tag:blogger.com,1999:blog-10808645029628114312024-03-12T23:33:25.458-07:00carbon-negativeSam Caranahttp://www.blogger.com/profile/12376449209858411775noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-1080864502962811431.post-82002091783359739932011-07-29T01:46:00.001-07:002011-07-29T01:46:51.829-07:00How much bio-char can be added to soil?<span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;">Using published projections of the use of renewable fuels in the year 2100, bio-char sequestration could amount to 5.5–9.5 PgCyr−1 if this demand for energy was met through pyrolysis, which would exceed current emissions from fossil fuels (5.4 PgC yr−1).</span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;"><br /></span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;"><br /></span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;">Assuming large bio-char sequestration over long periods of time, a bio-char sequestration of 140MgCha−1 would calculate to 224 PgC storage capacity globally for the 1,600 Mha of cropland worldwide and to 175 PgC storage capacity globally for the 1,250 Mha of temperate grasslands (IPCC 2000), not including forest land.</span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;"><br /></span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;"><br /></span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;">From:</span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;"><br /></span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;">Bio-char sequestration in terrestrial ecosystems – a review, Lehmann et al. (2006)</span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;"><br /></span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;"><br /></span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;">Note:</span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;"><br /></span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;">1 PgC (petagram Carbon) = 1 Gt (gigatonne Carbon) and corresponds to ~3.67 Gt CO2.</span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;"><br /></span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;">1 ppmv CO2 in the atmosphere corresponds to 2.12 GtC or ~7.78 Gt CO2.</span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;"><br /></span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;">9.5 PgC per year corresponds to 4.5 ppm per year, or 112 ppm in 25 years.</span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;"><br /></span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;"><br /></span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;"><img alt="280ppm" border="0" height="410" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh8HZMZHtkLFnqi3vOndmo6wI84GkKd4zT3w_hwy5PTD2lq4-kMssjMeXaJKY3GDq6IKTfUA0_3P5xNl8DRJuuuACOsTf6lhOJZTapUGCgW7S7TJUb9Oy6pt21zcyho_A9v5qteGdYNkKE/" style="-webkit-box-shadow: rgba(0, 0, 0, 0.496094) 1px 1px 5px; background-attachment: initial; background-clip: initial; background-color: white; background-image: initial; background-origin: initial; background-position: initial initial; background-repeat: initial initial; box-shadow: rgba(0, 0, 0, 0.496094) 1px 1px 5px; padding-bottom: 8px; padding-left: 8px; padding-right: 8px; padding-top: 8px;" width="550" /></span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;"><br /></span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;">Image from:</span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;"> </span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;"><a href="http://knol.google.com/k/sam-carana/the-way-back-to-280-ppm/7y50rvz9924j/78" style="color: #cc3300; text-decoration: none;">The way back to 280 ppm</a></span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;"> </span><span class="Apple-style-span" style="color: #333333; font-family: Georgia, Utopia, 'Palatino Linotype', Palatino, serif; font-size: 14px; line-height: 21px;">- by Sam Carana</span>Sam Caranahttp://www.blogger.com/profile/12376449209858411775noreply@blogger.com1tag:blogger.com,1999:blog-1080864502962811431.post-21612435672756461512008-04-09T20:30:00.000-07:002008-04-09T20:32:20.591-07:00Carbon-negative<a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgBUijXy0S3Q-C2CIDqaURrMeNK16YSOMC4gZiUJaVahLuYzA1VGBGLv6FsOqcMGqcGXhABd3wwV5ICJaaoB1kKITZYe-27l-zPmULYZb0fPA5wEYQDMrYI7taG1drto4AS_g8AI3YTkP4I/s1600-h/carbonnegative.gif"><img style="display:block; margin:0px auto 10px; text-align:center;cursor:pointer; cursor:hand;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgBUijXy0S3Q-C2CIDqaURrMeNK16YSOMC4gZiUJaVahLuYzA1VGBGLv6FsOqcMGqcGXhABd3wwV5ICJaaoB1kKITZYe-27l-zPmULYZb0fPA5wEYQDMrYI7taG1drto4AS_g8AI3YTkP4I/s400/carbonnegative.gif" border="0" alt=""id="BLOGGER_PHOTO_ID_5187454140589712290" /></a>Sam Caranahttp://www.blogger.com/profile/12376449209858411775noreply@blogger.com0