#remotesensing Timeline

209d

A really interesting paper just came out in Science a few weeks ago: <a href="https://www.science.org/doi/10.1126/science.adv9472" rel="nofollow" class="ellipsis" title="www.science.org/doi/10.1126/science.adv9472">https://www.science.org/doi/10.1126/science.adv9472</a>The authors compared satellite measurements of <a href="/tags/lightpollution/" rel="tag">#LightPollution</a> from <a href="/tags/viirs_dnb/" rel="tag">#VIIRS_DNB</a> to 2.6 million bird calls recorded at 7,824 locations around the world. They show not only that birds sing longer at both morning and night in areas that are brighter, but that the response is different for different species.For example, species with larger eyes are more strongly affected, and species that nest in cavities (protected from light exposure) are less affected.Very cool work!<a href="/tags/remotesensing/" rel="tag">#RemoteSensing</a> <a href="/tags/globalenvironmentalchange/" rel="tag">#GlobalEnvironmentalChange</a> <a href="/tags/birds/" rel="tag">#Birds</a> <a href="/tags/science/" rel="tag">#Science</a>

Cover image from Science with the title "Light pollution prolongs avian activity"

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192d

🛰️ New Imagery Press Release 🛰️The NISAR (NASA-ISRO Synthetic Aperture Radar) satellite sends "first light" images. <a href="https://www.jpl.nasa.gov/news/nasa-isro-satellite-sends-first-radar-images-of-earths-surface/" rel="nofollow" class="ellipsis" title="www.jpl.nasa.gov/news/nasa-isro-satellite-sends-first-radar-images-of-earths-surface/">https://www.jpl.nasa.gov/news/nasa-isro-satellite-sends-first-radar-images-of-earths-surface/</a><a href="/tags/nisar/" rel="tag">#NISAR</a> <a href="/tags/nasa/" rel="tag">#NASA</a> <a href="/tags/isro/" rel="tag">#ISRO</a> <a href="/tags/remotesensing/" rel="tag">#remotesensing</a> <a href="/tags/gischat/" rel="tag">#gischat</a> <a href="/tags/gis/" rel="tag">#gis</a> <a href="/tags/satellite/" rel="tag">#satellite</a> <a href="/tags/satellites/" rel="tag">#satellites</a> <a href="/tags/sar/" rel="tag">#SAR</a> <a href="/tags/jpl/" rel="tag">#JPL</a>

NISAR image of North Dakota, United States. The colors are black, orange, and purple. Image shows agriculture plots, fields, and center-pivot irrigation systems. On Aug. 23, NISAR imaged land adjacent to northeastern North Dakota’s Forest River. Light-colored wetlands and forests line the river’s banks, while circular and rectangular plots throughout the image appear in shades that indicate the land may be pasture or cropland with corn or soy. Credit: NASA/JPL-Caltech

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Edited 192d ago

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157d

🛰️ ICYMI New Imagery Press Release 🛰️EUMETSAT has released the first Earth images from its METimage instrument on board the recently launched Metop Second Generation A1 (Metop-SGA1) satellite.<a href="https://www.eumetsat.int/metimage-delivers-spectacular-first-images" rel="nofollow" class="ellipsis" title="www.eumetsat.int/metimage-delivers-spectacular-first-images">https://www.eumetsat.int/metimage-delivers-spectacular-first-images</a> HT to <a href="https://fediscience.org/@niklasjordan" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@niklasjordan</a> who runs <a href="https://niklas.social/@eumbot" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@eumbot</a> which posts live natural color composites of EUMETSATs Meteosat satellites at 15-minute intervals. <a href="/tags/remotesensing/" rel="tag">#remotesensing</a> <a href="/tags/satellite/" rel="tag">#satellite</a> <a href="/tags/satellites/" rel="tag">#satellites</a> <a href="/tags/eumetsat/" rel="tag">#eumetsat</a> <a href="/tags/eumetsat/" rel="tag">#eumetsat</a> <a href="/tags/earthobservation/" rel="tag">#earthobservation</a> <a href="/tags/gis/" rel="tag">#gis</a> <a href="/tags/gischat/" rel="tag">#gischat</a>

Captured between 10:43 and 10:59 CEST on 24 September, METimage’s very first image shows white clouds connected with a cold weather front sweeping across central Europe and signs of convective storm activity developing over the Adriatic and central Mediterranean seas. High altitude, wispy cirrus clouds hint to potential turbulence over the Netherlands, Belgium and Luxembourg, while thin aircraft contrails are clearly visible over cloud-free western Denmark. Where skies are clear, the Earth’s surface is revealed in fine detail: shimmering lakes can be seen in Türkiye, including the bright white salt flats of Lake Tuz, as well as the green landscapes of the Carpathians and Balkans, and Libya’s Waw an Namus volcanic caldera. Compared with AVHRR’s ~1 km resolution, METimage’s 500-metre view delivers about four times more detail, making it possible to pick out narrow cloud streets, thin valley fog and subtle coastal colour changes with far greater clarity.

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Edited 157d ago

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35d

15 years ago, I co-authored my first paper in the field of <a href="/tags/lightpollution/" rel="tag">#LightPollution</a> studies: <a href="https://doi.org/10.1371/journal.pone.0017307" rel="nofollow" class="ellipsis" title="doi.org/10.1371/journal.pone.0017307">https://doi.org/10.1371/journal.pone.0017307</a>Up to that point, work on artificial brightening of the sky had been done almost entirely by astronomers, who (for obvious reasons) weren't really interested in cloudy nights. But because I was involved closely with ecologists from the Leibniz Institute of Freshwater Ecology and Inland Fisheries <a href="https://wisskomm.social/@LeibnizIGB" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@LeibnizIGB</a>, we realized that it's also important to measure the extent to which overcast and clear nights differ.Through a bunch of twists and turns I now work on <a href="/tags/remotesensing/" rel="tag">#RemoteSensing</a> using nighttime light, but that was the paper that launched me into this direction.

Image from the paper showing a cloudy urban sky, where the clouds brighten the sky. A building with a satellite dish on top is a dark silhouette.

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