{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:52:06.018953", "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": "2024-Jun-20_to_2024-Jul-01_34.0_-4.0"}, "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": 2024060000497}, "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": "June 20 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 01 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 12}, "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": 270947.32934224204}, "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": ["Kenya", "Tanzania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": -4.0}, "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": 34.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "34.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 30.75}, "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": -8.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -1.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-06-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.5, -2.75], [35.03, -2.97], [35.25, -3.5], [35.03, -4.03], [34.5, -4.25], [33.97, -4.03], [33.75, -3.5], [33.97, -2.97], [34.5, -2.75]]]]}, "2024-06-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.5, -2.75], [35.03, -2.97], [35.25, -3.5], [35.03, -4.03], [34.5, -4.25], [33.97, -4.03], [33.75, -3.5], [33.97, -2.97], [34.5, -2.75]]]]}, "2024-06-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.85, -4.25], [32.75, -4.0], [32.85, -3.75], [32.75, -3.5], [32.97, -2.97], [33.32, -2.82], [33.47, -2.47], [34.0, -2.25], [34.53, -2.47], [34.68, -2.82], [34.75, -2.85], [34.88, -2.8], [34.75, -2.5], [34.85, -2.25], [34.75, -2.0], [34.97, -1.47], [35.5, -1.25], [36.03, -1.47], [36.25, -2.0], [36.15, -2.25], [36.25, -2.5], [36.04, -3.0], [36.25, -3.5], [36.03, -4.03], [35.68, -4.18], [35.65, -4.25], [35.75, -4.5], [35.53, -5.03], [35.18, -5.18], [35.03, -5.53], [34.5, -5.75], [34.25, -5.65], [34.0, -5.75], [33.75, -5.65], [33.5, -5.75], [32.97, -5.53], [32.75, -5.0], [32.85, -4.75], [32.75, -4.5], [32.85, -4.25]]]]}, "2024-06-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.97, -3.97], [32.32, -3.82], [32.35, -3.75], [32.25, -3.5], [32.47, -2.97], [32.82, -2.82], [32.97, -2.47], [33.5, -2.25], [33.75, -2.35], [34.0, -2.25], [34.25, -2.35], [34.32, -2.32], [34.47, -1.97], [34.82, -1.82], [34.97, -1.47], [35.5, -1.25], [36.03, -1.47], [36.18, -1.82], [36.25, -1.85], [36.5, -1.75], [36.75, -1.85], [37.0, -1.75], [37.53, -1.97], [37.75, -2.5], [37.53, -3.03], [37.0, -3.25], [36.75, -3.15], [36.68, -3.18], [36.54, -3.5], [36.75, -4.0], [36.65, -4.25], [36.68, -4.32], [37.03, -4.47], [37.25, -5.0], [37.03, -5.53], [36.5, -5.75], [36.25, -5.65], [36.0, -5.75], [35.75, -5.65], [35.5, -5.75], [35.25, -5.65], [35.18, -5.68], [35.15, -5.75], [35.25, -6.0], [35.03, -6.53], [34.5, -6.75], [33.97, -6.53], [33.82, -6.18], [33.75, -6.15], [33.5, -6.25], [33.25, -6.15], [33.0, -6.25], [32.47, -6.03], [32.32, -5.68], [31.97, -5.53], [31.75, -5.0], [31.85, -4.75], [31.75, -4.5], [31.97, -3.97]]]]}, "2024-06-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.75, -6.0], [30.96, -5.5], [30.75, -5.0], [30.85, -4.75], [30.75, -4.5], [30.97, -3.97], [31.5, -3.75], [31.75, -3.85], [31.82, -3.82], [31.97, -3.47], [32.32, -3.32], [32.35, -3.25], [32.25, -3.0], [32.47, -2.47], [33.0, -2.25], [33.25, -2.35], [33.5, -2.25], [33.75, -2.35], [34.0, -2.25], [34.25, -2.35], [34.32, -2