{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:04.839005", "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-Jul-23_to_2019-Jul-29_47.5_3.5"}, "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": 2019070000830}, "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 23 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 29 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": 217806.36584825045}, "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": ["Equatorial.Indian-Ocean", "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": ["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": 3.5}, "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": 44.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 50.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 3.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 11.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-07-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.5, 4.25], [48.03, 4.03], [48.25, 3.5], [48.03, 2.97], [47.5, 2.75], [46.97, 2.97], [46.75, 3.5], [46.97, 4.03], [47.5, 4.25]]]]}, "2019-07-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.35, 5.75], [44.25, 6.0], [44.47, 6.53], [44.82, 6.68], [44.97, 7.03], [45.5, 7.25], [45.75, 7.15], [45.82, 7.18], [45.97, 7.53], [46.32, 7.68], [46.47, 8.03], [46.82, 8.18], [46.97, 8.53], [47.5, 8.75], [47.75, 8.65], [47.82, 8.68], [47.97, 9.03], [48.32, 9.18], [48.47, 9.53], [48.88, 9.7], [48.75, 10.0], [48.97, 10.53], [49.5, 10.75], [50.03, 10.53], [50.25, 10.0], [50.03, 9.47], [49.63, 9.3], [49.75, 9.0], [49.65, 8.75], [49.75, 8.5], [49.65, 8.25], [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], [49.03, 5.97], [48.68, 5.82], [48.53, 5.47], [48.18, 5.32], [48.03, 4.97], [47.68, 4.82], [47.65, 4.75], [47.75, 4.5], [47.63, 4.2], [47.75, 4.15], [48.0, 4.25], [48.53, 4.03], [48.75, 3.5], [48.53, 2.97], [48.0, 2.75], [47.75, 2.85], [47.5, 2.75], [46.97, 2.97], [46.75, 3.5], [46.88, 3.8], [46.75, 3.85], [46.5, 3.75], [46.25, 3.85], [46.0, 3.75], [45.75, 3.85], [45.5, 3.75], [44.97, 3.97], [44.82, 4.32], [44.47, 4.47], [44.25, 5.0], [44.35, 5.25], [44.25, 5.5], [44.35, 5.75]]]]}, "2019-07-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.35, 5.25], [44.25, 5.5], [44.35, 5.75], [44.25, 6.0], [44.35, 6.25], [44.25, 6.5], [44.47, 7.03], [45.0, 7.25], [45.25, 7.15], [45.32, 7.18], [45.47, 7.53], [45.82, 7.68], [45.97, 8.03], [46.32, 8.18], [46.47, 8.53], [46.82, 8.68], [46.85, 8.75], [46.75, 9.0], [46.97, 9.53], [47.5, 9.75], [47.75, 9.65], [47.82, 9.68], [47.85, 9.75], [47.75, 10.0], [47.97, 10.53], [48.5, 10.75], [48.75, 10.65], [49.0, 10.75], [49.25, 10.65], [49.32, 10.68], [49.35, 10.75], [49.25, 11.0], [49.47, 11.53], [50.0, 11.75], [50.53, 11.53], [50.75, 11.0], [50.65, 10.75], [50.75, 10.5], [50.65, 10.25], [50.75, 10.0], [50.53, 9.47], [50.18, 9.32], [50.03, 8.97], [49.68, 8.82], [49.65, 8.75], [49.75, 8.5], [49.65, 8.25], [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], [49.03, 5.97], [48.68, 5.82], [48.65, 5.75], [48.75, 5.5], [48.65, 5.25], [48.75, 5.0], [48.54, 4.5], [48.68, 4.18], [49.03, 4.03], [49.25, 3.5], [49.03, 2.97], [48.5, 2.75], [48.25, 2.85], [48.0, 2.75], [47.75, 2.85], [47.5, 2.75], [46.97, 2.97], [46.75, 3.5], [46.85, 3.75], [46.82, 3.82], [46.75, 3.85], [46.5, 3.75], [46.25, 3.85], [46.0, 3.75], [45.75, 3.85], [45.5, 3.75], [45.25, 3.85], [45.0, 3.75], [44.47, 3.97], [44.25, 4.5], [44.35, 4.75], [44.25, 5.0], [44.35, 5.25]]]]}, "2019-07-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.35, 5.25], [44.25, 5.5], [44.35, 5.75], [44.25, 6.0], [44.35, 6.25], [44.25, 6.5], [44.47, 7.03], [45.0, 7.25], [45.25, 7.15], [45.32, 7.18], [45.47, 7.53], [45.82, 7.68], [45.97, 8.03], [46.32, 8.18], [46.47, 8.53], [46.82, 8.68], [46.85, 8.75], [46.75, 9.0], [46.97, 9.53], [47.5, 9.75], [47.75, 9.65], [47.82, 9.68], [47.85, 9.75], [47.75, 10.0], [47.97, 10.53], [48.5, 10.75], [48.75, 10.65], [49.0, 10.75], [49.25, 10.65], [49.32, 