{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:50.368096", "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": "2019-Nov-09_to_2019-Nov-15_47.5_8.5"}, "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": 2019110000298}, "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": "November 09 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 15 2019"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 162058.70637374613}, "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": 8.5}, "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": 47.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "47.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 44.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 50.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 6.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 10.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-11-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.82, 9.18], [46.85, 9.25], [46.75, 9.5], [46.97, 10.03], [47.5, 10.25], [48.03, 10.03], [48.18, 9.68], [48.25, 9.65], [48.5, 9.75], [48.75, 9.65], [48.82, 9.68], [48.97, 10.03], [49.5, 10.25], [49.75, 10.15], [50.0, 10.25], [50.53, 10.03], [50.75, 9.5], [50.65, 9.25], [50.75, 9.0], [50.53, 8.47], [50.18, 8.32], [50.15, 8.25], [50.25, 8.0], [50.03, 7.47], [49.5, 7.25], [48.97, 7.47], [48.82, 7.82], [48.75, 7.85], [48.5, 7.75], [48.25, 7.85], [48.0, 7.75], [47.75, 7.85], [47.68, 7.82], [47.53, 7.47], [47.0, 7.25], [46.75, 7.35], [46.5, 7.25], [45.97, 7.47], [45.75, 8.0], [45.97, 8.53], [46.32, 8.68], [46.47, 9.03], [46.82, 9.18]]]]}, "2019-11-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.85, 8.75], [45.75, 9.0], [45.97, 9.53], [46.32, 9.68], [46.47, 10.03], [46.82, 10.18], [46.97, 10.53], [47.5, 10.75], [48.03, 10.53], [48.18, 10.18], [48.53, 10.03], [48.68, 9.68], [48.75, 9.65], [48.82, 9.68], [48.97, 10.03], [49.5, 10.25], [49.75, 10.15], [50.0, 10.25], [50.53, 10.03], [50.68, 9.68], [51.03, 9.53], [51.25, 9.0], [51.03, 8.47], [50.68, 8.32], [50.53, 7.97], [50.18, 7.82], [50.15, 7.75], [50.25, 7.5], [50.03, 6.97], [49.68, 6.82], [49.53, 6.47], [49.0, 6.25], [48.75, 6.35], [48.5, 6.25], [48.25, 6.35], [48.0, 6.25], [47.75, 6.35], [47.5, 6.25], [46.97, 6.47], [46.75, 7.0], [46.85, 7.25], [46.82, 7.32], [46.75, 7.35], [46.5, 7.25], [45.97, 7.47], [45.75, 8.0], [45.85, 8.25], [45.75, 8.5], [45.85, 8.75]]]]}, "2019-11-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.0, 10.25], [45.25, 10.15], [45.5, 10.25], [46.03, 10.03], [46.18, 9.68], [46.25, 9.65], [46.32, 9.68], [46.47, 10.03], [46.82, 10.18], [46.97, 10.53], [47.5, 10.75], [48.03, 10.53], [48.18, 10.18], [48.53, 10.03], [48.68, 9.68], [48.75, 9.65], [48.82, 9.68], [48.97, 10.03], [49.5, 10.25], [49.75, 10.15], [50.0, 10.25], [50.53, 10.03], [50.68, 9.68], [51.03, 9.53], [51.25, 9.0], [51.03, 8.47], [50.68, 8.32], [50.53, 7.97], [50.18, 7.82], [50.15, 7.75], [50.25, 7.5], [50.03, 6.97], [49.68, 6.82], [49.53, 6.47], [49.0, 6.25], [48.75, 6.35], [48.5, 6.25], [48.25, 6.35], [48.0, 6.25], [47.75, 6.35], [47.5, 6.25], [47.25, 6.35], [47.0, 6.25], [46.75, 6.35], [46.5, 6.25], [45.97, 6.47], [45.82, 6.82], [45.47, 6.97], [45.25, 7.5], [45.35, 7.75], [45.25, 8.0], [45.35, 8.25], [45.32, 8.32], [45.25, 8.35], [45.0, 8.25], [44.75, 8.35], [44.5, 8.25], [43.97, 8.47], [43.75, 9.0], [43.97, 9.53], [44.32, 9.68], [44.47, 10.03], [45.0, 10.25]]]]}, "2019-11-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.97, 9.53], [44.32, 9.68], [44.47, 10.03], [45.0, 10.25], [45.25, 10.15], [45.5, 