{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:51.890184", "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": "2019-Jun-08_to_2019-Jun-23_141.5_53.0"}, "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": 2019060000306}, "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 08 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 23 2019"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 16}, "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": 54596.81037314627}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Russian-Far-East"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": ["Japan Sea", "Sea of Okhotsk"]}, "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": 53.0}, "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": 141.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "141.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 140.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 143.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 48.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 53.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-06-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.5, 53.75], [142.03, 53.53], [142.25, 53.0], [142.03, 52.47], [141.5, 52.25], [140.97, 52.47], [140.75, 53.0], [140.97, 53.53], [141.5, 53.75]]]]}, "2019-06-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.97, 53.53], [141.5, 53.75], [142.03, 53.53], [142.25, 53.0], [142.15, 52.75], [142.25, 52.5], [142.03, 51.97], [141.5, 51.75], [140.97, 51.97], [140.75, 52.5], [140.85, 52.75], [140.75, 53.0], [140.97, 53.53]]]]}, "2019-06-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.97, 53.53], [141.32, 53.68], [141.47, 54.03], [142.0, 54.25], [142.53, 54.03], [142.75, 53.5], [142.65, 53.25], [142.75, 53.0], [142.53, 52.47], [142.18, 52.32], [142.03, 51.97], [141.5, 51.75], [140.97, 51.97], [140.75, 52.5], [140.85, 52.75], [140.75, 53.0], [140.97, 53.53]]]]}, "2019-06-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.97, 53.53], [141.32, 53.68], [141.47, 54.03], [142.0, 54.25], [142.53, 54.03], [142.75, 53.5], [142.65, 53.25], [142.75, 53.0], [142.53, 52.47], [142.18, 52.32], [142.03, 51.97], [141.5, 51.75], [140.97, 51.97], [140.75, 52.5], [140.85, 52.75], [140.75, 53.0], [140.97, 53.53]]]]}, "2019-06-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.97, 53.53], [141.32, 53.68], [141.47, 54.03], [142.0, 54.25], [142.53, 54.03], [142.75, 53.5], [142.65, 53.25], [142.75, 53.0], [142.53, 52.47], [142.18, 52.32], [142.03, 51.97], [141.5, 51.75], [140.97, 51.97], [140.75, 52.5], [140.85, 52.75], [140.75, 53.0], [140.97, 53.53]]]]}, "2019-06-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.97, 53.53], [141.5, 53.75], [142.03, 53.53], [142.25, 53.0], [142.15, 52.75], [142.25, 52.5], [142.03, 51.97], [141.5, 51.75], [140.97, 51.97], [140.75, 52.5], [140.85, 52.75], [140.75, 53.0], [140.97, 53.53]]]]}, "2019-06-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.47, 53.53], [141.0, 53.75], [141.25, 53.65], [141.5, 53.75], [141.75, 53.65], [142.0, 53.75], [142.53, 53.53], [142.75, 53.0], [142.53, 52.47], [142.18, 52.32], [142.15, 52.25], [142.25, 52.0], [142.15, 51.75], [142.25, 51.5], [142.07, 51.07], [142.32, 51.18], [142.47, 51.53], [143.0, 51.75], [143.25, 51.65], [143.5, 51.75], [144.03, 51.53], [144.25, 51.0], [144.15, 50.75], [144.25, 50.5], [144.03, 49.97], [143.68, 49.82], [143.53, 49.47], [143.18, 49.32], [143.15, 49.25], [143.25, 49.0], [143.15, 48.75], [143.25, 48.5], [143.03, 47.97], [142.5, 47.75], [141.97, 47.97], [141.75, 48.5], [141.85, 48.75], [141.75, 49.0], [141.85, 49.25], [141.75, 49.5], [141.85, 49.75], [141.75, 50.0], [141.85, 50.25], [141.75, 50.5], [141.93, 50.93], [141.5, 50.75], [140.97, 50.97], [140.75, 51.5], [140.85, 51.75], [140.82, 51.82], [140.47, 51.97], [140.25, 52.5], [140.35, 52.75], [140.25, 53.0], [140.47, 53.53]]]]}, "2019-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.47, 53.53], [141.0, 