{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:07:26.851986", "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": "2017-Mar-09_to_2017-Mar-13_66.0_42.0"}, "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": 2017030000253}, "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": "March 09 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 13 2017"}, "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": 188317.5659002979}, "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": ["Kazakhstan", "Uzbekistan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.C.Asia"]}, "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": []}, "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": 42.0}, "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": 66.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "66.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 62.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 69.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 39.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[64.25, 42.0], [64.47, 42.53], [64.82, 42.68], [64.97, 43.03], [65.5, 43.25], [65.75, 43.15], [66.0, 43.25], [66.53, 43.03], [66.68, 42.68], [67.03, 42.53], [67.25, 42.0], [67.03, 41.47], [66.5, 41.25], [66.25, 41.35], [66.18, 41.32], [66.03, 40.97], [65.5, 40.75], [64.97, 40.97], [64.82, 41.32], [64.47, 41.47], [64.25, 42.0]]]]}, "2017-03-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[61.85, 41.75], [61.75, 42.0], [61.85, 42.25], [61.75, 42.5], [61.97, 43.03], [62.5, 43.25], [62.75, 43.15], [62.82, 43.18], [62.97, 43.53], [63.32, 43.68], [63.47, 44.03], [64.0, 44.25], [64.25, 44.15], [64.5, 44.25], [64.75, 44.15], [65.0, 44.25], [65.25, 44.15], [65.5, 44.25], [65.75, 44.15], [66.0, 44.25], [66.25, 44.15], [66.5, 44.25], [66.75, 44.15], [67.0, 44.25], [67.25, 44.15], [67.5, 44.25], [67.75, 44.15], [68.0, 44.25], [68.25, 44.15], [68.5, 44.25], [69.03, 44.03], [69.18, 43.68], [69.53, 43.53], [69.75, 43.0], [69.65, 42.75], [69.75, 42.5], [69.53, 41.97], [69.18, 41.82], [69.03, 41.47], [68.68, 41.32], [68.65, 41.25], [68.75, 41.0], [68.53, 40.47], [68.0, 40.25], [67.75, 40.35], [67.5, 40.25], [67.25, 40.35], [67.0, 40.25], [66.75, 40.35], [66.68, 40.32], [66.53, 39.97], [66.18, 39.82], [66.03, 39.47], [65.5, 39.25], [65.25, 39.35], [65.0, 39.25], [64.75, 39.35], [64.5, 39.25], [64.25, 39.35], [64.0, 39.25], [63.47, 39.47], [63.25, 40.0], [63.35, 40.25], [63.32, 40.32], [63.25, 40.35], [63.0, 40.25], [62.75, 40.35], [62.5, 40.25], [61.97, 40.47], [61.75, 41.0], [61.85, 41.25], [61.75, 41.5], [61.85, 41.75]]]]}, "2017-03-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[61.85, 41.75], [61.75, 42.0], [61.85, 42.25], [61.75, 42.5], [61.97, 43.03], [62.5, 43.25], [62.75, 43.15], [62.82, 43.18], [62.97, 43.53], [63.32, 43.68], [63.47, 44.03], [64.0, 44.25], [64.25, 44.15], [64.5, 44.25], [64.75, 44.15], [65.0, 44.25], [65.25, 44.15], [65.5, 44.25], [65.75, 44.15], [66.0, 44.25], [66.25, 44.15], [66.5, 44.25], [66.75, 44.15], [67.0, 44.25], [67.25, 44.15], [67.5, 44.25], [67.75, 44.15], [68.0, 44.25], [68.25, 44.15], [68.5, 44.25], [69.03, 44.03], [69.18, 43.68], [69.53, 43.53], [69.75, 43.0], [69.65, 42.75], [69.75, 42.5], [69.53, 41.97], [69.18, 41.82], [69.03, 41.47], [68.68, 41.32], [68.65, 41.25], [68.75, 41.0], [68.53, 40.47], [68.0, 40.25], [67.75, 40.35], [67.5, 40.25], [67.25, 40.35], [67.0, 40.25], [66.75, 40.35], [66.68, 40.32], [66.53, 39.97], [66.18, 39.82], [66.03, 39.47], [65.5, 