A Consistent and Corrected Nighttime Light dataset (CCNL 1992-2013) from DMSP-OLS data

<p>DMSP-OLS provides the longest observations of NTL information, from 1992 to 2013, an unparalleled dataset for studying historical artificial lights. Version 4 of the DMSP-OLS Nighttime Lights Time Series is widely used ( Image and data processing by NOAA&#39;s National Geophysical Data Center. DMSP data collected by US Air Force Weather Agency ). However, it suffers from three main problems: inter-annual inconsistency, saturation, and blooming effect.</p> <p>We used a&nbsp; series of methods to mitigate the impact and improve data quality. After processing, we get consistent and corrected nighttime light dataset (CCNL).</p> <p>The version 1 products span the globe from 75N latitude to 65S. The products are produced in 30 arc&nbsp;resolution and are made available in GeoTIFF format. Pixel Unit: &#39;DN&#39;(Digital Number).</p> <p>Each GeoTIFF filename has 4 filename fields that are separated by an underscore &quot;_&quot;. A filename extension follows these fields. The fields are described below using this example filename:</p> <p>CCNL_DMSP_1992_V1</p> <p>Field 1: CCNL(Consistent and Corrected Nighttime Light dataset)</p> <p>Field 2: Platform&nbsp;&quot;DMSP&quot;</p> <p>Field 3: Year&nbsp;&ldquo;1992&rdquo;</p> <p>Field 4: version &ldquo;V1&rdquo;</p>