53.75], [141.25, 53.65], [141.5, 53.75], [141.75, 53.65], [142.0, 53.75], [142.53, 53.53], [142.75, 53.0], [142.53, 52.47], [142.18, 52.32], [142.15, 52.25], [142.25, 52.0], [142.15, 51.75], [142.25, 51.5], [142.07, 51.07], [142.32, 51.18], [142.47, 51.53], [143.0, 51.75], [143.25, 51.65], [143.5, 51.75], [144.03, 51.53], [144.25, 51.0], [144.15, 50.75], [144.25, 50.5], [144.03, 49.97], [143.68, 49.82], [143.53, 49.47], [143.18, 49.32], [143.15, 49.25], [143.25, 49.0], [143.15, 48.75], [143.25, 48.5], [143.03, 47.97], [142.5, 47.75], [142.25, 47.85], [142.0, 47.75], [141.47, 47.97], [141.25, 48.5], [141.46, 49.0], [141.25, 49.5], [141.47, 50.03], [141.82, 50.18], [141.85, 50.25], [141.75, 50.5], [141.93, 50.93], [141.5, 50.75], [140.97, 50.97], [140.75, 51.5], [140.85, 51.75], [140.82, 51.82], [140.47, 51.97], [140.25, 52.5], [140.35, 52.75], [140.25, 53.0], [140.47, 53.53]]]]}, "2019-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.47, 53.53], [141.0, 53.75], [141.25, 53.65], [141.5, 53.75], [141.75, 53.65], [142.0, 53.75], [142.53, 53.53], [142.75, 53.0], [142.53, 52.47], [142.18, 52.32], [142.15, 52.25], [142.25, 52.0], [142.15, 51.75], [142.25, 51.5], [142.07, 51.07], [142.32, 51.18], [142.47, 51.53], [143.0, 51.75], [143.25, 51.65], [143.5, 51.75], [144.03, 51.53], [144.25, 51.0], [144.15, 50.75], [144.25, 50.5], [144.03, 49.97], [143.68, 49.82], [143.53, 49.47], [143.18, 49.32], [143.15, 49.25], [143.25, 49.0], [143.15, 48.75], [143.25, 48.5], [143.03, 47.97], [142.5, 47.75], [142.25, 47.85], [142.0, 47.75], [141.47, 47.97], [141.25, 48.5], [141.46, 49.0], [141.25, 49.5], [141.47, 50.03], [141.82, 50.18], [141.85, 50.25], [141.75, 50.5], [141.93, 50.93], [141.5, 50.75], [140.97, 50.97], [140.75, 51.5], [140.85, 51.75], [140.82, 51.82], [140.47, 51.97], [140.25, 52.5], [140.35, 52.75], [140.25, 53.0], [140.47, 53.53]]]]}, "2019-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.25, 49.5], [140.47, 50.03], [141.0, 50.25], [141.25, 50.15], [141.38, 50.2], [141.25, 50.5], [141.35, 50.75], [141.25, 51.0], [141.47, 51.53], [141.88, 51.7], [141.82, 51.82], [141.75, 51.85], [141.5, 51.75], [141.25, 51.85], [141.0, 51.75], [140.47, 51.97], [140.25, 52.5], [140.47, 53.03], [140.82, 53.18], [140.97, 53.53], [141.5, 53.75], [141.75, 53.65], [142.0, 53.75], [142.53, 53.53], [142.75, 53.0], [142.65, 52.75], [142.68, 52.68], [143.03, 52.53], [143.25, 52.0], [143.13, 51.7], [143.25, 51.65], [143.5, 51.75], [144.03, 51.53], [144.25, 51.0], [144.15, 50.75], [144.25, 50.5], [144.03, 49.97], [143.68, 49.82], [143.53, 49.47], [143.18, 49.32], [143.15, 49.25], [143.25, 49.0], [143.03, 48.47], [142.68, 48.32], [142.53, 47.97], [142.0, 47.75], [141.47, 47.97], [141.32, 48.32], [140.97, 48.47], [140.82, 48.82], [140.47, 48.97], [140.25, 49.5]]]]}, "2019-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.25, 49.5], [140.47, 50.03], [141.0, 50.25], [141.25, 50.15], [141.38, 50.2], [141.25, 50.5], [141.35, 50.75], [141.25, 51.0], [141.47, 51.53], [141.88, 51.7], [141.82, 51.82], [141.75, 51.85], [141.5, 51.75], [141.25, 51.85], [141.0, 51.75], [140.47, 51.97], [140.25, 52.5], [140.47, 53.03], [140.82, 53.18], [140.97, 53.53], [141.5, 53.75], [141.75, 53.65], [142.0, 53.75], [142.53, 53.53], [142.75, 53.0], [142.65, 52.75], [142.68, 52.68], [143.03, 52.53], [143.25, 52.0], [143.13, 51.7], [143.53, 51.53], [143.75, 51.0], [143.65, 50.75], [143.75, 50.5], [143.65, 50.25], [143.75, 50.0], [143.53, 49.47], [143.18, 49.32], [143.03, 48.97], [142.5, 48.75], [142.25, 48.85], [142.18, 48.82], [142.03, 48.47], [141.5, 48.25], [140.97, 48.47], [140.82, 48.82], [140.47, 48.97], [140.25, 49.5]]]]}, "2019-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.25, 49.5], [140.47, 50.03], [141.0, 50.25], [141.25, 50.15], [141.38, 50.2], [141.25, 50.5], [141.35, 50.75], [141.25, 51.0], [141.47, 51.53], [141.88, 51.7], [141.82, 51.82], [141.75, 51.85], [141.5, 51.75], [140.97, 51.97], [140.75, 52.5], [140.85, 52.75], [140.75, 