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  • The Earth Observations Group (EOG) is producing a version 1 suite of average radiance composite images using nighttime data from the Visible Infrared Imaging Radiometer Suite (VIIRS) Day/Night Band (DNB). Prior to averaging, the DNB data is filtered to exclude data impacted by stray light, lightning, lunar illumination, and cloud-cover. Cloud-cover is determined using the VIIRS Cloud Mask product (VCM). In addition, data near the edges of the swath are not included in the composites (aggregation zones 29-32). Temporal averaging is done on a monthly and annual basis. The version 1 series of monthly composites has not been filtered to screen out lights from aurora, fires, boats, and other temporal lights. However, the annual composites have layers with additional separation, removing temporal lights and background (non-light) values. The version 1 products span the globe from 75N latitude to 65S. The products are produced in 15 arc-second geographic grids and are made available in geotiff format as a set of 6 tiles. The tiles are cut at the equator and each span 120 degrees of latitude. Each tile is actually a set of images containing average radiance values and numbers of available observations. In the monthly composites, there are many areas of the globe where it is impossible to get good quality data coverage for that month. This can be due to cloud-cover, especially in the tropical regions, or due to solar illumination, as happens toward the poles in their respective summer months. Therefore, it is imperative that users of these data utilize the cloud-free observations file and not assume a value of zero in the average radiance image means that no lights were observed. The version 1 monthly series is run globally using two different configurations. The first excludes any data impacted by stray light. The second includes these data if the radiance vales have undergone the stray-light correction procedure (Reference). These two configurations are denoted in the filenames as "vcm" and "vcmsl" respectively. The "vcmsl" version, that includes the stray-light corrected data, will have more data coverage toward the poles, but will be of reduced quality. It is up to the users to determine which set is best for their applications. The annual versions are only made with the “vcm” version, excluding any data impacted by stray light. Filenaming convention: The version 1 composite products have 7 filename fields that are separated by an underscore "_". Internal to each field there can be an additional dash separator "-". These fields are followed by a filename extension. The fields are described below using this example filename: SVDNB_npp_20140501-20140531_global_vcmcfg_v10_c201502061154.avg_rade9 Field 1: VIIRS SDR or Product that made the composite "SVDNB" Field 2: satellite name "npp" Field 3: date range "20140501-20140531" Field 4: ROI "global" Field 5: config shortname "vcmcfg" Field 6: version "v10" is version 1.0 Field 7: creation date/time Extension: avg_rade9 The annual products can have other values for the config shortname (Field 5). They are: "vcm-orm" (VIIRS Cloud Mask - Outlier Removed) This product contains cloud-free average radiance values that have undergone an outlier removal process to filter out fires and other ephemeral lights. "vcm-orm-ntl" (VIIRS Cloud Mask - Outlier Removed - Nighttime Lights) This product contains the "vcm-orm" average, with background (non-lights) set to zero. "vcm-ntl" (VIIRS Cloud Mask - Nighttime Lights) This product contains the "vcm" average, with background (non-lights) set to zero. Data types/formats: To reach the widest community of users, files are delivered in compressed tarballs, each containing a set of 2 geotiffs. Files with extensions "avg_rade9" contain floating point radiance values with units in nanoWatts/cm2/sr. Note that the original DNB radiance values have been multiplied by 1E9. This was done to alleviate issues some software packages were having with the very small numbers in the original units. Files with extension "cf_cvg" are integer counts of the number of cloud-free coverages, or observations, that went in to constructing the average radiance image. Files with extension “cvg” are integer counts of the number of coverages or total observations available (regardless of cloud-cover). Credit: When using the data please credit the product generation to the Earth Observation Group, Payne Institute for Public Policy.

  • This data set represents the monthly, accumulated results of the final (10-day) version of the fire perimeters from the "Burnt Area Daily NRT Incremental Product - Europe, Sentinel-3" dataset. The burn perimeters are spatially and temporally correlated, so that interrelated detections from consecutive observations are combined into a single feature. A perimeter is interpreted as belonging to a given event if a spatial overlap exists within a time frame of 15 days. Besides the geometry, attribute information is also combined while considering the size of the perimeter as a weighting factor. Each feature contains information about the final fire perimeter, Date/Time of the first detection, and the averaged burn severity.

  • Die zuständige Behörde hat den gesetzlichen Auftrag, bestehende Ausreiseverpflichtungen durchzusetzen, sofern ihnen keine rechtlichen oder tatsächlichen Gründe entgegenstehen. Dabei wird der Möglichkeiten der freiwilligen Ausreise Vorrang gegenüber einer Abschiebung eingeräumt. Alle ausreisepflichtigen Personen werden über die Möglichkeit der freiwilligen Ausreise und Wege der Förderung beraten. Sollte der Ausreisepflicht jedoch nicht nachgekommen werden, werden die Betroffenen abgeschoben. Monatliche Darstellung der Anzahl der Personen, die abgeschoben oder freiwillige ausgereist sind.

  • In der Karte werden die Kommunen in Bayern dargestellt und wie viele BayernWLAN Hotspots sie betreiben.

  • Das Radwegenetz beinhaltet alle Radwege, die keinen Eigennamen besitzen und somit nicht zum Fernradwegenetz gehören. Die Radwege können im shape-Format heruntergeladen werden. Das Shape-Format gibt es zum einen ohne Knotenverbindung, indem der Streckenverlauf eines Weges so weit wie möglich zu einer Linie zusammengefasst wird, und zum anderen mit Knotenverbindungen, hier wird an allen Kreuzungen der Streckenverlauf geteilt. Foto Themenbild: © ARochau - Fotolia.com

  • Die Fernradwege sind alle in Bayern ausgeschilderte überregionale Radwege, die einen Eigennamen besitzen. Es kann zwischen zwei Dateiformaten gewählt werden: wegebezogene GPX-Tracks, die weniger als 10000 Trackpunke umfassen und zusätzliche Höheninformationen pro Trackpunkt enthalten; das Shape-Format gibt es zum einen ohne Knotenverbindung, indem der Streckenverlauf eines Weges so weit wie möglich zu einer Linie zusammengefasst wird, und zum anderen mit Knotenverbindungen, hier wird an allen Kreuzungen der Streckenverlauf geteilt. Foto Themenbild: © ARochau - Fotolia.com

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