39.25], [65.25, 39.35], [65.0, 39.25], [64.75, 39.35], [64.5, 39.25], [64.25, 39.35], [64.0, 39.25], [63.47, 39.47], [63.25, 40.0], [63.35, 40.25], [63.32, 40.32], [63.25, 40.35], [63.0, 40.25], [62.75, 40.35], [62.5, 40.25], [61.97, 40.47], [61.75, 41.0], [61.85, 41.25], [61.75, 41.5], [61.85, 41.75]]]]}, "2017-03-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[61.85, 41.75], [61.75, 42.0], [61.85, 42.25], [61.75, 42.5], [61.97, 43.03], [62.5, 43.25], [62.75, 43.15], [62.82, 43.18], [62.97, 43.53], [63.32, 43.68], [63.47, 44.03], [64.0, 44.25], [64.25, 44.15], [64.5, 44.25], [64.75, 44.15], [65.0, 44.25], [65.25, 44.15], [65.5, 44.25], [65.75, 44.15], [66.0, 44.25], [66.25, 44.15], [66.5, 44.25], [66.75, 44.15], [67.0, 44.25], [67.25, 44.15], [67.5, 44.25], [67.75, 44.15], [68.0, 44.25], [68.25, 44.15], [68.5, 44.25], [69.03, 44.03], [69.18, 43.68], [69.53, 43.53], [69.75, 43.0], [69.65, 42.75], [69.75, 42.5], [69.53, 41.97], [69.18, 41.82], [69.03, 41.47], [68.68, 41.32], [68.65, 41.25], [68.75, 41.0], [68.53, 40.47], [68.0, 40.25], [67.75, 40.35], [67.5, 40.25], [67.25, 40.35], [67.0, 40.25], [66.75, 40.35], [66.68, 40.32], [66.53, 39.97], [66.18, 39.82], [66.03, 39.47], [65.5, 39.25], [65.25, 39.35], [65.0, 39.25], [64.75, 39.35], [64.5, 39.25], [64.25, 39.35], [64.0, 39.25], [63.47, 39.47], [63.25, 40.0], [63.35, 40.25], [63.32, 40.32], [63.25, 40.35], [63.0, 40.25], [62.75, 40.35], [62.5, 40.25], [61.97, 40.47], [61.75, 41.0], [61.85, 41.25], [61.75, 41.5], [61.85, 41.75]]]]}, "2017-03-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[64.32, 41.18], [64.35, 41.25], [64.25, 41.5], [64.35, 41.75], [64.25, 42.0], [64.47, 42.53], [65.0, 42.75], [65.25, 42.65], [65.5, 42.75], [65.75, 42.65], [66.0, 42.75], [66.25, 42.65], [66.5, 42.75], [66.75, 42.65], [66.82, 42.68], [66.97, 43.03], [67.5, 43.25], [67.75, 43.15], [68.0, 43.25], [68.25, 43.15], [68.5, 43.25], [68.75, 43.15], [69.0, 43.25], [69.53, 43.03], [69.75, 42.5], [69.53, 41.97], [69.18, 41.82], [69.03, 41.47], [68.68, 41.32], [68.65, 41.25], [68.75, 41.0], [68.53, 40.47], [68.0, 40.25], [67.75, 40.35], [67.5, 40.25], [67.25, 40.35], [67.0, 40.25], [66.75, 40.35], [66.68, 40.32], [66.53, 39.97], [66.18, 39.82], [66.03, 39.47], [65.5, 39.25], [65.25, 39.35], [65.0, 39.25], [64.75, 39.35], [64.5, 39.25], [64.25, 39.35], [64.0, 39.25], [63.47, 39.47], [63.25, 40.0], [63.47, 40.53], [63.82, 40.68], [63.97, 41.03], [64.32, 41.18]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.101259288115557}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -8.098410987452764}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [0.4701072493675724, -1.6353423460942054, -2.255122218384429, -1.0660099029426533, -0.07944801173590577]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.4884758038273276, -5.051579103703659, -5.0574092724004345, -3.4495373053546814, -3.42437164047368]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.06059109689662, -8.153519570351275, -8.78879617897669, -7.614253812780631, -7.88767975375765]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.141434944450964, -9.502779933381646, -10.101259288115557, -9.280274650440333, -9.351229994603216]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2199090097616199, -1.6157025405378003, -1.7282429484956012, -1.4897167495857926, -1.5567457128132636]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.2440984841623306, -1.9062012308010257, -1.9886453114736695, -1.7935221902957115, -1.8449082027657249]}}