{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-05-20 10:52:23.036293", "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": "2026-Mar-11_to_2026-Mar-20_11.5_9.5"}, "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": 2026030001670}, "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": "March 11 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 20 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 10}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 173328.68005077326}, "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": ["Cameroon", "Nigeria"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "Western-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": 9.5}, "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": 11.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "11.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 7.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 14.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 7.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 13.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-03-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.5, 7.75], [10.97, 7.97], [10.75, 8.5], [10.97, 9.03], [11.5, 9.25], [12.03, 9.03], [12.25, 8.5], [12.03, 7.97], [11.5, 7.75]]], [[[11.47, 11.53], [12.0, 11.75], [12.53, 11.53], [12.75, 11.0], [12.53, 10.47], [12.18, 10.32], [12.15, 10.25], [12.25, 10.0], [12.03, 9.47], [11.5, 9.25], [10.97, 9.47], [10.75, 10.0], [10.85, 10.25], [10.75, 10.5], [10.97, 11.03], [11.32, 11.18], [11.47, 11.53]]], [[[12.75, 10.5], [12.97, 11.03], [13.5, 11.25], [14.03, 11.03], [14.25, 10.5], [14.03, 9.97], [13.5, 9.75], [12.97, 9.97], [12.75, 10.5]]], [[[9.47, 11.53], [10.0, 11.75], [10.53, 11.53], [10.75, 11.0], [10.53, 10.47], [10.0, 10.25], [9.47, 10.47], [9.25, 11.0], [9.47, 11.53]]], [[[9.15, 12.25], [9.25, 12.0], [9.03, 11.47], [8.5, 11.25], [8.25, 11.35], [8.0, 11.25], [7.47, 11.47], [7.25, 12.0], [7.47, 12.53], [7.82, 12.68], [7.97, 13.03], [8.5, 13.25], [9.03, 13.03], [9.25, 12.5], [9.15, 12.25]]]]}, "2026-03-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[7.47, 12.53], [7.82, 12.68], [7.85, 12.75], [7.75, 13.0], [7.97, 13.53], [8.5, 13.75], [9.03, 13.53], [9.25, 13.0], [9.15, 12.75], [9.25, 12.5], [9.15, 12.25], [9.2, 12.13], [9.5, 12.25], [10.03, 12.03], [10.18, 11.68], [10.25, 11.65], [10.32, 11.68], [10.35, 11.75], [10.25, 12.0], [10.47, 12.53], [11.0, 12.75], [11.53, 12.53], [11.75, 12.0], [11.65, 11.75], [11.7, 11.63], [12.0, 11.75], [12.25, 11.65], [12.5, 11.75], [13.03, 11.53], [13.18, 11.18], [13.25, 11.15], [13.5, 11.25], [14.03, 11.03], [14.25, 10.5], [14.15, 10.25], [14.25, 10.0], [14.03, 9.47], [13.5, 9.25], [13.0, 9.46], [12.68, 9.32], [12.65, 9.25], [12.75, 9.0], [12.53, 8.47], [12.18, 8.32], [12.03, 7.97], [11.68, 7.82], [11.53, 7.47], [11.0, 7.25], [10.47, 7.47], [10.25, 