{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:11:42.813080", "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": "2020-Feb-24_to_2020-Mar-01_46.5_-20.0"}, "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": 2020020002450}, "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": "February 24 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 01 2020"}, "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": "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": 64045.33131633712}, "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": ["Madagascar"]}, "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": -20.0}, "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": 46.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "46.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 44.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 47.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -21.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -17.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[44.854, -19.25], [44.823, -19.177], [44.75, -19.146], [44.5, -19.25], [43.97, -19.03], [43.823, -18.677], [43.47, -18.53], [43.25, -18.0], [43.354, -17.75], [43.25, -17.5], [43.47, -16.97], [43.823, -16.823], [43.97, -16.47], [44.5, -16.25], [45.03, -16.47], [45.25, -17.0], [45.03, -17.53], [44.677, -17.677], [44.646, -17.749], [44.646, -17.75], [44.677, -17.823], [44.749, -17.854], [44.75, -17.854], [45.0, -17.75], [45.53, -17.97], [45.677, -18.323], [45.75, -18.354], [46.0, -18.25], [46.53, -18.47], [46.677, -18.823], [46.75, -18.854], [46.751, -18.854], [47.0, -18.75], [47.53, -18.97], [47.75, -19.5], [47.53, -20.03], [47.177, -20.177], [47.03, -20.53], [46.677, -20.677], [46.53, -21.03], [46.177, -21.177], [46.03, -21.53], [45.5, -21.75], [45.25, -21.646], [45.0, -21.75], [44.75, -21.646], [44.5, -21.75], [44.25, -21.646], [44.0, -21.75], [43.47, -21.53], [43.25, -21.0], [43.47, -20.47], [43.823, -20.323], [43.97, -19.97], [44.5, -19.75], [44.75, -19.854], [44.823, -19.823], [44.853, -19.75], [44.75, -19.5], [44.854, -19.25]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Madagascar"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-02-24T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[45.75, -20.0], [45.96966991411009, -19.46966991411009], [46.5, -19.25], [47.03033008588991, -19.46966991411009], [47.25, -20.0], [47.03033008588991, -20.53033008588991], [46.5, -20.75], [45.96966991411009, -20.53033008588991], [45.75, -20.0]]]}, "2020-02-25T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[44.85355339059328, -19.25], [44.75, -19.0], [44.96966991411009, -18.46966991411009], [45.5, -18.25], [45.75, -18.353553390593273], [46.0, -18.25], [46.53033008588991, -18.46966991411009], [46.75, -19.0], [46.64644660940672, -19.25], [46.67677669529664, -19.32322330470336], [47.03033008588991, -19.46966991411009], [47.25, -20.0], [47.03033008588991, -20.53033008588991], [46.5, -20.75], [46.25, -20.646446609406727], [46.17677669529664, -20.67677669529664], [46.03033008588991, -21.03033008588991], [45.5, -21.25], [44.96966991411009, -21.03033008588991], [44.75, -20.5], [44.95710678118655, -20.0], [44.75, -19.5], [44.85355339059328, -19.25]]]}, "2020-02-26T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[44.75, -19.146446609406727], [44.5, -19.25], [43.96966991411009, -19.03033008588991], [43.75, -18.5], [43.96966991411009, -17.96966991411009], [44.5, -17.75], [44.75, -17.853553390593273], [45.0, -17.75], [45.53033008588991, -17.96966991411009], [45.67677669529664, -18.32322330470336], [45.75, -18.353553390593273], [46.0, -18.25], [46.53033008588991, -18.46966991411009], [46.75, -19.0], [46.64644660940672, -19.25], [46.67677669529664, -19.32322330470336], [47.03033008588991, -19.46966991411009], [47.25, -20.0], [47.03033008588991, -20.53033008588991], [46.5, -20.75], [46.25, -20.646446609406727], [46.17677669529664, -20.67677669529664], [46.03033008588991, -21.03033008588991], [45.5, -21.25], [45.0, -21.04289321881345], [44.5, -21.25], [43.96966991411009, -21.03033008588991], [43.75, -