{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:17:45.207198", "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-Jul-31_to_2020-Aug-06_277.0_30.5"}, "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": 2020070003533}, "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 31 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 06 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": 66491.8211715498}, "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": ["United States"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America"]}, "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": 30.5}, "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": 277.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "277.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 275.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 279.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 29.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 33.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-85.75, 30.5], [-85.53, 31.03], [-85.0, 31.25], [-84.5, 31.043], [-84.177, 31.177], [-84.03, 31.53], [-83.677, 31.677], [-83.53, 32.03], [-83.177, 32.177], [-83.03, 32.53], [-82.5, 32.75], [-82.251, 32.646], [-82.25, 32.646], [-82.177, 32.677], [-82.03, 33.03], [-81.677, 33.177], [-81.53, 33.53], [-81.0, 33.75], [-80.47, 33.53], [-80.25, 33.0], [-80.47, 32.47], [-80.823, 32.323], [-80.97, 31.97], [-81.323, 31.823], [-81.457, 31.5], [-81.25, 31.0], [-81.47, 30.47], [-82.0, 30.25], [-82.249, 30.354], [-82.25, 30.354], [-82.323, 30.323], [-82.354, 30.25], [-82.323, 30.177], [-81.97, 30.03], [-81.75, 29.5], [-81.97, 28.97], [-82.5, 28.75], [-82.75, 28.854], [-83.0, 28.75], [-83.25, 28.854], [-83.5, 28.75], [-83.75, 28.854], [-83.751, 28.854], [-84.0, 28.75], [-84.249, 28.854], [-84.25, 28.854], [-84.5, 28.75], [-84.75, 28.854], [-85.0, 28.75], [-85.53, 28.97], [-85.75, 29.5], [-85.646, 29.75], [-85.75, 30.0], [-85.646, 30.25], [-85.75, 30.5]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-07-31T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-82.625, 31.698223304703365], [-82.75, 32.0], [-82.53033008588989, 32.53033008588991], [-82.17677669529661, 32.67677669529664], [-82.03033008588989, 33.03033008588991], [-81.67677669529661, 33.17677669529664], [-81.53033008588989, 33.53033008588991], [-81.0, 33.75], [-80.46966991411011, 33.53033008588991], [-80.25, 33.0], [-80.46966991411011, 32.46966991411009], [-80.82322330470339, 32.32322330470336], [-80.96966991411011, 31.96966991411009], [-81.32322330470339, 31.82322330470336], [-81.45710678118655, 31.5], [-81.25, 31.0], [-81.46966991411011, 30.46966991411009], [-82.0, 30.25], [-82.25, 30.353553390593277], [-82.5, 30.25], [-83.03033008588989, 30.46966991411009], [-83.25, 31.0], [-83.03033008588989, 31.53033008588991], [-82.625, 31.698223304703365]]]}, "2020-08-01T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-83.64644660940672, 29.75], [-83.75, 30.0], [-83.64644660940672, 30.25], [-83.75, 30.5], [-83.64644660940672, 30.75], [-83.75, 31.0], [-83.64644660940672, 31.25], [-83.75, 31.5], [-83.53033008588989, 32.03033008588991], [-83.17677669529661, 32.17677669529664], [-83.03033008588989, 32.53033008588991], [-82.5, 32.75], [-82.25, 32.64644660940672], [-82.17677669529661, 32.67677669529664], [-82.03033008588989, 33.03033008588991], [-81.67677669529661, 33.17677669529664], [-81.53033008588989, 33.53033008588991], [-81.0, 33.75], [-80.46966991411011, 