MODIS Burn Scars and Flooding - Terra Surface Reflectance

Mature Support Notice: This item is in mature support as of March 2022. A replacement item has not been identified at this time. Esri recommends updating your maps and apps to phase out use of this item. This series of products from MODIS represents the only daily global composites available and is suitable for use at global and regional levels. This Burn Scars and Flooding band composition (Bands 7 2 1 | Shortwave Infrared, Near Infrared, Red) is designed to distinguish between burned areas and bare soil, this composition is effective at detecting recent burn scars, which will appear red to reddish-brown. Water will appear dark blue to black, making it an effective tool for delineating inundated areas. There are four Burn Scars and Floods products in total. For each satellite (Aqua and Terra) there is a 250 meter corrected reflectance product and a 500 meter surface reflectance product. Although the resolution is coarser than other satellites, this allows for a global collection of imagery on a daily basis, which is made available in near real-time. In contrast, Landsat needs 16 days to collect a global composite. Besides the maximum resolution difference, the surface and corrected reflectance products also differ in the algorithm used for atmospheric correction. NASA Global Imagery Browse Services (GIBS) This image layer provides access to a subset of the NASA Global Imagery Browse Services (GIBS), which are a set of standard services to deliver global, full-resolution satellite imagery. The GIBS goal is to enable interactive exploration of NASA's Earth imagery for a broad range of users. The purpose of this image layer, and the other GIBS image services hosted by Esri, is to enable convenient access to this beautiful and useful satellite imagery for users of ArcGIS. The source data used by this image layer is a finished image; it is not recommended for quantitative analysis. Several full resolution, global imagery products are built and served by GIBS in near real-time (usually within 3.5 hours of observation). These products are built from NASA Earth Observing System satellites data courtesy of LANCE data providers and other sources. The MODIS instrument aboard Terra and Aqua satellites, the AIRS instrument aboard Aqua, and the OMI instrument aboard Aura are used as sources. Several of the MODIS global products are made available on this Esri hosted service. This image layer hosted by Esri provides direct access to one of the GIBS image products. The Esri servers do not store any of this data itself. Instead, for each received data request, multiple image tiles are retrieved from GIBS, which are then processed and assembled into the proper image for the response. This processing takes place on-the-fly, for each and every request. This ensures that any update to the GIBS data is immediately available in the Esri mosaic service. Note on Time: The image service supporting this layer is time enabled, but time has been disabled on this image layer so that the most recent imagery displays by default. If you would like to view imagery over time, you can update the layer properties to enable time animation and configure time settings. The results can be saved in a web map to use later or share with others.成熟支持状态公告：本产品自2022年3月起进入成熟支持阶段，目前尚未确定替代产品。Esri建议您更新地图与应用，逐步停止使用该产品。 本系列由中分辨率成像光谱仪（MODIS）产出的产品，是目前唯一可获取的每日全球合成数据，适用于全球及区域尺度应用。该烧伤疤痕与洪水波段组合（波段7 2 1 | 短波红外、近红外、红光）旨在区分烧地区域与裸土，该组合可有效识别近期烧伤疤痕，其呈现为红色至红棕色。水体将显示为深蓝至黑色，因此可作为划定淹没区域的有效工具。 本系列共包含4款烧伤疤痕与洪水产品。针对每颗卫星（Aqua与Terra），分别提供250米校正反射率产品与500米地表反射率产品。尽管其分辨率低于其他卫星，但这一特性使其可每日获取全球影像数据，并以近实时形式发布。相较之下，陆地卫星（Landsat）需16天才能完成一次全球合成。除分辨率差异外，地表反射率与校正反射率产品所采用的大气校正算法也有所不同。 NASA全球影像浏览服务（GIBS） 本影像图层可访问NASA全球影像浏览服务（GIBS）的子集，后者是一套用于交付全球全分辨率卫星影像的标准服务。GIBS的目标是为广泛用户群体提供交互式浏览NASA地球影像的能力。本影像图层以及Esri托管的其他GIBS影像服务的用途，是为ArcGIS用户提供便捷访问这些优质且实用的卫星影像的途径。 本影像图层所使用的源数据为成品影像，不建议用于定量分析。GIBS以近实时（通常在观测后3.5小时内）构建并发布多款全分辨率全球影像产品，这些产品的数据来源于NASA地球观测系统卫星（由LANCE数据提供商及其他来源提供）。其数据源包括搭载在Terra与Aqua卫星上的MODIS仪器、搭载在Aqua卫星上的AIRS仪器，以及搭载在Aura卫星上的OMI仪器。多款MODIS全球产品均可在该Esri托管服务中获取。 本由Esri托管的影像图层可直接访问一款GIBS影像产品。Esri服务器本身不存储任何此类数据。相反，针对每一条收到的数据请求，系统将从GIBS获取多张影像瓦片，随后进行处理并拼接为符合响应要求的完整影像。该处理过程为实时动态完成，适用于每一条请求。这一机制确保了GIBS数据的任何更新都可立即在Esri镶嵌服务中体现。 时间相关说明：支持本图层的影像服务已启用时间功能，但本影像图层已禁用时间功能，默认显示最新影像。若您希望查看历史影像，可更新图层属性以启用时间动画并配置时间设置。结果可保存至Web地图中，供后续使用或与他人共享。