20.5], [43.96966991411009, -19.96966991411009], [44.5, -19.75], [44.92677669529664, -19.92677669529664], [44.75, -19.5], [44.85355339059328, -19.25], [44.82322330470336, -19.17677669529664], [44.75, -19.146446609406727]]]}, "2020-02-27T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[43.82322330470336, -20.32322330470336], [43.96966991411009, -19.96966991411009], [44.5, -19.75], [44.75, -19.853553390593273], [44.82322330470336, -19.82322330470336], [44.85355339059328, -19.75], [44.75, -19.5], [44.85355339059328, -19.25], [44.82322330470336, -19.17677669529664], [44.75, -19.146446609406727], [44.5, -19.25], [43.96966991411009, -19.03033008588991], [43.82322330470336, -18.67677669529664], [43.46966991411009, -18.53033008588991], [43.25, -18.0], [43.46966991411009, -17.46966991411009], [44.0, -17.25], [44.53033008588991, -17.46966991411009], [44.67677669529664, -17.82322330470336], [44.75, -17.853553390593273], [45.0, -17.75], [45.53033008588991, -17.96966991411009], [45.67677669529664, -18.32322330470336], [45.75, -18.353553390593273], [46.0, -18.25], [46.53033008588991, -18.46966991411009], [46.67677669529664, -18.82322330470336], [47.03033008588991, -18.96966991411009], [47.25, -19.5], [47.14644660940672, -19.75], [47.25, -20.0], [47.03033008588991, -20.53033008588991], [46.67677669529664, -20.67677669529664], [46.53033008588991, -21.03033008588991], [46.17677669529664, -21.17677669529664], [46.03033008588991, -21.53033008588991], [45.5, -21.75], [45.25, -21.646446609406727], [45.0, -21.75], [44.75, -21.646446609406727], [44.5, -21.75], [44.25, -21.646446609406727], [44.0, -21.75], [43.46966991411009, -21.53033008588991], [43.25, -21.0], [43.46966991411009, -20.46966991411009], [43.82322330470336, -20.32322330470336]]]}, "2020-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.96966991411009, -19.96966991411009], [44.5, -19.75], [44.75, -19.853553390593273], [44.82322330470336, -19.82322330470336], [44.96966991411009, -19.46966991411009], [45.5, -19.25], [45.75, -19.353553390593273], [45.82322330470336, -19.32322330470336], [45.96966991411009, -18.96966991411009], [46.5, -18.75], [46.75, -18.853553390593273], [47.0, -18.75], [47.53033008588991, -18.96966991411009], [47.75, -19.5], [47.53033008588991, -20.03033008588991], [47.17677669529664, -20.17677669529664], [47.03033008588991, -20.53033008588991], [46.67677669529664, -20.67677669529664], [46.53033008588991, -21.03033008588991], [46.17677669529664, -21.17677669529664], [46.03033008588991, -21.53033008588991], [45.5, -21.75], [45.25, -21.646446609406727], [45.0, -21.75], [44.75, -21.646446609406727], [44.5, -21.75], [44.25, -21.646446609406727], [44.0, -21.75], [43.46966991411009, -21.53033008588991], [43.25, -21.0], [43.46966991411009, -20.46966991411009], [43.82322330470336, -20.32322330470336], [43.96966991411009, -19.96966991411009]]], [[[43.25, -17.5], [43.46966991411009, -16.96966991411009], [43.82322330470336, -16.82322330470336], [43.96966991411009, -16.46966991411009], [44.5, -16.25], [45.03033008588991, -16.46966991411009], [45.25, -17.0], [45.03033008588991, -17.53033008588991], [44.67677669529664, -17.67677669529664], [44.64644660940672, -17.75], [44.67677669529664, -17.82322330470336], [44.75, -17.853553390593273], [45.0, -17.75], [45.53033008588991, -17.96966991411009], [45.75, -18.5], [45.53033008588991, -19.03033008588991], [45.0, -19.25], [44.75, -19.146446609406727], [44.5, -19.25], [43.96966991411009, -19.03033008588991], [43.82322330470336, -18.67677669529664], [43.46966991411009, -18.53033008588991], [43.25, -18.0], [43.35355339059328, -17.75], [43.25, -17.5]]]]}, "2020-02-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.96966991411009, -19.96966991411009], [44.5, -19.75], [44.75, -19.853553390593273], [44.82322330470336, -19.82322330470336], [44.96966991411009, -19.46966991411009], [45.5, -19.25], [45.75, -19.353553390593273], [45.82322330470336, -19.32322330470336], [45.96966991411009, -18.96966991411009], [46.5, -18.75], [46.75, -18.853553390593273], [47.0, -18.75], [47.53033008588991, -18.96966991411009], [47.75, -19.5], [47.53033