{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:37.955416", "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": "2022-Jul-18_to_2022-Jul-20_48.0_7.0"}, "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": 2022070000812}, "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 18 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 20 2022"}, "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": 55236.55502847379}, "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": ["Somalia"]}, "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": ["Indian Ocean"]}, "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": 7.0}, "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": 48.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "48.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 46.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 49.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 6.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 8.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[46.85, 7.25], [46.75, 7.5], [46.97, 8.03], [47.32, 8.18], [47.47, 8.53], [48.0, 8.75], [48.25, 8.65], [48.5, 8.75], [48.75, 8.65], [49.0, 8.75], [49.53, 8.53], [49.75, 8.0], [49.53, 7.47], [49.18, 7.32], [49.15, 7.25], [49.25, 7.0], [49.15, 6.75], [49.25, 6.5], [49.15, 6.25], [49.25, 6.0], [49.03, 5.47], [48.5, 5.25], [48.25, 5.35], [48.0, 5.25], [47.75, 5.35], [47.5, 5.25], [47.25, 5.35], [47.0, 5.25], [46.75, 5.35], [46.5, 5.25], [45.97, 5.47], [45.75, 6.0], [45.97, 6.53], [46.32, 6.68], [46.47, 7.03], [46.82, 7.18], [46.85, 7.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.47, 7.03], [46.82, 7.18], [46.85, 7.25], [46.75, 7.5], [46.97, 8.03], [47.32, 8.18], [47.47, 8.53], [48.0, 8.75], [48.25, 8.65], [48.5, 8.75], [48.75, 8.65], [49.0, 8.75], [49.53, 8.53], [49.75, 8.0], [49.53, 7.47], [49.18, 7.32], [49.15, 7.25], [49.25, 7.0], [49.15, 6.75], [49.25, 6.5], [49.15, 6.25], [49.25, 6.0], [49.03, 5.47], [48.5, 5.25], [48.25, 5.35], [48.0, 5.25], [47.75, 5.35], [47.5, 5.25], [47.25, 5.35], [47.0, 5.25], [46.75, 5.35], [46.5, 5.25], [45.97, 5.47], [45.75, 6.0], [45.97, 6.53], [46.32, 6.68], [46.47, 7.03]]]]}, "2022-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.47, 7.03], [46.82, 7.18], [46.85, 7.25], [46.75, 7.5], [46.97, 8.03], [47.32, 8.18], [47.47, 8.53], [48.0, 8.75], [48.25, 8.65], [48.5, 8.75], [48.75, 8.65], [49.0, 8.75], [49.53, 8.53], [49.75, 8.0], [49.53, 7.47], [49.18, 7.32], [49.15, 7.25], [49.25, 7.0], [49.15, 6.75], [49.25, 6.5], [49.15, 6.25], [49.25, 6.0], [49.03, 5.47], [48.5, 5.25], [48.25, 5.35], [48.0, 5.25], [47.75, 5.35], [47.5, 5.25], [47.25, 5.35], [47.0, 5.25], [46.75, 5.35], [46.5, 5.25], [45.97, 5.47], [45.75, 6.0], [45.97, 6.53], [46.32, 6.68], [46.47, 7.03]]]]}, "2022-07-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.47, 7.03], [46.82, 7.18], [46.85, 7.25], [46.75, 7.5], [46.97, 8.03], [47.32, 8.18], [47.47, 8.53], [48.0, 8.75], [48.25, 8.65], [48.5, 8.75], [48.75, 8.65], [49.0, 8.75], [49.53, 8.53], [49.75, 8.0], [49.53, 7.47], [49.18, 7.32], [49.15, 7.25], [49.25, 7.0], [49.15, 6.75], [49.25, 6.5], [49.15, 6.25], [49.25, 6.0], [49.03, 5.47], [48.5, 5.25], [48.25, 5.35], [48.0, 5.25], [47.75, 5.35], [47.5, 5.25], [47.25, 5.35], [47.0, 5.25], [46.75, 5.35], [46.5, 5.25], [45.97, 5.47], [45.75, 6.0], [45.97, 6.53], [46.32, 6.68], [46.47, 7.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.455313553111978}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.4466192713445816}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.30748219528948, 26.413321711836602, 25.886833124749387]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.526715145456762, 24.550408749186545, 23.12191895435302]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3595224841557751, -1.244901956328546, -1.7354333735494234]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6768971574125544, -1.4761614910461276, -2.455313553111978]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.980342884836904, -1.7967279184897462, -2.4653768832905203]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.585370055130818, -2.277591004899517, -3.3611354689819315]}}