.32], [34.47, -1.97], [34.82, -1.82], [34.97, -1.47], [35.5, -1.25], [36.03, -1.47], [36.18, -1.82], [36.25, -1.85], [36.5, -1.75], [36.75, -1.85], [37.0, -1.75], [37.53, -1.97], [37.75, -2.5], [37.53, -3.03], [37.0, -3.25], [36.75, -3.15], [36.68, -3.18], [36.54, -3.5], [36.75, -4.0], [36.65, -4.25], [36.68, -4.32], [37.03, -4.47], [37.25, -5.0], [37.03, -5.53], [36.5, -5.75], [36.25, -5.65], [36.0, -5.75], [35.75, -5.65], [35.5, -5.75], [35.25, -5.65], [35.18, -5.68], [35.15, -5.75], [35.25, -6.0], [35.03, -6.53], [34.68, -6.68], [34.65, -6.75], [34.75, -7.0], [34.53, -7.53], [34.0, -7.75], [33.75, -7.65], [33.68, -7.68], [33.54, -8.0], [33.75, -8.5], [33.53, -9.03], [33.0, -9.25], [32.75, -9.15], [32.5, -9.25], [31.97, -9.03], [31.75, -8.5], [31.85, -8.25], [31.75, -8.0], [31.85, -7.75], [31.82, -7.68], [31.5, -7.54], [31.0, -7.75], [30.47, -7.53], [30.25, -7.0], [30.47, -6.47], [30.82, -6.32], [30.85, -6.25], [30.75, -6.0]]]]}, "2024-06-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.35, -5.25], [30.25, -5.0], [30.35, -4.75], [30.25, -4.5], [30.35, -4.25], [30.25, -4.0], [30.35, -3.75], [30.25, -3.5], [30.47, -2.97], [31.0, -2.75], [31.5, -2.96], [32.0, -2.75], [32.3, -2.88], [32.47, -2.47], [32.82, -2.32], [32.97, -1.97], [33.5, -1.75], [34.03, -1.97], [34.18, -2.32], [34.25, -2.35], [34.32, -2.32], [34.47, -1.97], [34.82, -1.82], [34.97, -1.47], [35.5, -1.25], [36.03, -1.47], [36.18, -1.82], [36.25, -1.85], [36.5, -1.75], [36.75, -1.85], [37.0, -1.75], [37.53, -1.97], [37.75, -2.5], [37.53, -3.03], [37.0, -3.25], [36.75, -3.15], [36.68, -3.18], [36.54, -3.5], [36.75, -4.0], [36.65, -4.25], [36.68, -4.32], [37.03, -4.47], [37.25, -5.0], [37.03, -5.53], [36.5, -5.75], [36.25, -5.65], [36.0, -5.75], [35.75, -5.65], [35.5, -5.75], [35.25, -5.65], [35.18, -5.68], [35.15, -5.75], [35.25, -6.0], [35.03, -6.53], [34.68, -6.68], [34.65, -6.75], [34.75, -7.0], [34.53, -7.53], [34.0, -7.75], [33.75, -7.65], [33.68, -7.68], [33.54, -8.0], [33.75, -8.5], [33.53, -9.03], [33.0, -9.25], [32.75, -9.15], [32.5, -9.25], [31.97, -9.03], [31.75, -8.5], [31.85, -8.25], [31.75, -8.0], [31.85, -7.75], [31.82, -7.68], [31.5, -7.54], [31.0, -7.75], [30.47, -7.53], [30.25, -7.0], [30.46, -6.5], [30.25, -6.0], [30.35, -5.75], [30.25, -5.5], [30.35, -5.25]]]]}, "2024-06-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.35, -5.25], [30.25, -5.0], [30.35, -4.75], [30.25, -4.5], [30.35, -4.25], [30.25, -4.0], [30.35, -3.75], [30.25, -3.5], [30.47, -2.97], [31.0, -2.75], [31.5, -2.96], [32.0, -2.75], [32.3, -2.88], [32.47, -2.47], [32.82, -2.32], [32.97, -1.97], [33.5, -1.75], [34.03, -1.97], [34.18, -2.32], [34.53, -2.47], [34.75, -3.0], [34.65, -3.25], [34.68, -3.32], [35.03, -3.47], [35.25, -4.0], [35.15, -4.25], [35.25, -4.5], [35.15, -4.75], [35.25, -5.0], [35.04, -5.5], [35.25, -6.0], [35.03, -6.53], [34.68, -6.68], [34.65, -6.75], [34.75, -7.0], [34.53, -7.53], [34.0, -7.75], [33.75, -7.65], [33.68, -7.68], [33.54, -8.0], [33.75, -8.5], [33.53, -9.03], [33.0, -9.25], [32.75, -9.15], [32.5, -9.25], [31.97, -9.03], [31.75, -8.5], [31.85, -8.25], [31.75, -8.0], [31.85, -7.75], [31.82, -7.68], [31.5, -7.54], [31.0, -7.75], [30.47, -7.53], [30.25, -7.0], [30.46, -6.5], [30.25, -6.0], [30.35, -5.75], [30.25, -5.5], [30.35, -5.25]]]]}, "2024-06-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.35, -5.25], [30.25, -5.0], [30.35, -4.75], [30.25, -4.5], [30.35, -4.25], [30.25, -4.0], [30.35, -