008588991, -20.03033008588991], [47.17677669529664, -20.17677669529664], [47.03033008588991, -20.53033008588991], [46.67677669529664, -20.67677669529664], [46.53033008588991, -21.03033008588991], [46.17677669529664, -21.17677669529664], [46.03033008588991, -21.53033008588991], [45.5, -21.75], [45.25, -21.646446609406727], [45.0, -21.75], [44.75, -21.646446609406727], [44.5, -21.75], [44.25, -21.646446609406727], [44.0, -21.75], [43.46966991411009, -21.53033008588991], [43.25, -21.0], [43.46966991411009, -20.46966991411009], [43.82322330470336, -20.32322330470336], [43.96966991411009, -19.96966991411009]]], [[[43.25, -17.5], [43.46966991411009, -16.96966991411009], [43.82322330470336, -16.82322330470336], [43.96966991411009, -16.46966991411009], [44.5, -16.25], [45.03033008588991, -16.46966991411009], [45.25, -17.0], [45.03033008588991, -17.53033008588991], [44.67677669529664, -17.67677669529664], [44.64644660940672, -17.75], [44.69822330470336, -17.875], [45.0, -17.75], [45.53033008588991, -17.96966991411009], [45.75, -18.5], [45.53033008588991, -19.03033008588991], [45.0, -19.25], [44.46966991411009, -19.03033008588991], [44.30177669529664, -18.625], [44.0, -18.75], [43.46966991411009, -18.53033008588991], [43.25, -18.0], [43.35355339059328, -17.75], [43.25, -17.5]]]]}, "2020-03-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.96966991411009, -19.96966991411009], [44.5, -19.75], [44.75, -19.853553390593273], [44.82322330470336, -19.82322330470336], [44.96966991411009, -19.46966991411009], [45.5, -19.25], [46.03033008588991, -19.46966991411009], [46.25, -20.0], [46.14644660940672, -20.25], [46.25, -20.5], [46.03033008588991, -21.03033008588991], [45.5, -21.25], [45.25, -21.146446609406727], [45.17677669529664, -21.17677669529664], [45.03033008588991, -21.53033008588991], [44.5, -21.75], [44.25, -21.646446609406727], [44.0, -21.75], [43.46966991411009, -21.53033008588991], [43.25, -21.0], [43.46966991411009, -20.46966991411009], [43.82322330470336, -20.32322330470336], [43.96966991411009, -19.96966991411009]]], [[[47.0, -20.25], [46.46966991411009, -20.03033008588991], [46.25, -19.5], [46.46966991411009, -18.96966991411009], [47.0, -18.75], [47.53033008588991, -18.96966991411009], [47.75, -19.5], [47.53033008588991, -20.03033008588991], [47.0, -20.25]]], [[[43.46966991411009, -16.96966991411009], [43.82322330470336, -16.82322330470336], [43.96966991411009, -16.46966991411009], [44.5, -16.25], [45.03033008588991, -16.46966991411009], [45.25, -17.0], [45.03033008588991, -17.53033008588991], [44.67677669529664, -17.67677669529664], [44.64644660940672, -17.75], [44.75, -18.0], [44.53033008588991, -18.53033008588991], [44.0, -18.75], [43.46966991411009, -18.53033008588991], [43.25, -18.0], [43.35355339059328, -17.75], [43.25, -17.5], [43.46966991411009, -16.96966991411009]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.8360870065037034}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.198700593022487}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.613541477002002, 25.820083742587883, 26.197468697853253, 26.733391571410777, 26.633328929344827, 26.62093155290256, 27.476184666034158]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.613541477002002, 27.80695664386309, 28.377986049834078, 28.82955779117725, 28.809217334614743, 29.024118680035542, 29.22191300726405]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.105118659684024, 1.4500010480465935, 1.1444349386124486, 1.2230499774522239, 1.1292828123870196, 1.1559176337900146, 1.2378333276720412]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.105118659684024, 1.8360870065037034, 1.3666846819378975, 1.540028902401616, 1.707338796997817, 1.43457253281764, 1.4779898095453632]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3517126201185008, 1.8180031811487738, 1.4407755670422175, 1.56099137656424, 1.5191662716350913, 1.5403421055420747, 1.5691798762128153]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3517126201185008, 2.291126686156845, 1.8285975259768465, 1.8611545313719775, 2.1495695829030246, 2.075202479945961, 2.047927160127565]}}