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Summary
Mar 26, 2010 The SRTM elevation data is detailed enough that you can make out objects as small as freeways and levees and the Blue Marble imagery brings it all to life. The California Terrain Map is available in four formats. A 1,200 dpi GeoPDF file (10 megabytes) A 12,343 x 11,372 24-bit GeoTIFF file (121 megabytes).
Description | العربية:القارَّة القُطبيَّة الجنوبيَّة (أنتاركتيكا). صورة ساتليَّة تابعة لِوكالة ناسا، من ضمن بيانات الگُلَّة الزرقاء المُرسلة عبر الأقمار الاصطناعيَّة (من على بُعد كيلومترٍ واحد من العدسة الساتليَّة المُستخدمة). 'تمَّ مزج بينات 'MODIS' المُخصصة لِدراسة حالة الجليد القطبي مع تلك الخاصَّة بالإدارة القوميَّة لِدراسة المُحيطات والمُناخ—التي تمَّ الحصول عليها عبر الراديومتر الأكثر تطوُّرًا.' تمَّ توليد الصورة باستخدام برنامج C مُخصص للتعامل مع صور وبيانات الگُلَّة الزرقاء، كما تمَّ الحصول على مُعادلات الإسقاط الشاقولي من موقع عالم الرِّياضيَّات. مُلاحظة: تمَّ تعديل هذه الصورة يدويًّا في سبيل ملء بعض المناطق ذات العُنصورات (الپكسلات) السوداء، في الرُبعيَّة العُليا اليُمنى. يُعتقد بأنَّ تلك العُنصورات السوداء ظهرت نتيجة فُقدان بعض البيانات الخاصَّة بغطاء الأرض البحر المُستعملة في صناعة صورة الگُلَّة الزرقاء الأصليَّة. English:Antarctica. An orthographic projection of NASA's Blue Marble data set (1 km resolution global satellite composite). 'MODIS observations of polar sea ice were combined with observations of Antarctica made by the National Oceanic and Atmospheric Administration’s AVHRR sensor—the Advanced Very High Resolution Radiometer.' Image was generated using a custom C program for handling the Blue Marble files, with orthographic projection formulas from MathWorld. Note: this image has been manually modified to fill in an area of black pixels in the ocean, in the upper right quadrant. The black pixels are presumed to be due to missing data in the land/sea mask used in making the original Blue Marble image. Español: El continente antártico. La imagen es una proyección ortogonal creada a partir del conjunto de datos satelitales Blue Marble de la NASA con una resolución de un kilómetro. Français : Le continent Antarctique. L’image est construite en projection orthographique à partir des données satellites « Blue Marble » de la NASA, ayant une résolution d’un kilomètre. Les images de la banquise, prises par MODIS, ont été combinées avec celles du radiomètre avancé à très haute résolution de la National Oceanic and Atmospheric Administration pour former celle-ci. Elle a été générée en utilisant le logiciel MathWorld. Note : cette image a été modifiée manuellement pour remplir une zone de pixels noir dans l’océan, dans le coin en haut à droite. Ces pixels manquants sont supposés être dus à des données manquantes dans le masque terre-mer utilisé pour construire l'image original de Blue Marble. Polski:Antarktyda. Odwzorowanie prostokątne opublikowanego w 2002 roku przez NASA zestawu danych Blue Marble. فارسی: جنوبگان Українська:Антарктида в ортографічній проекції з роздільною здатністю 1 км, на основі даних супутника MODIS. | |
Date | ||
Source | own work, using Blue Marble data from http://visibleearth.nasa.gov/view_rec.php?id=2433 | |
Author | Dave Pape | |
Permission (Reusing this file) |
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Other versions | Derivative works of this file: Antarctic Peninsula satellite image.jpgImage:Antarctica satellite globe.jpg |
Assessment
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This image was selected as picture of the day on Wikimedia Commons for . It was captioned as follows: English:Antarctica. An orthographic projection of NASA's Blue Marble data set. Bosanski: Antarktika. Ortografska projekcijaNASA-inog Blue Marble podatkovnog seta. Čeština: Antarktida v ortografické projekci ze souboru dat a fotografií NASA - NASA's Blue Marble data set. English: Antarctica. An orthographic projection of NASA's Blue Marble data set. Français: Le continent Antarctique, image construite en projection orthographique à partir des données satellites « Blue Marble » de la NASA. Italiano: Proiezione ortogonale dell'Antartide della serie Blue Marble Next Generation della NASA, scattate con strumenti MODIS. Magyar: A NASA MODIS (Moderate-resolution Imaging Spectroradiometer) műszerével készült műholdkép az Antarktisz földrajzi zónában elhelyezkedő Antarktika kontinensről Nederlands: Een orthografische projectie van Antarctica uit de Blue Marble-serie. Polski: Antarktyda. Odwzorowanie prostokątne opublikowanego w 2002 roku przez NASA zestawu danych Blue Marble. 한국어: 남극 대륙. 미항공우주국 블루 마블 데이터 세트의 정사영. |