33.53033008588991], [-80.25, 33.0], [-80.46966991411011, 32.46966991411009], [-80.82322330470339, 32.32322330470336], [-80.96966991411011, 31.96966991411009], [-81.32322330470339, 31.82322330470336], [-81.45710678118655, 31.5], [-81.25, 31.0], [-81.46966991411011, 30.46966991411009], [-82.0, 30.25], [-82.25, 30.353553390593277], [-82.32322330470339, 30.32322330470336], [-82.35355339059328, 30.25], [-82.32322330470339, 30.17677669529664], [-81.96966991411011, 30.03033008588991], [-81.75, 29.5], [-81.96966991411011, 28.96966991411009], [-82.5, 28.75], [-82.75, 28.853553390593277], [-83.0, 28.75], [-83.53033008588989, 28.96966991411009], [-83.75, 29.5], [-83.64644660940672, 29.75]]]}, "2020-08-02T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-84.64644660940672, 29.75], [-84.75, 30.0], [-84.64644660940672, 30.25], [-84.75, 30.5], [-84.53033008588989, 31.03033008588991], [-84.17677669529661, 31.17677669529664], [-84.03033008588989, 31.53033008588991], [-83.67677669529661, 31.67677669529664], [-83.53033008588989, 32.03033008588991], [-83.17677669529661, 32.17677669529664], [-83.03033008588989, 32.53033008588991], [-82.5, 32.75], [-82.25, 32.64644660940672], [-82.17677669529661, 32.67677669529664], [-82.03033008588989, 33.03033008588991], [-81.67677669529661, 33.17677669529664], [-81.53033008588989, 33.53033008588991], [-81.0, 33.75], [-80.46966991411011, 33.53033008588991], [-80.25, 33.0], [-80.46966991411011, 32.46966991411009], [-80.82322330470339, 32.32322330470336], [-80.96966991411011, 31.96966991411009], [-81.32322330470339, 31.82322330470336], [-81.45710678118655, 31.5], [-81.25, 31.0], [-81.46966991411011, 30.46966991411009], [-82.0, 30.25], [-82.25, 30.353553390593277], [-82.32322330470339, 30.32322330470336], [-82.35355339059328, 30.25], [-82.32322330470339, 30.17677669529664], [-81.96966991411011, 30.03033008588991], [-81.75, 29.5], [-81.96966991411011, 28.96966991411009], [-82.5, 28.75], [-82.75, 28.853553390593277], [-83.0, 28.75], [-83.25, 28.853553390593277], [-83.5, 28.75], [-83.75, 28.853553390593277], [-84.0, 28.75], [-84.53033008588989, 28.96966991411009], [-84.75, 29.5], [-84.64644660940672, 29.75]]]}, "2020-08-03T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-85.64644660940672, 29.75], [-85.75, 30.0], [-85.64644660940672, 30.25], [-85.75, 30.5], [-85.53033008588989, 31.03033008588991], [-85.0, 31.25], [-84.5, 31.042893218813443], [-84.17677669529661, 31.17677669529664], [-84.03033008588989, 31.53033008588991], [-83.67677669529661, 31.67677669529664], [-83.53033008588989, 32.03033008588991], [-83.17677669529661, 32.17677669529664], [-83.03033008588989, 32.53033008588991], [-82.5, 32.75], [-81.96966991411011, 32.53033008588991], [-81.75, 32.0], [-81.85355339059328, 31.75], [-81.75, 31.5], [-81.85355339059328, 31.25], [-81.75, 31.0], [-81.96966991411011, 30.46966991411009], [-82.32322330470339, 30.32322330470336], [-82.35355339059328, 30.25], [-82.32322330470339, 30.17677669529664], [-81.96966991411011, 30.03033008588991], [-81.75, 29.5], [-81.96966991411011, 28.96966991411009], [-82.5, 28.75], [-82.75, 28.853553390593277], [-83.0, 28.75], [-83.25, 28.853553390593277], [-83.5, 28.75], [-83.75, 28.853553390593277], [-84.0, 28.75], [-84.25, 28.853553390593277], [-84.5, 28.75], [-84.75, 28.853553390593277], [-85.0, 28.75], [-85.53033008588989, 28.96966991411009], [-85.75, 29.5], [-85.64644660940672, 29.75]]]}, "2020-08-04T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-85.64644660940672, 