{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:08.337712", "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-Oct-19_to_2017-Oct-22_36.5_2.5"}, "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": 2017100000552}, "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": "October 19 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 22 2017"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 89468.78404802272}, "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", "Kenya"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa", "S.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": 2.5}, "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": 36.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "36.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 34.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 37.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 0.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 5.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-10-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.46, 4.0], [34.25, 4.5], [34.47, 5.03], [35.0, 5.25], [35.25, 5.15], [35.32, 5.18], [35.47, 5.53], [36.0, 5.75], [36.25, 5.65], [36.5, 5.75], [36.75, 5.65], [37.0, 5.75], [37.53, 5.53], [37.75, 5.0], [37.65, 4.75], [37.75, 4.5], [37.65, 4.25], [37.75, 4.0], [37.54, 3.5], [37.75, 3.0], [37.53, 2.47], [37.18, 2.32], [37.15, 2.25], [37.25, 2.0], [37.15, 1.75], [37.25, 1.5], [37.03, 0.97], [36.68, 0.82], [36.53, 0.47], [36.0, 0.25], [35.47, 0.47], [35.25, 1.0], [35.35, 1.25], [35.25, 1.5], [35.35, 1.75], [35.32, 1.82], [34.97, 1.97], [34.82, 2.32], [34.47, 2.47], [34.25, 3.0], [34.35, 3.25], [34.25, 3.5], [34.46, 4.0]]]]}, "2017-10-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.46, 4.0], [34.25, 4.5], [34.47, 5.03], [35.0, 5.25], [35.25, 5.15], [35.32, 5.18], [35.47, 5.53], [36.0, 5.75], [36.25, 5.65], [36.5, 5.75], [36.75, 5.65], [37.0, 5.75], [37.53, 5.53], [37.75, 5.0], [37.65, 4.75], [37.75, 4.5], [37.65, 4.25], [37.75, 4.0], [37.54, 3.5], [37.75, 3.0], [37.53, 2.47], [37.18, 2.32], [37.15, 2.25], [37.25, 2.0], [37.15, 1.75], [37.25, 1.5], [37.03, 0.97], [36.68, 0.82], [36.53, 0.47], [36.0, 0.25], [35.47, 0.47], [35.25, 1.0], [35.35, 1.25], [35.25, 1.5], [35.35, 1.75], [35.32, 1.82], [34.97, 1.97], [34.82, 2.32], [34.47, 2.47], [34.25, 3.0], [34.35, 3.25], [34.25, 3.5], [34.46, 4.0]]]]}, "2017-10-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.46, 4.0], [34.25, 4.5], [34.47, 5.03], [35.0, 5.25], [35.25, 5.15], [35.32, 5.18], [35.47, 5.53], [36.0, 5.75], [36.25, 5.65], [36.5, 5.75], [36.75, 5.65], [37.0, 5.75], [37.53, 5.53], [37.75, 5.0], [37.65, 4.75], [37.75, 4.5], [37.65, 4.25], [37.75, 4.0], [37.54, 3.5], [37.75, 3.0], [37.53, 2.47], [37.18, 2.32], [37.15, 2.25], [37.25, 2.0], [37.15, 1.75], [37.25, 1.5], [37.03, 0.97], [36.68, 0.82], [36.53, 0.47], [36.0, 0.25], [35.47, 0.47], [35.25, 1.0], [35.35, 1.25], [35.25, 1.5], [35.35, 1.75], [35.32, 1.82], [34.97, 1.97], [34.82, 2.32], [34.47, 2.47], [34.25, 3.0], [34.35, 3.25], [34.25, 3.5], [34.46, 4.0]]]]}, "2017-10-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.85, 3.25], [34.75, 3.5], [34.85, 3.75], [34.75, 4.0], [34.97, 4.53], [35.5, 4.75], [36.0, 4.54], [36.5, 4.75], [36.75, 4.65], [37.0, 4.75], [37.53, 4.53], [37.75, 4.0], [37.53, 3.47], [37.18, 3.32], [37.15, 3.25], [37.25, 3.0], [37.15, 2.75], [37.25, 2.5], [37.15, 2.25], [37.25, 2.0], [37.15, 1.75], [37.25, 1.5], [37.03, 0.97], [36.5, 0.75], [36.25, 0.85], [36.0, 0.75], [35.47, 0.97], [35.25, 1.5], [35.35, 1.75], [35.32, 1.82], [34.97, 1.97], [34.75, 2.5], [34.85, 2.75], [34.75, 3.0], [34.85, 3.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.5727421896623355}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.3296875758748654}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.789635557009092, 25.379988223251075, 25.10227381465137, 26.075688998106557]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.808008653629543, 23.071364153249476, 22.920643122745275, 23.722792742194258]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.8182371150480794, -3.136412194954238, -3.3503087833450538, -2.757127225502334]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.5727421896623355, -4.443815433562406, -4.786790473836561, -3.838473823326808]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.58238642145029, -2.1501753484418193, -2.2405658955017027, -1.815002641903951]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.2772693688230605, -2.942423306318946, -3.0787593538331572, -2.4841927227549374]}}