File:Biomass Burning, Southern Africa.JPG
Original file (4,256 × 2,832 pixels, file size: 4.84 MB, MIME type: image/jpeg)
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Summary[edit]
DescriptionBiomass Burning, Southern Africa.JPG |
English: A smoke pall dominates this view of tropical southern Africa, one of the most fire-prone regions of the world. Numerous fires give rise to regional smoke palls every dry season. Fires are both natural (started by lightning) and set by local people to clear woodlands for agricultural fields.
This oblique, north-west-looking view from July 2011, at the end of the dry season, shows the extent of the smoke on the African plateau—from central Zimbabwe (image lower left) to northern Malawi more than 1,000 kilometres away (image top right), and in the wide coastal plains of the lower Zambezi River valley of Mozambique (image lower right). Here smoke can be seen blowing inland, channelled up the Zambezi River valley and contributing to the pall on the plateau. The light gray smoke plumes contrast with higher altitude, brighter patchy cloud cover at image lower right. The smoke palls obscure the details on the land surface so that Lake Malawi, one of Africa’s Great Lakes, is barely visible. The same goes for Lake Cahora Bassa, Africa’s fourth largest reservoir, in the Zambezi valley. The sun’s reflection off the surface of Lake Kariba makes it prominent in the view at image left. Kariba is 220 kilometres long and is the world’s largest artificial reservoir by volume. The steep, shadowed, mid-afternoon faces of the Inyanga Mountains on the Mozambique-Zimbabwe border protrude above the smoke layer at image lower left. Solar panels extending from Russian spacecraft docked at the International Space Station are visible at image left. |
Date | |
Source | NASA Earth Observatory |
Author | ISS Expedition 28 crew |
Camera location | 16° 00′ 00″ S, 33° 30′ 00″ E | View this and other nearby images on: OpenStreetMap | -16.000000; 33.500000 |
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This image or video was catalogued by Johnson Space Center of the United States National Aeronautics and Space Administration (NASA) under Photo ID: ISS028-E-18675. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing. Other languages:
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Image acquired with a Nikon D3S digital camera using a 28 mm lens, and is provided by the ISS Crew Earth Observations experiment and Image Science & Analysis Laboratory, Johnson Space Center.
Licensing[edit]
Public domainPublic domainfalsefalse |
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.) | ||
Warnings:
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Annotations InfoField | This image is annotated: View the annotations at Commons |
Lake Kariba (Zimbabwe-Zambia)
Lake Cahora Bassa (Mozambique)
Lake Malawi (Malawi)
Inyanga Mountains
Zambezi river valley
fire plume
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 13:00, 8 August 2011 | 4,256 × 2,832 (4.84 MB) | Originalwana (talk | contribs) | {{Information |Description ={{en|1=A smoke pall dominates this view of tropical southern Africa, one of the most fire-prone regions of the world. Numerous fires give rise to regional smoke palls every dry season. Fires are b |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | NIKON CORPORATION |
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Camera model | NIKON D3S |
Exposure time | 1/500 sec (0.002) |
F-number | f/11 |
ISO speed rating | 200 |
Date and time of data generation | 13:20, 23 July 2011 |
Lens focal length | 28 mm |
Orientation | Normal |
Horizontal resolution | 240 dpi |
Vertical resolution | 240 dpi |
Software used | GIMP 2.6.8 |
File change date and time | 13:41, 8 August 2011 |
Exposure Program | Shutter priority |
Exif version | 2.21 |
Date and time of digitizing | 13:20, 23 July 2011 |
APEX shutter speed | 8.965784 |
APEX aperture | 6.918863 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Subject distance | 7.08 meters |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire |
DateTime subseconds | 24 |
DateTimeOriginal subseconds | 24 |
DateTimeDigitized subseconds | 24 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 28 mm |
Scene capture type | Standard |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |