64644660940672], [94.5, 63.75], [94.75, 63.64644660940672], [95.0, 63.75], [95.53033008588991, 63.53033008588991], [95.75, 63.0], [95.53033008588991, 62.46966991411009], [95.0, 62.25], [94.75, 62.35355339059328], [94.67677669529664, 62.32322330470336], [94.53033008588991, 61.96966991411009], [94.17677669529664, 61.82322330470336], [94.03033008588991, 61.46966991411009], [93.5, 61.25], [93.25, 61.35355339059328], [93.17677669529664, 61.32322330470336], [93.03033008588991, 60.96966991411009], [92.5, 60.75], [92.25, 60.85355339059328], [92.17677669529664, 60.82322330470336], [92.03033008588991, 60.46966991411009], [91.5, 60.25], [91.25, 60.35355339059328], [91.0, 60.25], [90.75, 60.35355339059328], [90.5, 60.25], [90.25, 60.35355339059328], [90.0, 60.25], [89.75, 60.35355339059328], [89.5, 60.25], [89.25, 60.35355339059328], [89.0, 60.25], [88.75, 60.35355339059328], [88.67677669529664, 60.32322330470336], [88.53033008588991, 59.96966991411009], [88.0, 59.75], [87.75, 59.85355339059328], [87.5, 59.75], [87.25, 59.85355339059328], [87.0, 59.75], [86.75, 59.85355339059328], [86.67677669529664, 59.82322330470336], [86.53033008588991, 59.46966991411009], [86.0, 59.25], [85.75, 59.35355339059328], [85.5, 59.25], [85.25, 59.35355339059328], [85.0, 59.25], [84.46966991411009, 59.46966991411009], [84.25, 60.0], [84.46966991411009, 60.53033008588991], [84.82322330470336, 60.67677669529664]]]}, "2021-06-10T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[84.82322330470336, 60.67677669529664], [84.96966991411009, 61.03033008588991], [85.5, 61.25], [85.75, 61.14644660940672], [86.0, 61.25], [86.25, 61.14644660940672], [86.5, 61.25], [86.75, 61.14644660940672], [87.0, 61.25], [87.25, 61.14644660940672], [87.32322330470336, 61.17677669529664], [87.35355339059328, 61.25], [87.25, 61.5], [87.46966991411009, 62.03033008588991], [88.0, 62.25], [88.25, 62.14644660940672], [88.32322330470336, 62.17677669529664], [88.46966991411009, 62.53033008588991], [89.0, 62.75], [89.25, 62.64644660940672], [89.32322330470336, 62.67677669529664], [89.46966991411009, 63.03033008588991], [90.0, 63.25], [90.25, 63.14644660940672], [90.5, 63.25], [90.75, 63.14644660940672], [91.0, 63.25], [91.25, 63.14644660940672], [91.5, 63.25], [91.75, 63.14644660940672], [92.0, 63.25], [92.25, 63.14644660940672], [92.5, 63.25], [93.0, 63.042893218813454], [93.32322330470336, 63.17677669529664], [93.46966991411009, 63.53033008588991], [94.0, 63.75], [94.25, 63.64644660940672], [94.5, 63.75], [94.75, 63.64644660940672], [95.0, 63.75], [95.53033008588991, 63.53033008588991], [95.75, 63.0], [95.53033008588991, 62.46966991411009], [95.0, 62.25], [94.75, 62.35355339059328], [94.67677669529664, 62.32322330470336], [94.53033008588991, 61.96966991411009], [94.17677669529664, 61.82322330470336], [94.03033008588991, 61.46966991411009], [93.5, 61.25], [93.25, 61.35355339059328], [93.17677669529664, 61.32322330470336], [93.03033008588991, 60.96966991411009], [92.5, 60.75], [92.25, 60.85355339059328], [92.17677669529664, 60.82322330470336], [92.03033008588991, 60.46966991411009], [91.5, 60.25], [91.25, 60.35355339059328], [91.0, 60.25], [90.75, 60.35355339059328], [90.5, 60.25], [90.25, 60.35355339059328], [90.0, 60.25], [89.75, 60.35355339059328], [89.5, 60.25], [89.25, 60.35355339059328], [89.0, 60.25], [88.75, 60.35355339059328], [88.67677669529664, 60.32322330470336], [88.53033008588991, 59.96966991411009], [88.0, 59.75], [87.75, 59.85355339059328], [87.5, 59.75], [87.25, 59.85355339059328], [87.0, 59.75], [86.75, 59.85355339059328], [86.67677669529664, 59.82322330470336], [86.53033008588991, 59.46966991411009], [86.0, 59.25], [85.75, 59.35355339059328], [85.5, 59.25], [85.25, 59.35355339059328], [85.0, 59.25], [84.46966991411009, 59.46966991411009], [84.25, 60.0], [84.46966991411009, 60.53033008588991], [84.82322330470336, 60.67677669529664]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -11.03499709344112}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.550782953110158}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [3.8444885799700046, 5.280010802077925, 5.321818685961603, 5.984966554785842, 6.751411345636313]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.778952508643613, 2.872109406197694, 2.5358908460229372, 3.662562003232779, 4.775757634381421]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.391621756014985, -7.3626400444515125, -8.022950407071093, -7.650694549180554, -7.03962133966765]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.7425789572070585, -8.114490563579238, -11.03499709344112, -8.589997068022114, -8.004393202345511]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5573501168895287, -1.5514587426414577, -1.6928107830106989, -1.6304623377993954, -1.5296614692405235]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7006315606248517, -1.784141203957251, -2.2388849020801294, -1.8443819239772017, -1.7624389340423534]}}