VIIRS/JPSS2 Active Fires 6-Min L2 Swath 375m NRT

The VIIRS/JPSS2 Active Fires 6-Min L2 Swath 375m NRT with short-name VNP14IMG_NRT is a Near Real Time (NRT) active fire detection data product (Schroeder 2014). The product is built on the EOS/MODIS fire product heritage [Kaufman et al., 1998; Giglio et al., 2003], using a multi-spectral contextual algorithm to identify sub-pixel fire activity and other thermal anomalies in the Level 1 (swath) input data. The algorithm uses all five 375 m VIIRS channels to detect fires and separate land, water, and cloud pixels in the image. Additional 750 m channels complement the available VIIRS multispectral data. Those channels are used as input to the baseline active fire detection product, which provides continuity to the EOS/MODIS 1 km Fire and Thermal Anomalies product.<br />
The VIIRS 375 m fire detection data is a 6-min Level 2 swath product based on the input Science Data Record (SDR) Level 1 swath format. The NRT product is currently available through NASA's Land, Atmosphere Near real-time Capability for EOS (LANCE). The data are formatted as NetCDF4 files.

For more information read VIIRS 375 m Active Fire Algorithm User Guide at https://earthdata.nasa.gov/files/VIIRS_375m_Users_guide_Dec15_v2.pdf

and

Schroeder, W., Oliva, P., Giglio, L., & Csiszar, I. A. (2014). The New VIIRS 375m active fire detection data product: algorithm description and initial assessment. Remote Sensing of Environment, 143, 85-96. doi:10.1016/j.rse.2013.12.008 PDF from UMD

or

visit University of Maryland VIIRS Active Fire Web page at http://viirsfire.geog.umd.edu/

VIIRS/JPSS2 动态火灾检测 6分钟L2带状375米近实时（NRT）数据产品，简称VNP14IMG_NRT，是一款基于近实时（NRT）的动态火灾检测数据产品（Schroeder，2014年）。该产品继承了EOS/MODIS火灾产品系列的传统[ Kaufman等，1998年；Giglio等，2003年]，采用多光谱上下文算法，在1级（带状）输入数据中识别亚像素火灾活动以及其他热异常。算法利用所有五个375米VIIRS通道来检测火灾并区分图像中的陆地、水域和云层像素。额外的750米通道补充了可用的VIIRS多光谱数据。这些通道作为基线动态火灾检测产品的输入，为EOS/MODIS 1公里火灾和热异常产品提供连续性。

VIIRS 375米火灾检测数据是一款基于输入科学数据记录（SDR）1级带状格式的6分钟L2带状产品。近实时（NRT）产品目前可通过NASA的EOS（地球观测系统）陆地、大气近实时能力（LANCE）获取。数据格式为NetCDF4文件。

欲了解更多信息，请参阅VIIRS 375米动态火灾算法用户指南：https://earthdata.nasa.gov/files/VIIRS_375m_Users_guide_Dec15_v2.pdf

或阅读Schroeder等（2014年）发表的《新的VIIRS 375米动态火灾检测数据产品：算法描述及初步评估》。Remote Sensing of Environment，143，85-96。DOI：10.1016/j.rse.2013.12.008

或访问马里兰大学VIIRS动态火灾网页：http://viirsfire.geog.umd.edu/