8.0], [10.35, 8.25], [10.32, 8.32], [10.25, 8.35], [10.0, 8.25], [9.47, 8.47], [9.25, 9.0], [9.35, 9.25], [9.25, 9.5], [9.35, 9.75], [9.32, 9.82], [9.25, 9.85], [9.18, 9.82], [9.03, 9.47], [8.5, 9.25], [7.97, 9.47], [7.75, 10.0], [7.85, 10.25], [7.75, 10.5], [7.85, 10.75], [7.82, 10.82], [7.47, 10.97], [7.25, 11.5], [7.35, 11.75], [7.25, 12.0], [7.47, 12.53]]]]}, "2026-03-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[7.47, 12.53], [7.82, 12.68], [7.85, 12.75], [7.75, 13.0], [7.97, 13.53], [8.5, 13.75], [9.03, 13.53], [9.25, 13.0], [9.15, 12.75], [9.18, 12.68], [9.25, 12.65], [9.5, 12.75], [10.03, 12.53], [10.18, 12.18], [10.3, 12.13], [10.47, 12.53], [11.0, 12.75], [11.53, 12.53], [11.75, 12.0], [11.65, 11.75], [11.7, 11.63], [12.0, 11.75], [12.25, 11.65], [12.5, 11.75], [13.03, 11.53], [13.18, 11.18], [13.25, 11.15], [13.5, 11.25], [13.75, 11.15], [14.0, 11.25], [14.53, 11.03], [14.75, 10.5], [14.53, 9.97], [14.18, 9.82], [14.15, 9.75], [14.25, 9.5], [14.03, 8.97], [13.5, 8.75], [13.25, 8.85], [13.0, 8.75], [12.75, 8.85], [12.68, 8.82], [12.53, 8.47], [12.18, 8.32], [12.03, 7.97], [11.68, 7.82], [11.53, 7.47], [11.0, 7.25], [10.47, 7.47], [10.25, 8.0], [10.35, 8.25], [10.32, 8.32], [10.25, 8.35], [10.0, 8.25], [9.47, 8.47], [9.25, 9.0], [9.35, 9.25], [9.25, 9.5], [9.35, 9.75], [9.32, 9.82], [9.25, 9.85], [9.18, 9.82], [9.03, 9.47], [8.5, 9.25], [7.97, 9.47], [7.75, 10.0], [7.85, 10.25], [7.75, 10.5], [7.85, 10.75], [7.82, 10.82], [7.47, 10.97], [7.25, 11.5], [7.35, 11.75], [7.25, 12.0], [7.47, 12.53]]]]}, "2026-03-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[7.47, 12.53], [7.82, 12.68], [7.85, 12.75], [7.75, 13.0], [7.97, 13.53], [8.5, 13.75], [9.03, 13.53], [9.25, 13.0], [9.15, 12.75], [9.18, 12.68], [9.25, 12.65], [9.5, 12.75], [10.03, 12.53], [10.18, 12.18], [10.3, 12.13], [10.47, 12.53], [11.0, 12.75], [11.53, 12.53], [11.75, 12.0], [11.65, 11.75], [11.7, 11.63], [12.0, 11.75], [12.25, 11.65], [12.5, 11.75], [13.03, 11.53], [13.18, 11.18], [13.25, 11.15], [13.5, 11.25], [13.75, 11.15], [14.0, 11.25], [14.53, 11.03], [14.75, 10.5], [14.53, 9.97], [14.18, 9.82], [14.15, 9.75], [14.18, 9.68], [14.53, 9.53], [14.75, 9.0], [14.65, 8.75], [14.75, 8.5], [14.53, 7.97], [14.0, 7.75], [13.47, 7.97], [13.25, 8.5], [13.35, 8.75], [13.32, 8.82], [13.25, 8.85], [13.0, 8.75], [12.75, 8.85], [12.68, 8.82], [12.65, 8.75], [12.75, 8.5], [12.53, 7.97], [12.0, 7.75], [11.7, 7.88], [11.53, 7.47], [11.0, 7.25], [10.47, 7.47], [10.25, 8.0], [10.35, 8.25], [10.32, 8.32], [10.25, 8.35], [10.0, 8.25], [9.47, 8.47], [9.25, 9.0], [9.35, 9.25], [9.25, 9.5], [9.35, 9.75], [9.32, 9.82], [9.25, 9.85], [9.18, 9.82], [9.03, 9.47], [8.5, 9.25], [7.97, 9.47], [7.75, 10.0], [7.85, 10.25], [7.75, 10.5], [7.85, 10.75], [7.82, 10.82], [7.47, 10.97], [7.25, 11.5], [7.35, 11.75], [7.25, 12.0], [7.47, 12.53]]]]}, "2026-03-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[7.25, 