File:Britishcolumbiafires tmo 2018225.jpg
Britishcolumbiafires_tmo_2018225.jpg (720 × 480 pixels, file size: 119 KB, MIME type: image/jpeg)
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Summary
editDescriptionBritishcolumbiafires tmo 2018225.jpg |
English: When lightning storms passed over the Canadian province of British Columbia in July and August 2018, they ignited several hundred fires in forests that were already primed to burn. Abnormally hot, dry weather had stressed vegetation and parched the soil. And infestations of mountain pine beetle had left many forests with large numbers of dead trees.
The Moderate Resolution Imaging Spectroradiometer (MODIS) on the Terra satellite captured this image of British Columbia’s smoky landscape on August 13, 2018. Some of the thickest smoke lingered in the valleys, but plumes had also spread well beyond the province into Washington state and deep into the U.S. Midwest. Plumes of wildfire smoke can have a significant impact on people and the environment. Small particles in smoke pose a health risk because they can easily enter the lungs and bloodstream. And dark particles in smoke can land on snow and ice and accelerate melting by absorbing heat and reducing the reflectivity of the surface.Deutsch: Als Gewitterstürme mit Blitzen im Juli und August über die kanadische Provinz British Columbia hinwegzogen, entzündeten sie mehrere hundert Feuer in Wäldern, die bereits hervorragend auf Waldbrände geeignet waren. Abnormal heißes, trockenes Wetter nahm die Vegetation stark in Anspruch und hat den Boden ausgetrocknet. Und der Befall von Bergkiefernkäfer führte dazu, daß es in manchen Wäldern eine große Zahl toter Bäume gab.
Der Moderate Resolution Imaging Spectroradiometer (MODIS) auf dem Satelliten Terra nahm dieses Bild der verrauchten Landschaft in British Columbiaam 13. August auf. Der dickste Rauch durchzieht dabei die Täler, doch haben sich Rauchwolken weit über die Provinzgrenzen hinaus in den US-Bundesstaat Washington und tief in den Mittleren Westen. Rauchwolken von Waldbränden können eine signifikante Auswirkung auf Menschen und Umwelt haben. Kleine Partikel im Rauch sind ein Gesundheitsrisiko, weilsie leicht in die Lungen und den Blutkreislauf gelangen. Und dunkle Partikel im Rauch können sich auf Schnee und Eis ablagern und soderen Schmelze beschleunigen, weil sie Wärme absorbieren und die Reflektivität der Oberfläche verringern. |
Date | |
Source | https://earthobservatory.nasa.gov/images/92604/smoke-blankets-british-columbia |
Author | NASA Earth Observatory images by Lauren Dauphin, using MODIS data from LANCE/EOSDIS Rapid Response and Landsat data from the U.S. Geological Survey. Story by Adam Voiland. |
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References & Resources
edit- CBC (2018, August 13) Smoke from hundreds of wildfires darkens skies over B.C. Accessed August 14, 2018.
- Cliff Mass (2018, August 14) Smoke Storm Hits Washington State. Accessed August 14, 2018.
- Global News (2018, August 13) B.C. wildfire update Monday: More fires now burning than during record 2017 season. Accessed August 14, 2018.
- NASA (2018, August 13) Smoke from BC Fires Blankets Canada and US. Accessed August 14, 2018.
- The Globe and Mail (2018, August 13) Air quality suffers, evacuations and alerts grow in B.C. following rash of new wildfires. Accessed August 14, 2018.
- The Washington Post (2017, June 26) Scientists just proved that wildfires dumped a huge amount of soot atop Greenland’s ice sheet. Accessed August 14, 2018.
- University of Wisconsin (2018, August 11) Wildfire smoke across the Midwestern US. Accessed August 14, 2018.
- Wired (2018, August 14) Wildfire Smoke Is Smothering the US—Even Where You Don't Expect It. Accessed August 14, 2018.
Licensing
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ||
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current | 13:26, 11 October 2018 | 720 × 480 (119 KB) | Matthiasb (talk | contribs) | {{Information |description ={{en|1=When lightning storms passed over the Canadian province of British Columbia in July and August 2018, they ignited several hundred fires in forests that were already primed to burn. Abnormally [http://www.agr.gc.ca/eng/programs-and-services/drought-watch/canadian-drought-monitor/?id=1463575104513 hot, dry weather] had stressed vegetation and parched the soil. And infestations of [http://www2.gov.bc.ca/assets/gov/farming-natural-resources-and-industry/forest... |
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