{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:19:07.361861", "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": "2020-Mar-08_to_2020-Mar-10_91.0_40.5"}, "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": 2020030000244}, "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 08 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 10 2020"}, "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": 73592.19635281427}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.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": 40.5}, "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": 91.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "91.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 85.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 91.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 38.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 40.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[85.75, 40.0], [85.97, 40.53], [86.32, 40.68], [86.47, 41.03], [87.0, 41.25], [87.25, 41.15], [87.5, 41.25], [87.75, 41.15], [88.0, 41.25], [88.25, 41.15], [88.5, 41.25], [88.75, 41.15], [89.0, 41.25], [89.25, 41.15], [89.5, 41.25], [89.75, 41.15], [90.0, 41.25], [90.5, 41.04], [91.0, 41.25], [91.53, 41.03], [91.75, 40.5], [91.65, 40.25], [91.75, 40.0], [91.53, 39.47], [91.0, 39.25], [90.75, 39.35], [90.5, 39.25], [90.25, 39.35], [90.18, 39.32], [90.03, 38.97], [89.5, 38.75], [89.25, 38.85], [89.18, 38.82], [89.03, 38.47], [88.5, 38.25], [88.25, 38.35], [88.0, 38.25], [87.75, 38.35], [87.5, 38.25], [87.25, 38.35], [87.0, 38.25], [86.75, 38.35], [86.5, 38.25], [86.25, 38.35], [86.0, 38.25], [85.47, 38.47], [85.25, 39.0], [85.47, 39.53], [85.82, 39.68], [85.85, 39.75], [85.75, 40.0]]]]}, "2020-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[85.75, 40.0], [85.97, 40.53], [86.32, 40.68], [86.47, 41.03], [87.0, 41.25], [87.25, 41.15], [87.5, 41.25], [87.75, 41.15], [88.0, 41.25], [88.25, 41.15], [88.5, 41.25], [88.75, 41.15], [89.0, 41.25], [89.25, 41.15], [89.5, 41.25], [89.75, 41.15], [90.0, 41.25], [90.5, 41.04], [91.0, 41.25], [91.53, 41.03], [91.75, 40.5], [91.65, 40.25], [91.75, 40.0], [91.53, 39.47], [91.0, 39.25], [90.75, 39.35], [90.5, 39.25], [90.25, 39.35], [90.18, 39.32], [90.03, 38.97], [89.5, 38.75], [89.25, 38.85], [89.18, 38.82], [89.03, 38.47], [88.5, 38.25], [88.25, 38.35], [88.0, 38.25], [87.75, 38.35], [87.5, 38.25], [87.25, 38.35], [87.0, 38.25], [86.75, 38.35], [86.5, 38.25], [86.25, 38.35], [86.0, 38.25], [85.47, 38.47], [85.25, 39.0], [85.47, 39.53], [85.82, 39.68], [85.85, 39.75], [85.75, 40.0]]]]}, "2020-03-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[85.75, 40.0], [85.97, 40.53], [86.32, 40.68], [86.47, 41.03], [87.0, 41.25], [87.25, 41.15], [87.5, 41.25], [87.75, 41.15], [88.0, 41.25], [88.25, 41.15], [88.5, 41.25], [88.75, 41.15], [89.0, 41.25], [89.25, 41.15], [89.5, 41.25], [89.75, 41.15], [90.0, 41.25], [90.5, 41.04], [91.0, 41.25], [91.53, 41.03], [91.75, 40.5], [91.65, 40.25], [91.75, 40.0], [91.53, 39.47], [91.0, 39.25], [90.75, 39.35], [90.5, 39.25], [90.25, 39.35], [90.18, 39.32], [90.03, 38.97], [89.5, 38.75], [89.25, 38.85], [89.18, 38.82], [89.03, 38.47], [88.5, 38.25], [88.25, 38.35], [88.0, 38.25], [87.75, 38.35], [87.5, 38.25], [87.25, 38.35], [87.0, 38.25], [86.75, 38.35], [86.5, 38.25], [86.25, 38.35], [86.0, 38.25], [85.47, 38.47], [85.25, 39.0], [85.47, 39.53], [85.82, 39.68], [85.85, 39.75], [85.75, 40.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.889050387970713}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.44611009700803}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [0.44815293017819613, -0.46684586592311916, 2.1399755909505416]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-3.4619082702310493, -1.3966282796446876, 0.4440277699719104]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.384610676231737, -7.5964457159940295, -5.357273898798322]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.889050387970713, -8.343592117828905, -6.429642064580094]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9904709218910643, -2.2903327625108583, -1.561710668044186]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.0401979273763917, -2.4928049281514246, -1.843792159387102]}}