![]() For info on how to filter by flair on various apps and sites click here. For more information on which flair to use check here. Limit Homebrew - You may only post one new homebrew thread per day.Īll posts must be flaired - Submissions should be flaired with an appropriate flair. ![]() Limit self-promotional links - Any self-promotional external links (such as blogs, storefronts or Kickstarters) must be related to D&D and posted no more than once every 14 days. Text memes should be relevant to discussion. Use clear, concise title names - Titles must be clear, concise, and not worded in a misleading fashion.ĭo not post memes or joke posts - Meme images should be posted on /r/dndmemes. ![]() Do not suggest ways for such material to be obtained. Please respect the opinions of people who play differently than you do.ĭo not suggest piracy - Any non-fair use posts containing closed content from WotC or any third party will be removed. Please join us on our discord, and our new Lemmy server:īe civil to one another - Unacceptable behavior includes name calling, taunting, baiting, flaming, etc. MODIS Burned Area: Reference data derived from 558 Landsat images distributed across the globe using a stratified sampling approach.A place to discuss the latest version of Dungeons & Dragons, the fifth edition, known during the playtest as D&D Next.Burned Area Reference Database (BARD), from the European Space Agency Fire Climate Change Initiative (CCI): An extensive compilation of global and regional burned area reference datasets generated primarily from Landsat-8 and Sentinel-2 imagery.Globcarbon project, from the European Space Agency: Reference data derived from 72 Landsat image pairs from year 2000.The current draft version on burned area validation will be complemented by sampling schemes of reference data and an active fire validation component.Īctive Fire and Burned Area Reference Data Sets The Fire focus area of CEOS LPV is currently developing a good practices protocol for the validation of satellite-derived active fire and burned area products. 2006) and airborne thermal imaging systems (Schroeder et al. Coincident measurements currently are not routinely available, even opportunistic experiments used BIRD FRP estimates (Zhukov et al. Validation work is limited for fire radiative power since it requires coincident unsaturated radiance measurements (Csiszar et al. More recently, Active Fires have been validated with Landsat imagery (Schroeder et al. 2005), on board the Terra satellite that also carries a moderate resolution sensor (ASTER). This was the case for MODIS (Csiszar et al. ![]() Validation results showed that most BA products have high to moderate commission and omission errors and tend to highly underestimate BA.Īctive Fires have been validated with simultaneous observations with higher spatial resolution. 2014a Roy and Boschetti 2009 Boschetti et al. Cross-tabulation analysis is the most common validation approach, although other regional or patch-level analyses are of interest (Boschetti et al. The standard procedure to generated reference data for Burned Area includes the use of pairs of Landsat-class imagery, as described in CEOS LPV good practices guidelines (Boschetti et al. FRP validation has the added complication of demanding “fire-friendly” sensors that have the high dynamic range needed to sense actively burning fires without saturating. Reference data samples are consequently even more scarce and rely heavily on ground-based instrumentation. As with active fire detection products, a major challenge in validating FRP products is the generation of reference data due to the ephemerality of the phenomenon. Validation stage 3 (LPV validation stage hierarchy) - The highest LPV validation stage reached for satellite-derived fire radiative power (FRP) products. Reference data samples are consequently scarce and often not coincident with product estimates. The main challenge to validate fire products is the generation of reference data due to the ephemerality of the phenomenon to be mapped and the current revisit times of moderate-high spatial resolution observing systems. Validation stage 3 (LPV validation stage hierarchy) - The highest LPV validation stage reached for satellite-derived active fire detection products. Most burned area products are made publicly available along with a Stage-2 or Stage-3 validation. Validation stage 3 (LPV validation stage hierarchy) - The highest LPV validation stage reached for satellite-derived burned area products.
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