The governor’s order authorizes that U.S. and Virginia state flags be flown at half-staff on all state and local buildings and grounds starting from sunrise on Tuesday until sunset.

Wang, Z., Román, M.O., Sun, Q., Molthan, A.L., Schultz, L.A., and Kalb, V. 2018. Monitoring Disaster-Related Power Outages Using   NASA Black Marble Nighttime Light Product. ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial   Information Sciences XLII-3, pp.1853-1856, DOI:10.5194/isprs-archives-xlii-3-1853-2018.

Sep 4, 2024 — Flying Flags at Half-Mast · April 9 – Vimy Ridge Day (at the B.C. Legislature only) · April 28 – Workers' Mourning Day · June 23 – National Day of ...

On April 16, 2007, 32 lives were lost to senseless gun violence at Virginia Tech. It was the worst day of my life.We must honor the lives lost by working together to keep our communities safe.

Flag orders can be issued by government officials such as the president or a state governor. The flag flying from that position signifies one of these three observances: the death of a government official, military member, or emergency first responder; a national tragedy, or Memorial Day or another National Day of Remembrance.

Subset of Black Marble 2016 annual composite generated using the NASA VIIRS DNB algorithm. Click on image to seefull 3km resolution global image.

The Tennessee State Flag was designed by a fellow named LeRoy Reeves of the Third Regiment Tennessee Infantry It was officially adopted by the Tennessee ...

Democratic U.S. Sen. Tim Kaine, who was governor at the time of the shooting, also shared his condolences on social media, calling the shooting, “It was the worst day of my life. We must honor the lives lost by working together to keep our communities safe.”

VNP46A2 is a daily moonlight- and atmosphere-corrected Nighttime Lights (NTL) product called VIIRS/NPP Gap-Filled Lunar BRDF-Adjusted Nighttime Lights Daily L3 Global 500m Linear Lat Lon Grid. This product contains seven Science Data Sets (SDS) that include DNB BRDF-Corrected NTL, Gap-Filled DNB BRDF-Corrected NTL, DNB Lunar Irradiance, Latest High-Quality Retrieval, Mandatory Quality Flag, Cloud Mask Quality Flag and Snow Flag.

Román, M.O., and Stokes, E.C. 2015. Holidays in lights: Tracking cultural patterns in demand for energy services. Earth's Future 3   (6), pp. 182-205, DOI:10.1002/2014ef000285

The 2007 shooting killed 27 students and five faculty members and was considered the deadliest mass shooting in U.S. history at the time.

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May 26, 2023 — The State of Michigan recognizes Memorial Day by lowering flags to half-staff from sunrise until noon. Michigan residents, businesses, schools, ...

According to the Navy, on a ship, the pole on which the flag flies is called a mast; while on land, the pole is referred to as a staff whether it is coming out of the ground or attached to a building.

The meaning behind the Thai flag is that the red stripes reflect the bloodshed in Thailand's fight for independence; the white represents pureness and ...

On Monday, Virginia Gov. Glenn Youngkin issued a flag order in remembrance of the anniversary of the Virginia Tech school shooting.

While the two terms — half-staff and half-mast — are interchangeable there are some technical differences between the terms.

The Day/Night Band (DNB) detectors that are part of the Suomi-NPP Visible Infrared Imaging Radiometer Suite (VIIRS) are pioneering a new generation of satellite products that provide global measurement of nocturnal visible and near-infrared light that are suitable for Earth science and climate studies. The VIIRS DNB's ultra-sensitivity in low-light conditions has allowed for the generation of new science-quality nighttime products due to significantly improved resolution and calibration compared to those provided previously by the Defense Meteorological Satellite Program's (DMSP) generation of nighttime lights imagery. These improvements have allowed for better monitoring of both the magnitude and signature of nighttime phenomena and anthropogenic sources of light emissions. The VIIRS Black Marble product has been used for global mapping of human activity patterns, such as tracking shipping and fishing vessels, flaring of waste natural gas, in addition to their application to humanitarian efforts, such as assessment of conflict-associated demographic changes and mapping impoverishment. The NASA Black Marble algorithm produces cloud-free imagery that have been corrected for atmospheric, terrain, lunar BRDF, thermal, and straylight effects. The corrected nighttime radiances, resulting in a superior retrieval of nighttime lights at short time scales and a reduction in background noise, enable quantitative analyses of daily, seasonal and annual variations. For additional information about the Black Marble products and applications, visit NASA's Black Marble web site.

