{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:22:22.371916", "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": "2021-Feb-25_to_2021-Feb-28_126.5_-9.0"}, "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": 2021020000943}, "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 25 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 28 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 64110.663926188485}, "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": ["Timor-Leste"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": ["Banda Sea", "Timor Sea"]}, "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": -9.0}, "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": 126.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "126.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 125.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 129.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -10.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -8.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[126.323, -8.323], [126.47, -7.97], [126.823, -7.823], [126.97, -7.47], [127.5, -7.25], [127.75, -7.354], [128.0, -7.25], [128.53, -7.47], [128.677, -7.823], [128.75, -7.854], [129.0, -7.75], [129.53, -7.97], [129.75, -8.5], [129.53, -9.03], [129.177, -9.177], [129.146, -9.25], [129.25, -9.5], [129.03, -10.03], [128.5, -10.25], [128.25, -10.146], [128.0, -10.25], [127.75, -10.146], [127.5, -10.25], [127.25, -10.146], [127.0, -10.25], [126.75, -10.146], [126.5, -10.25], [126.25, -10.146], [126.177, -10.177], [126.03, -10.53], [125.5, -10.75], [124.97, -10.53], [124.75, -10.0], [124.854, -9.75], [124.75, -9.5], [124.97, -8.97], [125.323, -8.823], [125.47, -8.47], [126.0, -8.25], [126.25, -8.354], [126.274, -8.344], [126.323, -8.323]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.Asia", "N.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-02-25T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[125.92677669529664, -9.426776695296633], [125.75, -9.0], [125.96966991411009, -8.469669914110089], [126.5, -8.25], [126.80177669529664, -8.374999999999998], [126.96966991411009, -7.9696699141100895], [127.5, -7.75], [127.75, -7.853553390593273], [128.0, -7.75], [128.53033008588991, -7.9696699141100895], [128.75, -8.5], [128.53033008588991, -9.030330085889911], [128.0, -9.25], [127.75, -9.146446609406727], [127.5, -9.25], [127.19822330470336, -9.125000000000002], [127.03033008588991, -9.530330085889911], [126.5, -9.75], [126.07322330470336, -9.573223304703367], [126.25, -10.0], [126.03033008588991, -10.530330085889911], [125.5, -10.75], [124.96966991411009, -10.530330085889911], [124.75, -10.0], [124.96966991411009, -9.469669914110089], [125.5, -9.25], [125.92677669529664, -9.426776695296633]]]}, "2021-02-26T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[124.85355339059328, -9.75], [124.75, -9.5], [124.96966991411009, -8.969669914110089], [125.32322330470336, -8.823223304703363], [125.46966991411009, -8.469669914110089], [126.0, -8.25], [126.25, -8.353553390593273], [126.32322330470336, -8.323223304703363], [126.46966991411009, -7.9696699141100895], [126.82322330470336, -7.8232233047033635], [126.96966991411009, -7.4696699141100895], [127.5, -7.25], [127.75, -7.353553390593273], [128.0, -7.25], [128.53033008588991, -7.4696699141100895], [128.67677669529664, -7.8232233047033635], [128.75, -7.853553390593273], [129.0, -7.75], [129.53033008588991, -7.9696699141100895], [129.75, -8.5], [129.53033008588991, -9.030330085889911], [129.17677669529664, -9.176776695296637], [129.14644660940672, -9.25], [129.25, -9.5], [129.03033008588991, -10.030330085889911], [128.5, -10.25], [128.25, -10.146446609406727], [128.0, -10.25], [127.75, -10.146446609406727], [127.5, -10.25], [127.25, -10.146446609406727], [127.0, -10.25], [126.75, -10.146446609406727], [126.5, -10.25], [126.25, -10.146446609406727], [126.17677669529664, -10.176776695296637], [126.03033008588991, -10.530330085889911], [125.5, -10.75], [124.96966991411009, -10.530330085889911], [124.75, -10.0], [124.85355339059328, -9.75]]]}, "2021-02-27T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[124.85355339059328, -9.75], [124.75, -9.5], [124.96966991411009, -8.969669914110089], [125.32322330470336, -8.823223304703363], [125.46966991411009, -8.469669914110089], [126.0, -8.25], [126.25, -8.353553390593273], [126.32322330470336, -8.323223304703363], [126.46966991411009, -7.9696699141100895], [126.82322330470336, -7.8232233047033635], [126.96966991411009, -7.4696699141100895], [127.5, -7.25], [127.75, -7.353553390593273], [128.0, -7.25], [128.53033008588991, -7.4696699141100895], [128.67677669529664, -7.8232233047033635], [128.75, -7.853553390593273], [129.0, -7.75], [129.53033008588991, -7.9696699141100895], [129.75, -8.5], [129.53033008588991, -9.030330085889911], [129.17677669529664, -9.176776695296637], [129.14644660940672, -9.25], [129.25, -9.5], [129.03033008588991, -10.030330085889911], [128.5, -10.25], [128.25, -10.146446609406727], [128.0, -10.25], [127.75, -10.146446609406727], [127.5, -10.25], [127.25, -10.146446609406727], [127.0, -10.25], [126.75, -10.146446609406727], [126.5, -10.25], [126.25, -10.146446609406727], [126.17677669529664, -10.176776695296637], [126.03033008588991, -10.530330085889911], [125.5, -10.75], [124.96966991411009, -10.530330085889911], [124.75, -10.0], [124.85355339059328, -9.75]]]}, "2021-02-28T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[125.32322330470336, -8.823223304703363], [125.46966991411009, -8.469669914110089], [126.0, -8.25], [126.25, -8.353553390593273], [126.32322330470336, -8.323223304703363], [126.46966991411009, -7.9696699141100895], [126.82322330470336, -7.8232233047033635], [126.96966991411009, -7.4696699141100895], [127.5, -7.25], [127.75, -7.353553390593273], [128.0, -7.25], [128.53033008588991, -7.4696699141100895], [128.67677669529664, -7.8232233047033635], [128.75, -7.853553390593273], [129.0, -7.75], [129.53033008588991, -7.9696699141100895], [129.75, -8.5], [129.53033008588991, -9.030330085889911], [129.17677669529664, -9.176776695296637], [129.14644660940672, -9.25], [129.25, -9.5], [129.03033008588991, -10.030330085889911], [128.5, -10.25], [128.25, -10.146446609406727], [128.0, -10.25], [127.75, -10.146446609406727], [127.5, -10.25], [127.25, -10.146446609406727], [127.0, -10.25], [126.75, -10.146446609406727], [126.5, -10.25], [126.25, -10.146446609406727], [126.0, -10.25], [125.75, -10.146446609406727], [125.5, -10.25], [124.96966991411009, -10.030330085889911], [124.75, -9.5], [124.96966991411009, -8.969669914110089], [125.32322330470336, -8.823223304703363]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.124155184729659}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.1985454541824436}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.97490950607022, 26.471127716142178, 26.187834505948274, 26.48259956378888]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.773081355793295, 24.71000818160377, 24.070705852832873, 24.29795136743286]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.7287506176733984, -1.150271559181368, -1.4268385728581112, -1.1034842366259312]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.7973106838231843, -1.5468905136061153, -2.124155184729659, -1.7290616522087703]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3047402424689014, -1.8440009119767697, -2.269511615292294, -1.7461587234373426]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4223740582885225, -2.4987392154674843, -3.2308416882094315, -2.8705326473023356]}}