29.75], [-85.75, 30.0], [-85.64644660940672, 30.25], [-85.75, 30.5], [-85.53033008588989, 31.03033008588991], [-85.0, 31.25], [-84.5, 31.042893218813443], [-84.17677669529661, 31.17677669529664], [-84.03033008588989, 31.53033008588991], [-83.5, 31.75], [-82.96966991411011, 31.53033008588991], [-82.82322330470339, 31.17677669529664], [-82.46966991411011, 31.03033008588991], [-82.25, 30.5], [-82.35355339059328, 30.25], [-82.32322330470339, 30.17677669529664], [-81.96966991411011, 30.03033008588991], [-81.75, 29.5], [-81.96966991411011, 28.96966991411009], [-82.5, 28.75], [-82.75, 28.853553390593277], [-83.0, 28.75], [-83.25, 28.853553390593277], [-83.5, 28.75], [-83.75, 28.853553390593277], [-84.0, 28.75], [-84.25, 28.853553390593277], [-84.5, 28.75], [-84.75, 28.853553390593277], [-85.0, 28.75], [-85.53033008588989, 28.96966991411009], [-85.75, 29.5], [-85.64644660940672, 29.75]]]}, "2020-08-05T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-85.64644660940672, 29.75], [-85.75, 30.0], [-85.64644660940672, 30.25], [-85.75, 30.5], [-85.53033008588989, 31.03033008588991], [-85.0, 31.25], [-84.46966991411011, 31.03033008588991], [-84.32322330470339, 30.67677669529664], [-84.25, 30.646446609406723], [-84.17677669529661, 30.67677669529664], [-84.14644660940672, 30.75], [-84.25, 31.0], [-84.03033008588989, 31.53033008588991], [-83.5, 31.75], [-82.96966991411011, 31.53033008588991], [-82.82322330470339, 31.17677669529664], [-82.46966991411011, 31.03033008588991], [-82.25, 30.5], [-82.35355339059328, 30.25], [-82.25, 30.0], [-82.46966991411011, 29.46966991411009], [-82.82322330470339, 29.32322330470336], [-82.96966991411011, 28.96966991411009], [-83.5, 28.75], [-84.0, 28.957106781186557], [-84.5, 28.75], [-84.75, 28.853553390593277], [-85.0, 28.75], [-85.53033008588989, 28.96966991411009], [-85.75, 29.5], [-85.64644660940672, 29.75]]]}, "2020-08-06T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-84.25, 30.5], [-84.03033008588989, 31.03033008588991], [-83.5, 31.25], [-82.96966991411011, 31.03033008588991], [-82.75, 30.5], [-82.96966991411011, 29.96966991411009], [-83.5, 29.75], [-84.03033008588989, 29.96966991411009], [-84.25, 30.5]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.788211640322288}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.3368270997692004}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [29.408303188891125, 30.010299761930696, 29.604561894232972, 29.358209213031728, 29.74302582256405, 29.071517392581598, 28.76262102986891]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.78017322267334, 31.18724108197756, 31.000954852912457, 30.32936359223703, 30.659775227515013, 30.004087459938717, 28.76262102986891]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.291236015757272, 2.958110839433608, 2.4654622841943223, 2.130311871470272, 2.455942463207233, 1.7223683965994592, 1.7198686329949737]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.6308005312601495, 3.788211640322288, 3.5386267895614196, 3.0313680458663157, 3.577187096550631, 2.5696113203046025, 1.7198686329949737]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3986485946875031, 1.901582133392233, 1.7024798554233744, 1.613822227485169, 1.9772584936040347, 1.432936972600172, 1.3088283832480856]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4846502760844154, 2.3861406495179986, 2.2105101784341232, 2.111263234179399, 2.69161859033998, 1.5572630320734397, 1.3088283832480856]}}