53.0], [140.97, 53.53], [141.5, 53.75], [141.75, 53.65], [142.0, 53.75], [142.53, 53.53], [142.75, 53.0], [142.65, 52.75], [142.68, 52.68], [143.03, 52.53], [143.25, 52.0], [143.04, 51.5], [143.25, 51.0], [143.15, 50.75], [143.25, 50.5], [143.03, 49.97], [142.5, 49.75], [142.25, 49.85], [142.13, 49.8], [142.25, 49.5], [142.15, 49.25], [142.25, 49.0], [142.03, 48.47], [141.5, 48.25], [140.97, 48.47], [140.82, 48.82], [140.47, 48.97], [140.25, 49.5]]]]}, "2019-06-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.97, 48.47], [140.75, 49.0], [140.97, 49.53], [141.5, 49.75], [142.03, 49.53], [142.25, 49.0], [142.03, 48.47], [141.5, 48.25], [140.97, 48.47]]], [[[141.5, 53.75], [141.75, 53.65], [142.0, 53.75], [142.53, 53.53], [142.75, 53.0], [142.63, 52.7], [143.03, 52.53], [143.25, 52.0], [143.03, 51.47], [142.5, 51.25], [141.97, 51.47], [141.8, 51.88], [141.5, 51.75], [140.97, 51.97], [140.75, 52.5], [140.85, 52.75], [140.75, 53.0], [140.97, 53.53], [141.5, 53.75]]]]}, "2019-06-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.5, 53.75], [142.03, 53.53], [142.25, 53.0], [142.03, 52.47], [141.5, 52.25], [140.97, 52.47], [140.75, 53.0], [140.97, 53.53], [141.5, 53.75]]]]}, "2019-06-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.5, 53.75], [142.03, 53.53], [142.25, 53.0], [142.03, 52.47], [141.5, 52.25], [140.97, 52.47], [140.75, 53.0], [140.97, 53.53], [141.5, 53.75]]]]}, "2019-06-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.5, 53.75], [142.03, 53.53], [142.25, 53.0], [142.03, 52.47], [141.5, 52.25], [140.97, 52.47], [140.75, 53.0], [140.97, 53.53], [141.5, 53.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.638378471526551}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.42063363321227}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [3.618594408101387, 2.791978052385616, 4.142495948600072, 3.616808969921067, 4.089867044095854, 3.76512490435033, 4.724838226913789, 4.665385667951114, 5.972514356878946, 6.004087851449583, 6.20702521506837, 6.985743968190263, 5.851355439806412, 3.8610818260933115, 5.387008643079412, 5.950542759001507]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.618594408101387, 2.4890348671684137, 2.952999663168498, 2.296041456410535, 2.6657517252118055, 3.4632197645868814, 2.991033648593259, 2.17247252559838, 2.4395408599345387, 3.3273603756024386, 3.1023951648696197, 3.664268408065709, 3.3689652373880676, 3.8610818260933115, 5.387008643079412, 5.950542759001507]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.2324209354322875, -4.628741236106805, -3.7694563599899027, -4.399846536504839, -4.021612134378913, -3.981315176966149, -5.246700265183693, -5.336068247458211, -4.165692955848598, -4.341577598121922, -4.370245522271447, -3.3451909121064602, -4.032113184359912, -4.449121741388808, -3.0891263217587834, -2.6892909842326844]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.2324209354322875, -4.767805969792562, -4.910827293908596, -5.752286553100419, -4.955305114928308, -4.070963655864375, -6.898199794955758, -7.351739976282374, -5.569301176470162, -7.638378471526551, -6.5589196998070065, -5.0312385252488525, -4.783329437544353, -4.449121741388808, -3.0891263217587834, -2.6892909842326844]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6851296786123184, -2.230676304925934, -1.8143206118483368, -2.093006578369679, -1.8542456194434243, -1.8963575721968757, -1.8438165534832591, -2.0815888712751525, -1.6063411007467538, -1.7791961263011933, -1.891916368568917, -1.6505249976942917, -1.8080688634836293, -2.0133170641951024, -1.4083036158227968, -1.2216386018876344]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6851296786123184, -2.398152899763811, -2.2829111911499154, -2.60952592170489, -2.4080510974812186, -1.9939385449684819, -2.2598723224690715, -3.081672223889589, -2.4214178545115153, -2.2003770321641327, -2.390632515574691, -2.009868467263189, -2.1498425492872597, -2.0133170641951024, -1.4083036158227968, -1.2216386018876344]}}