{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:59.506442", "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": "2013-Apr-03_to_2013-Apr-05_103.0_46.0"}, "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": 2013040000200}, "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": "April 03 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 05 2013"}, "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": "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": 139698.36441672684}, "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": ["Mongolia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Siberia"]}, "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": 46.0}, "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": 103.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "103.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 102.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 111.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 44.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 47.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-04-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[101.97, 45.47], [101.75, 46.0], [101.97, 46.53], [102.5, 46.75], [102.75, 46.65], [102.82, 46.68], [102.97, 47.03], [103.5, 47.25], [103.75, 47.15], [103.82, 47.18], [103.97, 47.53], [104.5, 47.75], [105.0, 47.54], [105.5, 47.75], [105.75, 47.65], [106.0, 47.75], [106.25, 47.65], [106.5, 47.75], [107.0, 47.54], [107.5, 47.75], [108.03, 47.53], [108.18, 47.18], [108.25, 47.15], [108.32, 47.18], [108.47, 47.53], [109.0, 47.75], [109.25, 47.65], [109.5, 47.75], [110.03, 47.53], [110.18, 47.18], [110.25, 47.15], [110.5, 47.25], [111.03, 47.03], [111.18, 46.68], [111.53, 46.53], [111.75, 46.0], [111.65, 45.75], [111.75, 45.5], [111.53, 44.97], [111.0, 44.75], [110.75, 44.85], [110.68, 44.82], [110.53, 44.47], [110.0, 44.25], [109.75, 44.35], [109.5, 44.25], [109.25, 44.35], [109.0, 44.25], [108.75, 44.35], [108.5, 44.25], [108.25, 44.35], [108.0, 44.25], [107.75, 44.35], [107.5, 44.25], [107.25, 44.35], [107.0, 44.25], [106.75, 44.35], [106.5, 44.25], [106.25, 44.35], [106.0, 44.25], [105.75, 44.35], [105.5, 44.25], [105.25, 44.35], [105.0, 44.25], [104.47, 44.47], [104.32, 44.82], [103.97, 44.97], [103.82, 45.32], [103.75, 45.35], [103.5, 45.25], [103.25, 45.35], [103.0, 45.25], [102.75, 45.35], [102.5, 45.25], [101.97, 45.47]]]]}, "2013-04-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[101.97, 45.47], [101.75, 46.0], [101.97, 46.53], [102.5, 46.75], [102.75, 46.65], [102.82, 46.68], [102.97, 47.03], [103.5, 47.25], [103.75, 47.15], [103.82, 47.18], [103.97, 47.53], [104.5, 47.75], [105.0, 47.54], [105.5, 47.75], [105.75, 47.65], [106.0, 47.75], [106.25, 47.65], [106.5, 47.75], [107.0, 47.54], [107.5, 47.75], [108.03, 47.53], [108.18, 47.18], [108.25, 47.15], [108.32, 47.18], [108.47, 47.53], [109.0, 47.75], [109.25, 47.65], [109.5, 47.75], [110.03, 47.53], [110.18, 47.18], [110.25, 47.15], [110.5, 47.25], [111.03, 47.03], [111.18, 46.68], [111.53, 46.53], [111.75, 46.0], [111.65, 45.75], [111.75, 45.5], [111.53, 44.97], [111.0, 44.75], [110.75, 44.85], [110.68, 44.82], [110.53, 44.47], [110.0, 44.25], [109.75, 44.35], [109.5, 44.25], [109.25, 44.35], [109.0, 44.25], [108.75, 44.35], [108.5, 44.25], [108.25, 44.35], [108.0, 44.25], [107.75, 44.35], [107.5, 44.25], [107.25, 44.35], [107.0, 44.25], [106.75, 44.35], [106.5, 44.25], [106.25, 44.35], [106.0, 44.25], [105.75, 44.35], [105.5, 44.25], [105.25, 44.35], [105.0, 44.25], [104.47, 44.47], [104.32, 44.82], [103.97, 44.97], [103.82, 45.32], [103.75, 45.35], [103.5, 45.25], [103.25, 45.35], [103.0, 45.25], [102.75, 45.35], [102.5, 45.25], [101.97, 45.47]]]]}, "2013-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[101.97, 45.47], [101.75, 46.0], [101.97, 46.53], [102.5, 46.75], [102.75, 46.65], [102.82, 46.68], [102.97, 47.03], [103.5, 47.25], [103.75, 47.15], [103.82, 47.18], [103.97, 47.53], [104.5, 47.75], [105.0, 47.54], [105.5, 47.75], [105.75, 47.65], [106.0, 47.75], [106.25, 47.65], [106.5, 47.75], [107.0, 47.54], [107.5, 47.75], [108.03, 47.53], [108.18, 47.18], [108.25, 47.15], [108.32, 47.18], [108.47, 47.53], [109.0, 47.75], [109.25, 47.65], [109.5, 47.75], [110.03, 47.53], [110.18, 47.18], [110.25, 47.15], [110.5, 47.25], [111.03, 47.03], [111.18, 46.68], [111.53, 46.53], [111.75, 46.0], [111.65, 45.75], [111.75, 45.5], [111.53, 44.97], [111.0, 44.75], [110.75, 44.85], [110.68, 44.82], [110.53, 44.47], [110.0, 44.25], [109.75, 44.35], [109.5, 44.25], [109.25, 44.35], [109.0, 44.25], [108.75, 44.35], [108.5, 44.25], [108.25, 44.35], [108.0, 44.25], [107.75, 44.35], [107.5, 44.25], [107.25, 44.35], [107.0, 44.25], [106.75, 44.35], [106.5, 44.25], [106.25, 44.35], [106.0, 44.25], [105.75, 44.35], [105.5, 44.25], [105.25, 44.35], [105.0, 44.25], [104.47, 44.47], [104.32, 44.82], [103.97, 44.97], [103.82, 45.32], [103.75, 45.35], [103.5, 45.25], [103.25, 45.35], [103.0, 45.25], [102.75, 45.35], [102.5, 45.25], [101.97, 45.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -15.101136201741497}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -8.54891937644778}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-5.496949663703276, -7.335479882485231, -6.08312328791834]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-8.233494719869839, -14.999403538631896, -11.295127850770086]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.601481371981932, -9.55545290570383, -8.489823851657558]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.967173197580337, -15.101136201741497, -12.150604735192701]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5809777871397463, -1.9964769724474554, -1.7219114649316676]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8465426217767753, -3.3007072949539, -2.447470214967489]}}