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<div style='text-align:Left;'><p><span style='font-weight:bold;'>Date of Image:</span></p><p><span>Pre-Event: May 2024</span></p><p><span>Post-Event: 7/9/2024, 7/10/2024, 7/11/2024, 7/12/2024, 7/13/2024, 7/14/2024, 7/15/2024, 7/16/2024, 7/17/2024, 7/18/2024</span></p><p><span></span></p><p><span style='font-weight:bold;'>Date of Next Image:</span></p><p><span>Unknown</span></p><p></p><p><span style='font-weight:bold;'>Summary:</span></p><p><span>These Black Marble radiance images were created by the NASA Black Marble Science team. The images are top-of-atmosphere radiance, which directly measures light intensity on the ground in units of nanowatts/(steradian centimeter squared). The images are scaled from 0 - 100, and show the impact of Hurricane Beryl on electric grids in and around Houston, Texas. The baseline image is from May 2024, a cloud-free, moon-free composite, and the “after" image is from July 9, 2024. In the "after" image, the color grey displays where clouds are present, and in the baseline image the grey displays where water is present. This comparison between the images is meant as a visual assessment of outage impacts from the extreme heat to aid various partners who are working to deliver emergency aids to local communities. Power outage maps like these help disaster response efforts in the short-term as well as long-term monitoring during the crucial stages of disaster recovery.</span></p><p><span></span></p><p><span style='font-weight:bold;'>Suggested Use:</span></p><p>PLEASE NOTE: This is the "top-of-atmosphere nighttime light radiance" product and has not been atmospherically- and lunar-BRDF-corrected. Given July 5, 2024 was a new moon in Houston, Texas, the impacts on these products has been minimal. However, as the moon phase reaches ~50% lunar illumination, impacts of using the non-atmospherically- and lunar-BRDF corrected product may be present. The atmospherically- and lunar-BRDF- corrected product is currently not available for use due to processing challenges. <br /></p><p><u>Lunar illumination</u></p><p>July 9, 2024: 12%</p><p>July 10, 2024: 18%</p><p>July 11, 2024: 26%</p><p>July 12, 2024: 35%</p><p>July 13, 2024: 44%</p><p>July 14, 2024: 54%</p><p>July 15, 2024: 63%</p><p>July 16, 2024: 72%</p><p>July 17, 2024: 80%</p><p>July 18, 2024: 88%</p><p>The image is in magma color scale. Yellow represents presence of more light; dark purple represents presence of less lights. In the "after" image, the color grey displays where clouds are present, and in the baseline image the grey displays where water is present. The cloud mask is conservative.</p><p></p><p><span style='font-weight:bold;'>Satellite/Sensor:</span></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'>NASA’s Black Marble nighttime lights product suite (VNP46A1 and <span style='font-family:Calibri, sans-serif; font-size:12pt;'>VJ146A1</span>) is derived from Visible Infrared Imaging Radiometer Suite (VIIRS) Day/Night Band (DNB) onboard:</p><p style='margin-top:0px; margin-bottom:0px; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'></p><ul><li><span style='font-family:inherit;'>Suomi National Polar-orbiting Platform (SNPP) for May 2024 composite and July 9, 2024</span></li><li>NOAA's Joint Polar Satellite System (JPSS-1) for July 10, 2024 - July 15, 2024</li></ul><p></p><p><span style='font-weight:bold;'>Resolution:</span></p><p><span>500 meters</span></p><p></p><p><span style='font-weight:bold;'>Credits:</span></p><p><span>NASA Black Marble Science team</span></p><p></p><p><span style='font-weight:bold;'>Please cite the following two references when using this data:</span></p><p><span>Román MO, Stokes EC, Shrestha R, Wang Z, Schultz L, Carlo EA, Sun Q, Bell J, Molthan A, Kalb V, Ji C. Satellite-based assessment of electricity restoration efforts in Puerto Rico after Hurricane Maria. PloS one. 2019 Jun 28;14(6):e0218883.</span></p><p><span>Román MO, Wang Z, Sun Q, Kalb V, Miller SD, Molthan A, Schultz L, Bell J, Stokes EC, Pandey B, Seto KC. NASA's Black Marble nighttime lights product suite. Remote Sensing of Environment. 2018 Jun 1;210:113-43.</span></p><p><span></span></p><p><span></span></p><p><span style='font-weight:bold;'>Point of Contact:</span></p><p><span>Virginia Kalb</span></p><p><span>NASA Goddard Space Flight Center</span></p><p><span>E-mail: virginia.l.kalb@nasa.gov</span></p><p><span></span></p><p><span style='font-weight:bold;'>Additional Links:</span></p><p><a href='https://blackmarble.gsfc.nasa.gov:443/' rel='nofollow ugc' style='text-decoration:underline;'><span>NASA’s Black Marble Product Suite</span></a></p><p><span>Román, M.O. et al. (2019) Satellite-based assessment of electricity restoration efforts in Puerto Rico after Hurricane Maria. PLoS One, 14 (6).</span></p><p><span>Román, M.O. et al. (2018) NASA’s Black Marble nighttime lights product suite. Remote Sensing of Environment. 210, 113–143.</span></p><p><span></span></p><p><span style='font-weight:bold;'>Esri REST Endpoint:</span></p><p><span>See URL section on right side of page.</span></p><p><span></span></p><p><span></span></p><p><span style='font-weight:bold;'>WMS Endpoint:</span></p><p><a href='https://maps.disasters.nasa.gov/ags03/services/hurricane_beryl_2024/Black_Marble_Radiance/MapServer/WMSServer' rel='nofollow ugc' target='_blank'>https://maps.disasters.nasa.gov/ags03/services/hurricane_beryl_2024/Black_Marble_Radiance/MapServer/WMSServer</a></p><p><span style='font-weight:bold;'>Data Download:</span><br /></p><p><a href='https://maps.disasters.nasa.gov:443/download/gis_products/event_specific/2024/hurricane_beryl/blackmarble/' rel='nofollow ugc' style='text-decoration:underline;'><span>https://maps.disasters.nasa.gov/download/gis_products/event_specific/2024/hurricane_beryl/blackmarble/<br /></span></a></p></div> |