10.25], [46.03, 10.03], [46.18, 9.68], [46.25, 9.65], [46.32, 9.68], [46.47, 10.03], [46.82, 10.18], [46.97, 10.53], [47.5, 10.75], [48.03, 10.53], [48.18, 10.18], [48.53, 10.03], [48.68, 9.68], [48.75, 9.65], [49.0, 9.75], [49.3, 9.63], [49.47, 10.03], [50.0, 10.25], [50.53, 10.03], [50.68, 9.68], [51.03, 9.53], [51.25, 9.0], [51.03, 8.47], [50.68, 8.32], [50.53, 7.97], [50.18, 7.82], [50.15, 7.75], [50.25, 7.5], [50.03, 6.97], [49.68, 6.82], [49.53, 6.47], [49.0, 6.25], [48.75, 6.35], [48.5, 6.25], [48.25, 6.35], [48.0, 6.25], [47.75, 6.35], [47.5, 6.25], [47.25, 6.35], [47.0, 6.25], [46.75, 6.35], [46.5, 6.25], [45.97, 6.47], [45.82, 6.82], [45.47, 6.97], [45.25, 7.5], [45.35, 7.75], [45.25, 8.0], [45.35, 8.25], [45.32, 8.32], [45.25, 8.35], [45.18, 8.32], [45.03, 7.97], [44.5, 7.75], [43.97, 7.97], [43.75, 8.5], [43.85, 8.75], [43.75, 9.0], [43.97, 9.53]]]]}, "2019-11-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.97, 9.53], [44.32, 9.68], [44.47, 10.03], [45.0, 10.25], [45.25, 10.15], [45.5, 10.25], [46.03, 10.03], [46.18, 9.68], [46.25, 9.65], [46.5, 9.75], [47.03, 9.53], [47.18, 9.18], [47.25, 9.15], [47.5, 9.25], [47.75, 9.15], [48.0, 9.25], [48.53, 9.03], [48.68, 8.68], [49.03, 8.53], [49.18, 8.18], [49.53, 8.03], [49.75, 7.5], [49.65, 7.25], [49.75, 7.0], [49.53, 6.47], [49.0, 6.25], [48.75, 6.35], [48.5, 6.25], [48.25, 6.35], [48.0, 6.25], [47.75, 6.35], [47.5, 6.25], [47.25, 6.35], [47.0, 6.25], [46.75, 6.35], [46.5, 6.25], [45.97, 6.47], [45.82, 6.82], [45.47, 6.97], [45.25, 7.5], [45.35, 7.75], [45.25, 8.0], [45.35, 8.25], [45.32, 8.32], [45.25, 8.35], [45.18, 8.32], [45.03, 7.97], [44.5, 7.75], [43.97, 7.97], [43.75, 8.5], [43.85, 8.75], [43.75, 9.0], [43.97, 9.53]]]]}, "2019-11-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.97, 9.53], [44.32, 9.68], [44.47, 10.03], [45.0, 10.25], [45.25, 10.15], [45.5, 10.25], [46.03, 10.03], [46.25, 9.5], [46.03, 8.97], [45.68, 8.82], [45.53, 8.47], [45.18, 8.32], [45.03, 7.97], [44.5, 7.75], [43.97, 7.97], [43.75, 8.5], [43.85, 8.75], [43.75, 9.0], [43.97, 9.53]]]]}, "2019-11-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.0, 10.25], [45.53, 10.03], [45.75, 9.5], [45.53, 8.97], [45.0, 8.75], [44.47, 8.97], [44.25, 9.5], [44.47, 10.03], [45.0, 10.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.9622028107676783}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.780203166619007}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.078774424888707, 22.815934149425175, 22.66927513424514, 22.559806736049097, 22.741692757704755, 20.668076091447006, 20.095828108052444]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.06358542228179, 19.74789696516467, 19.72808413132981, 19.50728533888224, 19.28877264264628, 20.07322115662555, 20.095828108052444]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5379681707149158, -1.8933056180811267, -1.820173336174592, -1.866124384266244, -1.676279468059688, -1.2684962326763298, -1.2390208102293059]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9626580191994663, -2.9622028107676783, -2.738580340429735, -2.7193247280574724, -2.1552361965613613, -1.4271538208139418, -1.2390208102293059]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5160509167655132, -1.9929478827566163, -1.8746438711977242, -1.905293776800882, -1.6735824880629266, -1.3584009959160839, -1.384413211059579]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.771462787909531, -2.840474822876229, -2.646324366607707, -2.5312702192827548, -2.210149910063344, -1.4029637272282491, -1.384413211059579]}}