20260609
11521100
1.0
FALSE
ENV_Temps_traverses_af
-8418082.957100
-8398211.685900
4816407.047200
4841154.734100
1
Projected
GCS_WGS_1984
Linear Unit: Meter (1.000000)
<ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.3.0'><WKT>PROJCS["WGS_1984_Web_Mercator_Auxiliary_Sphere",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator_Auxiliary_Sphere"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Standard_Parallel_1",0.0],PARAMETER["Auxiliary_Sphere_Type",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",3857]]</WKT><XOrigin>-20037700</XOrigin><YOrigin>-30241100</YOrigin><XYScale>10000</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>102100</WKID><LatestWKID>3857</LatestWKID></ProjectedCoordinateSystem>
WGS_1984_Web_Mercator_Auxiliary_Sphere
20260611
14550400
20260611
14552200
150000000
5000
FGDC
dataset
external
1824e07d8731e9c361b7ef228c6d3eceae040beb
FirstMap
Delaware Department of Technology and Information (DTI)
801 Silver Lake Blvd
Dover
DE
19904
US
FirstMap@delaware.gov
302-739-9560
FirstMap
FirstMap
Location Intelligence Team
FirstMap
True
FirstMap
20260611
File Geodatabase Feature Class
Traverse Points Afternoon
DNREC Division of Climate, Coastal, and Energy, Climate Sustainability Program
external
1824e07d8731e9c361b7ef228c6d3eceae040beb
FirstMap
Delaware Department of Technology and Information (DTI)
801 Silver Lake Blvd
Dover
DE
19904
US
FirstMap@delaware.gov
302-739-9560
FirstMap
FirstMap
Location Intelligence Team
FirstMap
True
FirstMap
2023-07-23T00:00:00
2026-06-19T00:00:00
Wilmington and Surround Area Heat Mapping Data
The heat maps contain temperature data from Wilmington and surround townships as part of a community science program to better understand extreme heat. The data are collected using car-mounted sensors that drove 6 predetermined routes during three collection periods (6-7 am, 3-4 pm, 7-8 pm) on July 23, 2023. The data are available as transects for each collection period. In addition, a heat map is available for each collection period that combined the transect data with satellite data.
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The data were collected to map out the heterogeneity in the enhanced heating in urban settings, known as the urban heat island, in the City of Wilmington and other urban centers in Delaware. The heterogeneous distribution of heat throughout a city due to variations in geography and land-use results in residents facing disparate exposure to heat extremes. The results indicate the areas where the urban heat island is most extreme in this region. It also may assist those providing cooling services, emergency managers, planners and policy makers determine how best to respond to extreme heat.</SPAN></P></DIV></DIV></DIV>
climate
extreme heat
urban heat island
Wilmington
FirstMap
1
-75.620895
-75.442422
39.658247
39.829262
Local partners successfully completed their heat mapping campaign by collecting thousands of temperature and humidity data points in the morning, afternoon and evening of a long, hot day on July 23rd, 2023.
2023-07-23T00:00:00
DNREC Division of Climate, Coastal, and Energy, Climate Sustainability Program
Gerard J. Mangone Climate Change Science and Policy Hub (U. Delaware)
Center for Environmental Monitoring and Analysis (U. Delaware)
Delaware Resilience Hub
external
1824e07d8731e9c361b7ef228c6d3eceae040beb
FirstMap
Delaware Department of Technology and Information (DTI)
801 Silver Lake Blvd
Dover
DE
19904
US
FirstMap@delaware.gov
302-739-9560
FirstMap
FirstMap
Location Intelligence Team
FirstMap
True
FirstMap
Esri ArcGIS 13.3.7.52636
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The State of Delaware makes no warranty or representation, expressed or implied, with respect to the quality, content, accuracy, completeness, currency, or non-infringement of proprietary rights, of any of the GIS or other data or information, or any other materials and items, that are displayed or made available for download from this site. All such data, information, items and materials (collectively, the “FirstMap Data”) are provided "as is" and users are fully and solely responsible for any consequences of use. FirstMap Data may have been created from a variety of sources, including sources beyond the control of the State of Delaware, and are subject to change without notice. To the extent you use, apply, add to, modify or implement this information in your own information system or other setting, or otherwise for your own purposes, you do so at your own risk. In no event shall the State of Delaware or its agencies, officers, employees, agents, or representatives be liable for any damages of any kind or nature whatsoever including, but not limited to, direct, indirect, special, punitive, incidental, exemplary or consequential damages arising from your downloading, modifying, sharing, distributing, or using of FirstMap Data even if notified of the possibility of such damages. Further, the State of Delaware does not accept liability for any damages or misrepresentation caused by inaccuracies in the FirstMap Data or as a result of changes to the FirstMap Data, nor is there responsibility assumed to maintain the FirstMap Data in any manner or form.</SPAN></P></DIV></DIV></DIV>
Dana Veron
University of Delaware
Newark
DE
19711
dveron@udel.edu
302-831-4842
1
-75.620926
-75.442419
39.829212
39.658273
The data and metadata were sent to the DTI Location Intelligence team by Dana Veron at the University of Delaware. Data were downloaded from OSF website and imported into geodatabases within FirstMap. These datasets are replacing the retiring Heat Watch Wilmington application.
The research results were presented in a web mapping application by CAPA and NIHHIS. The data were downloaded from OSF and imported into FirstMap.
OSF
https://osf.io/yef5w/files/osfstorage?view_only=e6884a4f1b2e4818a779cb5c81e343fa
2023-07-23T00:00:00
2026-06-19T00:00:00
City of Wilmington and surrounding areas
2023-07-23T00:00:00
-75.620895
-75.442422
39.658247
39.829262
Data were downloaded from OSF, extracted, and imported into a file geodatabase. Defined the projection, then reprojected into web mercator.
Migrating data from OSF to FirstMap before the old site is decommissioned.
2026-06-11T00:00:00
external
1824e07d8731e9c361b7ef228c6d3eceae040beb
FirstMap
Delaware Department of Technology and Information (DTI)
801 Silver Lake Blvd
Dover
DE
19904
US
FirstMap@delaware.gov
302-739-9560
FirstMap
FirstMap
Location Intelligence Team
FirstMap
True
FirstMap
Data downloaded from OSF website mentioned in data source.
Removed outliers during quality control process.
Multi-stage process was developed for quality assurance and quality control (outlier removal)
EPSG
6.18.3(9.3.1.2)
Raster point represents temperature in the surface model at the time of collection.
(6-7 am, 3-4 pm, 7-8 pm) traverses (.shp, vector shapefile) = data collected by campaign participants rasters (.tif, geotiff) = heat surface models
am = morning; af = afternoon; pm = evening
t = temperature; hi = heat index
f = Fahrenheit c = Celsius
e.g. pm_hi_f.tif = evening heat index geotiff raster with fahrenheit values. -9999 = removed outlier value (traverse point)
ENV_Temps_traverses_af
Feature Class
12777
OBJECTID
OBJECTID
OID
4
0
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Shape
Geometry
0
0
0
Feature geometry.
Esri
Coordinates defining the features.
t_f
t_f
Double
8
0
0
rh
rh
Double
8
0
0
hi_f
hi_f
Double
8
0
0
12777
Simple
FALSE
12777
TRUE
FALSE