{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:26:27.077315", "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-Jul-13_to_2021-Jul-18_40.0_9.5"}, "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": 2021070000547}, "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": "July 13 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 18 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 54811.459080998044}, "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": ["Ethiopia", "Somalia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": 9.5}, "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": 40.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "40.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 39.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 44.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 8.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 10.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-07-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.5, 11.25], [41.03, 11.03], [41.25, 10.5], [41.04, 10.0], [41.25, 9.5], [41.03, 8.97], [40.5, 8.75], [39.97, 8.97], [39.75, 9.5], [39.96, 10.0], [39.75, 10.5], [39.97, 11.03], [40.5, 11.25]]], [[[41.47, 10.53], [42.0, 10.75], [42.25, 10.65], [42.5, 10.75], [42.75, 10.65], [42.82, 10.68], [42.97, 11.03], [43.5, 11.25], [44.03, 11.03], [44.18, 10.68], [44.25, 10.65], [44.5, 10.75], [45.03, 10.53], [45.25, 10.0], [45.03, 9.47], [44.5, 9.25], [44.25, 9.35], [44.18, 9.32], [44.03, 8.97], [43.5, 8.75], [43.25, 8.85], [43.0, 8.75], [42.75, 8.85], [42.5, 8.75], [41.97, 8.97], [41.82, 9.32], [41.47, 9.47], [41.25, 10.0], [41.47, 10.53]]]]}, "2021-07-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.47, 10.03], [39.82, 10.18], [39.85, 10.25], [39.75, 10.5], [39.97, 11.03], [40.5, 11.25], [40.75, 11.15], [41.0, 11.25], [41.53, 11.03], [41.7, 10.63], [42.0, 10.75], [42.25, 10.65], [42.5, 10.75], [42.75, 10.65], [42.82, 10.68], [42.97, 11.03], [43.5, 11.25], [44.03, 11.03], [44.18, 10.68], [44.25, 10.65], [44.5, 10.75], [45.03, 10.53], [45.25, 10.0], [45.03, 9.47], [44.5, 9.25], [44.25, 9.35], [44.18, 9.32], [44.03, 8.97], [43.5, 8.75], [43.25, 8.85], [43.0, 8.75], [42.75, 8.85], [42.5, 8.75], [41.97, 8.97], [41.82, 9.32], [41.47, 9.47], [41.3, 9.88], [41.18, 9.82], [41.15, 9.75], [41.25, 9.5], [41.03, 8.97], [40.68, 8.82], [40.53, 8.47], [40.0, 8.25], [39.47, 8.47], [39.25, 9.0], [39.35, 9.25], [39.25, 9.5], [39.47, 10.03]]]]}, "2021-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.35, 9.75], [39.25, 10.0], [39.47, 10.53], [39.82, 10.68], [39.97, 11.03], [40.5, 11.25], [40.75, 11.15], [41.0, 11.25], [41.53, 11.03], [41.68, 10.68], [41.75, 10.65], [42.0, 10.75], [42.25, 10.65], [42.5, 10.75], [42.75, 10.65], [42.82, 10.68], [42.97, 11.03], [43.5, 11.25], [44.03, 11.03], [44.18, 10.68], [44.25, 10.65], [44.5, 10.75], [45.03, 10.53], [45.25, 10.0], [45.03, 9.47], [44.5, 9.25], [44.25, 9.35], [44.18, 9.32], [44.03, 8.97], [43.5, 8.75], [43.25, 8.85], [43.0, 8.75], [42.75, 8.85], [42.5, 8.75], [41.97, 8.97], [41.82, 9.32], [41.75, 9.35], [41.5, 9.25], [41.2, 9.38], [41.03, 8.97], [40.68, 8.82], [40.53, 8.47], [40.0, 8.25], [39.47, 8.47], [39.25, 9.0], [39.35, 9.25], [39.25, 9.5], [39.35, 9.75]]]]}, "2021-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.35, 9.75], [39.25, 10.0], [39.47, 10.53], [39.82, 10.68], [39.97, 11.03], [40.5, 11.25], [40.75, 11.15], [41.0, 11.25], [41.53, 11.03], [41.68, 10.68], [42.03, 10.53], [42.25, 10.0], [42.03, 9.47], [41.5, 9.25], [41.2, 9.38], [41.03, 8.97], [40.68, 8.82], [40.53, 8.47], [40.0, 8.25], [39.47, 8.47], [39.25, 9.0], [39.35, 9.25], [39.25, 9.5], [39.35, 9.75]]]]}, "2021-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.35, 9.75], [39.25, 10.0], [39.47, 10.53], [39.82, 10.68], [39.97, 11.03], [40.5, 11.25], [40.75, 11.15], [41.0, 11.25], [41.53, 11.03], [41.68, 10.68], [42.03, 10.53], [42.25, 10.0], [42.03, 9.47], [41.5, 9.25], [41.2, 9.38], [41.03, 8.97], [40.68, 8.82], [40.53, 8.47], [40.0, 8.25], [39.47, 8.47], [39.25, 9.0], [39.35, 9.25], [39.25, 9.5], [39.35, 9.75]]]]}, "2021-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.0, 10.25], [40.53, 10.03], [40.75, 9.5], [40.53, 8.97], [40.0, 8.75], [39.47, 8.97], [39.25, 9.5], [39.47, 10.03], [40.0, 10.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.830446938272303}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.631431847350751}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.74013344799431, 24.48613437349286, 24.198072813098747, 26.744265029609153, 26.198284416090473, 25.746447477628408]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.10026965811079, 16.23490594285255, 16.625385812868842, 24.77876117184684, 24.476658182710423, 25.746447477628408]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.7479653589378426, -2.7009307849029653, -3.095410076912114, -2.5052401511435676, -2.9827519258472392, -1.9684115170512655]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.628259180982184, -3.649327988955747, -4.830446938272303, -3.1349020951909097, -3.522660808602211, -1.9684115170512655]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4676409132772408, -2.1782441679195736, -2.285148168492765, -1.5795542939487235, -1.8893430512750427, -1.4050224229932968]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7392760923388428, -3.316939346389553, -2.797216755905834, -1.7481244986018183, -2.304490530931976, -1.4050224229932968]}}