Annotations | This image is annotated: View the annotations at Commons |
Captions
'}},'text/plain':{'en':{':'depicts'}}},'{'value':{'entity-type':'item','numeric-id':51,'id':'Q51'},'type':'wikibase-entityid'}':{'text/html':{'en':{'P180':'Antarctica</a>'}}}}'>Items portrayed in this file
File history
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Date/Time | Thumbnail | Dimensions | User | Comment |
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current | 14:21, 5 October 2006 | 6,400 × 6,400 (3.31 MB) | Davepape | touched up part with missing data |
07:49, 5 October 2006 | 6,400 × 6,400 (3.31 MB) | Davepape | {{Information |Description=Antarctica. An orthographic projection of NASA's Blue Marble data set (1 km resolution global satellite composite). 'MODIS observations of polar sea ice were combined with observations of Antarctica made by th |
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The Blue Marble Next Generation (BMNG) data set provides a monthly global cloud-free true-color picture of the Earth's landcover at a 500-meter spatial resolution. This data set, shown on a globe, is derived from monthly data collected in 2004. The ocean color is derived from applying a depth shading to the bathymetry data. The Antarctica coverage snown is the Landsat Image Mosaic of Antarctica. Behind the Earth is a skymap from the Tycho and Hipparcos star catalogs. This skymap is plotted in plate carrムᆵ_e projection (Cylindrical-Equidistant) using celestial coordinates making them suitable for mapping onto spheres in many popular animation programs. The stars are plotted as gaussian point-spread functions (PSF) so the size and amplitude of the stars corresponds to their relative intensity. The stars are also elongated in Right Ascension (celestial longitude) based on declination (celestial latitude) so stars in the polar regions will still be round when projected on a sphere. Stars fainter than the threshold magnitude, usually selected as 5th magnitude, have their magnitude-intensity curve adjusted so they appear brighter than they really are. This makes the band of the Milky Way more visible. Stellar colors are assigned based on B and V magnitudes (B and V are stellar magnitudes measured through different filters). If Tycho B and V magnitudes are unavailable, Johnson B and V magnitudes are used instead. From these, an effective stellar temperature is derived using the algorithms described in Flower (ApJ 469, 355 1996). Corrections were noted from Siobahn Morgan (UNI). The effective temperature was then converted to CIE tristimulus X,Y,Z triples assuming a black-body emission distribution. The X,Y,Z values are then converted to red-green-blue color pixels. About 2.4 million stars are plotted, but many may be below the pixel intensity resolution. The three most conspicuously missing objects on these maps are the Andromeda galaxy (M31) and the two Magellanic Clouds. Note: The Caspian Sea is the largest enclosed body of water on Earth by area. It has a surface area of 371,000 square kilometers (143,244 sq mi) and a volume of 78,200 cubic kilometers (18,761 cu mi). It has a salinity of approximately 1.2%, about a third the salinity of most seawater. Animator: Lori Perkins (NASA/GSFC), Tom Bridgman (GST). Platforms/Sensors/Data Sets: Terra and Aqua/MODIS/Blue Marble Land Cover, TRMM/PR and TMI/Monthly Average Precipitation, Hipparcos/Hipparcos Catalogue, Hipparcos/Tycho 2 Catalogue, Landsat-7/ETM+/Landsat Image Mosaic of Antarctica.