12.0], [7.47, 12.53], [7.82, 12.68], [7.97, 13.03], [8.5, 13.25], [9.03, 13.03], [9.18, 12.68], [9.25, 12.65], [9.5, 12.75], [10.03, 12.53], [10.18, 12.18], [10.53, 12.03], [10.68, 11.68], [11.03, 11.53], [11.2, 11.13], [11.32, 11.18], [11.47, 11.53], [12.0, 11.75], [12.53, 11.53], [12.75, 11.0], [12.54, 10.5], [12.68, 10.18], [12.75, 10.15], [12.82, 10.18], [12.85, 10.25], [12.75, 10.5], [12.97, 11.03], [13.5, 11.25], [13.75, 11.15], [14.0, 11.25], [14.53, 11.03], [14.75, 10.5], [14.53, 9.97], [14.18, 9.82], [14.15, 9.75], [14.18, 9.68], [14.53, 9.53], [14.75, 9.0], [14.65, 8.75], [14.75, 8.5], [14.53, 7.97], [14.0, 7.75], [13.47, 7.97], [13.25, 8.5], [13.35, 8.75], [13.32, 8.82], [13.25, 8.85], [13.0, 8.75], [12.75, 8.85], [12.68, 8.82], [12.65, 8.75], [12.75, 8.5], [12.53, 7.97], [12.0, 7.75], [11.7, 7.88], [11.53, 7.47], [11.0, 7.25], [10.47, 7.47], [10.25, 8.0], [10.35, 8.25], [10.32, 8.32], [9.97, 8.47], [9.82, 8.82], [9.47, 8.97], [9.25, 9.5], [9.35, 9.75], [9.32, 9.82], [9.25, 9.85], [9.18, 9.82], [9.03, 9.47], [8.5, 9.25], [7.97, 9.47], [7.75, 10.0], [7.97, 10.53], [8.32, 10.68], [8.38, 10.8], [7.97, 10.97], [7.82, 11.32], [7.47, 11.47], [7.25, 12.0]]]]}, "2026-03-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.47, 10.03], [10.0, 10.25], [10.25, 10.15], [10.32, 10.18], [10.47, 10.53], [10.82, 10.68], [10.97, 11.03], [11.32, 11.18], [11.47, 11.53], [12.0, 11.75], [12.53, 11.53], [12.75, 11.0], [12.54, 10.5], [12.68, 10.18], [12.75, 10.15], [12.82, 10.18], [12.85, 10.25], [12.75, 10.5], [12.97, 11.03], [13.5, 11.25], [13.75, 11.15], [14.0, 11.25], [14.53, 11.03], [14.75, 10.5], [14.53, 9.97], [14.18, 9.82], [14.15, 9.75], [14.18, 9.68], [14.53, 9.53], [14.75, 9.0], [14.65, 8.75], [14.75, 8.5], [14.53, 7.97], [14.0, 7.75], [13.47, 7.97], [13.32, 8.32], [12.97, 8.47], [12.82, 8.82], [12.75, 8.85], [12.68, 8.82], [12.65, 8.75], [12.75, 8.5], [12.53, 7.97], [12.0, 7.75], [11.7, 7.88], [11.53, 7.47], [11.0, 7.25], [10.47, 7.47], [10.25, 8.0], [10.35, 8.25], [10.32, 8.32], [9.97, 8.47], [9.82, 8.82], [9.47, 8.97], [9.25, 9.5], [9.47, 10.03]]], [[[8.5, 13.25], [9.03, 13.03], [9.25, 12.5], [9.15, 12.25], [9.25, 12.0], [9.03, 11.47], [8.5, 11.25], [7.97, 11.47], [7.75, 12.0], [7.85, 12.25], [7.75, 12.5], [7.97, 13.03], [8.5, 13.25]]]]}, "2026-03-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.47, 8.97], [9.25, 9.5], [9.47, 10.03], [10.0, 10.25], [10.25, 10.15], [10.5, 10.25], [10.75, 10.15], [10.82, 10.18], [10.97, 10.53], [11.5, 10.75], [12.03, 10.53], [12.18, 10.18], [12.25, 10.15], [12.5, 10.25], [12.75, 10.15], [13.0, 10.25], [13.53, 10.03], [13.68, 9.68], [14.03, 9.53], [14.18, 9.18], [14.53, 9.03], [14.75, 8.5], [14.53, 7.97], [14.0, 7.75], [13.47, 7.97], [13.32, 8.32], [12.97, 8.47], [12.82, 8.82], [12.75, 8.85], [12.68, 8.82], [12.53, 8.47], [12.0, 8.25], [11.75, 8.35], [11.5, 8.25], [10.97, 8.47], [10.82, 8.82], [10.75, 8.85], [10.5, 8.75], [10.25, 8.85], [10.0, 8.75], [9.47, 8.97]]]]}, "2026-03-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.47, 8.97], [9.25, 9.5], [9.47, 10.03], [10.0, 10.25], [10.25, 10.15], [10.5, 10.25], [10.75, 10.15], [10.82, 10.18], [10.97, 10.53], [11.5, 10.75], [12.03, 10.53], [12.18, 10.18], [12.25, 10.15], [12.5, 10.25], [12.75, 10.15], [13.0, 10.25], [13.53, 10.03], [13.68, 9.68], [14.03, 9.53], [14.25, 9.0], [14.03, 8.47], [13.5, 8.25], [12.97, 8.47], [12.82, 8.82], [12.75, 8.85], [12.68, 8.82], [12.53, 8.47], [12.0, 8.25], [11.75, 8.35], [11.68, 8.32], [11.53, 7.97], [11.0, 7.75], [10.47, 7.97], [10.25, 8.5], [10.38, 8.8], [10.25, 8.85], [10.0, 8.75], [9.47, 8.97]]]]}, "2026-03-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.75, 9.5], [10.97, 10.03], [11.5, 10.25], [12.03, 10.03], [12.25, 9.5], [12.15, 9.25], [12.25, 9.0], [12.03, 8.47], [11.68, 8.32], [11.53, 7.97], [11.0, 7.75], [10.47, 7.97], [10.25, 8.5], [10.47, 9.03], [10.82, 9.18], [10.85, 9.25], [10.75, 9.5]]]]}, "2026-03-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.0, 9.25], [11.53, 9.03], [11.75, 8.5], [11.53, 7.97], [11.0, 7.75], [10.47, 7.97], [10.25, 8.5], [10.47, 9.03], [11.0, 9.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.93465142473417}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.626520994914256}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [31.272223550302044, 32.19913174664532, 32.70235993967117, 32.66958960330845, 32.551098217227604, 33.59805541265587, 33.651360660129114, 33.81540790134005, 33.56921412150069, 33.64021708170577]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [33.09618911743166, 35.19854761759444, 35.45961659749349, 35.392811075846396, 35.150395965576195, 35.452998097737634, 34.65541610717776, 34.97616093953451, 33.91621932983401, 33.64021708170577]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.6488029733515392, 2.6866169045476114, 2.9912581625547077, 2.7832126493986578, 2.3954049384405356, 2.482436178155045, 1.9928818490614286, 2.0834295356986794, 1.9143178674734145, 1.5400662017155469]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.2407541851927135, 3.6997309127395397, 4.93465142473417, 4.188885398913271, 3.301862189883991, 3.578291582486486, 2.357140810984106, 2.697764241951802, 2.12857823216666, 1.5400662017155469]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3199934876565902, 1.5403352321513182, 1.7347858094989146, 1.694414620181658, 1.5226091603489016, 1.6519400020852442, 1.3219086698678377, 1.3861059179138344, 1.3246693725233911, 1.0665802894929306]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4879654458847458, 1.9443079229632592, 2.388033947110589, 2.2353437459942356, 2.1444119104977704, 2.2583737813787805, 1.5372699509145098, 1.8287723569387515, 1.4493641611769996, 1.0665802894929306]}}