Shop for authentic Arizona Flags. The Arizona State Flag features a copper star in the center of the flag with the 13 alternating red and yellow rays being ...

A flag with thirteen stars and thirteen stripes received its first salute ... Believed by many authorities to be the first Stars and Stripes used by American land ...

If you happen to find yourself on the grounds of a Virginia state building Tuesday, you may have noticed flags were being flown at half-staff.

SEVERNA PARK, INC. Yes, 832 MANHATTAN BEACH RD, SEVERNA PARK MD 21146, www.legionpost175.org, 410-544-2066 B, Inside Post Home.

Román, M.O., Wang, Z., Sun, Q., Kalb, V., Miller, S.D., Molthan, A., Schultz, L., Bell, J., Stokes, E.C., Pandey, B. and Seto, K.C.,   et al. 2018. NASA's Black Marble nighttime lights product suite. Remote Sensing of Environment, 210, pp.113-143,   DOI:10.1016/j.rse.2018.03.017.

NORFOLK, Va. — If you happen to find yourself on the grounds of a Virginia state building Tuesday, you may have noticed flags were being flown at half-staff.

File:Flag of Kyrgyzstan.svg ... Size of this PNG preview of this SVG file: 800 × 480 pixels. Other resolutions: 320 × 192 pixels | 1,024 × 614 pixels | 1,280 × ...

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Román, M.O., Stokes, E.C., Shrestha, R.M., Wang, Z., Schultz, L., Sepúlveda Carlo, E.A., Sun, Q., Bell, J., Molthan, A., Kalb, V.,      Ji, C.,Seto, K.C., McClain, S.N., and Enenkel, M. 2019. Satellite-based assessment of electricity restoration efforts in Puerto Rico   after Hurricane Maria. PLoS ONE, 14, DOI:10.1371/journal.pone.0218883.

“Today, we’re honoring the lives of the 32 Hokies who were tragically taken from their loved ones and the Virginia Tech community on April 16, 2007," the university wrote on X (formerly known as Twitter). “On the 2024 Day of Remembrance, we reflect on the tremendous promise each of them embodied for our world. #VTWeRemember.”

Enenkel, M., Shrestha, R.M., Stokes, E.C., Román, M.O., Wang, Z., Espinosa, T.M., Hajzmanova, I., Ginnetti, J., Vinck, P. 2019.   Emergencies do not stop at night: Advanced analysis of displacement based on satellite-derived nighttime light observations.         IBM Journal of Research and Development, DOI:10.1147/JRD.2019.2954404

VNP46A1 is a daily, top-of-atmosphere, at-sensor nighttime radiance product called VIIRS/NPP Daily Gridded Day Night Band 15 arc-second Linear Lat Lon Grid Night. The product contains 26 Science Data Sets (SDS) that include sensor radiance, zenith and azimuth angles (at-sensor, solar, and lunar), cloud-mask flags, time, shortwave IR radiance, brightness temperatures, VIIRS quality flags, moon phase angle, and moon illumination fraction. It also provides Quality Flag (QF) information specific to the cloud-mask, VIIRS moderate-resolution bands M10, M11, M12, M13, M15, M16, and DNB.

Wang, Z., Román, M.O., Kalb,V., Miller, S.D., Zhang, J., and Shrestha, R.M. 2021. Quantifying uncertainties in nighttime light   retrievals from Suomi-NPP and NOAA-20 VIIRS Day/Night Band data. Remote Sensing of Environment, 263 (112557),     DOI:10.1016/j.rse.2021.112557.

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Both VNP46A1 and VNP46A2 products are provided in standard Hierarchical Data Format–Earth Observing System 5 (HDF-EOS5) format. Currently, this collection is available from January 19, 2012 and forward.  Products from the VIIRS sensor aboard JPSS-1 (J1) will be also be available starting in mid-2023.

wereldvlaggen.nl Flags from every country and for every event. Order safely online. Collectors flags, sports flags, historical flags for the film industry, ...

Black Marble HD 2016 annual composite over Los Angeles, CA generated using the NASA VIIRS DNB algorithm. Click on image to see larger version.