3.75], [30.25, -3.5], [30.47, -2.97], [31.0, -2.75], [31.5, -2.96], [32.0, -2.75], [32.3, -2.88], [32.47, -2.47], [32.82, -2.32], [32.97, -1.97], [33.5, -1.75], [34.03, -1.97], [34.18, -2.32], [34.53, -2.47], [34.75, -3.0], [34.65, -3.25], [34.68, -3.32], [35.03, -3.47], [35.25, -4.0], [35.03, -4.53], [34.5, -4.75], [34.25, -4.65], [34.0, -4.75], [33.75, -4.65], [33.68, -4.68], [33.53, -5.03], [33.18, -5.18], [33.03, -5.53], [32.68, -5.68], [32.65, -5.75], [32.68, -5.82], [33.03, -5.97], [33.25, -6.5], [33.15, -6.75], [33.25, -7.0], [33.03, -7.53], [32.5, -7.75], [31.97, -7.53], [31.82, -7.18], [31.75, -7.15], [31.5, -7.25], [30.97, -7.03], [30.82, -6.68], [30.47, -6.53], [30.25, -6.0], [30.35, -5.75], [30.25, -5.5], [30.35, -5.25]]]]}, "2024-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.0, -3.25], [34.53, -3.47], [34.75, -4.0], [34.53, -4.53], [34.0, -4.75], [33.47, -4.53], [33.25, -4.0], [33.47, -3.47], [34.0, -3.25]]]]}, "2024-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.0, -3.25], [34.53, -3.47], [34.75, -4.0], [34.53, -4.53], [34.0, -4.75], [33.47, -4.53], [33.25, -4.0], [33.47, -3.47], [34.0, -3.25]]]]}, "2024-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.0, -3.25], [34.53, -3.47], [34.75, -4.0], [34.53, -4.53], [34.0, -4.75], [33.47, -4.53], [33.25, -4.0], [33.47, -3.47], [34.0, -3.25]]]]}, "2024-07-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.0, -3.25], [34.53, -3.47], [34.75, -4.0], [34.53, -4.53], [34.0, -4.75], [33.47, -4.53], [33.25, -4.0], [33.47, -3.47], [34.0, -3.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.8829299023583985}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.701310265298023}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.843319352688525, 20.35009143392716, 20.232968780435044, 19.58273641586652, 19.657508128893085, 19.532656586257303, 20.371502605117826, 21.251957224830107, 22.17918130791014, 21.88786857467261, 21.536782724160673, 22.241580287343993]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.843319352688525, 20.35009143392716, 15.347097760764143, 14.934939377384978, 14.61382129898476, 14.603182333817756, 17.536450607883978, 19.815950411762742, 22.17918130791014, 21.88786857467261, 21.536782724160673, 22.241580287343993]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.10053451110349, -1.5568400611590505, -1.3836697356558956, -1.4651459715740267, -1.7098024561659149, -1.9107908262136297, -1.8080303159738982, -1.407766020167778, -1.712303280009337, -1.9605435699520513, -2.262543944083575, -1.5101846914816974]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.10053451110349, -1.5568400611590505, -2.0591444094456506, -2.679590984335505, -2.5332165564493607, -2.8829299023583985, -2.6134806021103714, -2.0216566584580846, -1.712303280009337, -1.9605435699520513, -2.262543944083575, -1.5101846914816974]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.2497172775284042, -1.6339491125887617, -1.5222961569596343, -1.6535291773405638, -1.8980902215872748, -2.1670385373808903, -2.0449622680489674, -1.6522513959447616, -1.7209934060414764, -1.9572093904098855, -2.239951820204938, -1.4692240610843268]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2497172775284042, -1.6339491125887617, -1.9969057536670267, -2.605855514077204, -2.524449133091339, -3.174695015962054, -2.971639040420564, -2.1072390366058, -1.7209934060414764, -1.9572093904098855, -2.239951820204938, -1.4692240610843268]}}