10.68], [49.35, 10.75], [49.25, 11.0], [49.47, 11.53], [50.0, 11.75], [50.53, 11.53], [50.75, 11.0], [50.65, 10.75], [50.75, 10.5], [50.65, 10.25], [50.75, 10.0], [50.53, 9.47], [50.18, 9.32], [50.03, 8.97], [49.68, 8.82], [49.65, 8.75], [49.75, 8.5], [49.65, 8.25], [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], [49.03, 5.97], [48.68, 5.82], [48.65, 5.75], [48.75, 5.5], [48.65, 5.25], [48.75, 5.0], [48.54, 4.5], [48.68, 4.18], [49.03, 4.03], [49.25, 3.5], [49.03, 2.97], [48.5, 2.75], [48.25, 2.85], [48.0, 2.75], [47.75, 2.85], [47.5, 2.75], [46.97, 2.97], [46.75, 3.5], [46.85, 3.75], [46.82, 3.82], [46.75, 3.85], [46.5, 3.75], [46.25, 3.85], [46.0, 3.75], [45.75, 3.85], [45.5, 3.75], [45.25, 3.85], [45.0, 3.75], [44.47, 3.97], [44.25, 4.5], [44.35, 4.75], [44.25, 5.0], [44.35, 5.25]]]]}, "2019-07-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.35, 5.25], [44.25, 5.5], [44.35, 5.75], [44.25, 6.0], [44.35, 6.25], [44.25, 6.5], [44.47, 7.03], [45.0, 7.25], [45.25, 7.15], [45.32, 7.18], [45.47, 7.53], [45.82, 7.68], [45.97, 8.03], [46.32, 8.18], [46.47, 8.53], [46.82, 8.68], [46.85, 8.75], [46.75, 9.0], [46.97, 9.53], [47.5, 9.75], [47.75, 9.65], [47.82, 9.68], [47.85, 9.75], [47.75, 10.0], [47.97, 10.53], [48.5, 10.75], [48.75, 10.65], [49.0, 10.75], [49.25, 10.65], [49.32, 10.68], [49.35, 10.75], [49.25, 11.0], [49.47, 11.53], [50.0, 11.75], [50.53, 11.53], [50.75, 11.0], [50.65, 10.75], [50.75, 10.5], [50.65, 10.25], [50.75, 10.0], [50.53, 9.47], [50.18, 9.32], [50.03, 8.97], [49.68, 8.82], [49.65, 8.75], [49.75, 8.5], [49.53, 7.97], [49.18, 7.82], [49.03, 7.47], [48.68, 7.32], [48.53, 6.97], [48.18, 6.82], [48.03, 6.47], [47.63, 6.3], [47.7, 6.12], [48.0, 6.25], [48.53, 6.03], [48.75, 5.5], [48.65, 5.25], [48.75, 5.0], [48.54, 4.5], [48.68, 4.18], [49.03, 4.03], [49.25, 3.5], [49.03, 2.97], [48.5, 2.75], [48.25, 2.85], [48.0, 2.75], [47.75, 2.85], [47.5, 2.75], [46.97, 2.97], [46.75, 3.5], [46.85, 3.75], [46.8, 3.88], [46.5, 3.75], [46.0, 3.96], [45.5, 3.75], [45.25, 3.85], [45.0, 3.75], [44.47, 3.97], [44.25, 4.5], [44.35, 4.75], [44.25, 5.0], [44.35, 5.25]], [[47.3, 4.88], [47.18, 4.82], [47.15, 4.75], [47.2, 4.62], [47.38, 4.7], [47.3, 4.88]]]]}, "2019-07-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.0, 4.75], [48.53, 4.53], [48.75, 4.0], [48.65, 3.75], [48.75, 3.5], [48.53, 2.97], [48.0, 2.75], [47.75, 2.85], [47.5, 2.75], [46.97, 2.97], [46.75, 3.5], [46.97, 4.03], [47.32, 4.18], [47.47, 4.53], [48.0, 4.75]]]]}, "2019-07-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.5, 4.25], [48.03, 4.03], [48.25, 3.5], [48.03, 2.97], [47.5, 2.75], [46.97, 2.97], [46.75, 3.5], [46.97, 4.03], [47.5, 4.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.113523128478505}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5803374814576387}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.697642946466658, 26.095592149870185, 25.327568593404578, 24.85432028690599, 25.64020595163248, 23.8010066408159, 23.627401764447768]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.697642946466658, 23.482011368218707, 22.59832419512253, 22.672749273435727, 23.040932147339788, 23.570999624018043, 23.627401764447768]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.8158187535853472, -1.1168778337586975, -1.6576402352084292, -2.153132383480931, -1.221092322506099, -0.8965797156666326, -0.9622330965300421]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.8158187535853472, -1.4492663802021752, -2.771528520541949, -3.113523128478505, -2.216456445687186, -1.0115692058481045, -0.9622330965300421]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4386079807526533, -1.592008195232168, -2.2858166064767382, -2.9461568043916984, -1.6088926137759163, -1.5325326553826495, -1.6850387985946562]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4386079807526533, -2.05118576693534, -3.838777904552868, -4.210762702729643, -2.807466343959873, -1.7958715883936607, -1.6850387985946562]}}