A statistical analysis indicates that summer uptake of CO2 is largely explained (similar to 50% of variance) by air mass exposure to uptake by Siberian and sub-arctic ecosystems. This resulted in an average 5 to 10 ppm difference with overlaying air masses. Stratosphere-troposphere exchange is ...
The protected forest areas generally had more negative AGB changes than the other two land categories and it had on average a loss of −5.79 Mgha-1year-1 with a standard deviation of 13.91 Mgha-1year-1. In contrast, the peak of the density in the other two land categories was around...
2e–f). The pecten, a vascular structure in the eye of birds that is devoid of photoreceptors, created a blind spot in the visual field that had a vertical length of 60°, with an average width of 14.0 ± 0.7° (Fig. 2e). We found that meadowlarks moved their eyes an average of ...
Under current greenhouse gas (GHG) emission reduction pledges, the world is not on track to limit the average global temperature rise to +2o C above ... D Willenbockel - 《Mpra Paper》 被引量: 0发表: 2016年 Development of H2 Production Process with Utilization of Steelmaking Slag The amou...
water use efficiency as atmospheric CO2 levels rise. Nature, 499: 324-327.) Other work at the Harvard Forest also documents an increase in growth by red oak over the same time period. O’Keefe’s phenology surveys, going back even further, document on average earlier springs, and later ...
In addition to measuring the column average CO 2 mixing ratio from the laser signals reflected by the ground, the CO 2 Sounder lidar also recorded the height-resolved attenuated atmospheric backscatter profiles beneath the aircraft. We have recently processed these vertical p...
Each tree is considered to be a “weak” regressor performance-wise but in combination, they create an ensemble that can outperform individual regressors. As the final prediction (AGB in our case), the average of the individual predictions of all of the decision trees in the forest is used....
As the final prediction (AGB in our case), the average of the individual predictions of all of the decision trees in the forest is used. 2.7. Generation of AGB Prediction Maps The PCD scenes were subjected to a binary classification, which separated the ground from vegetation LiDAR returns. ...
As the final prediction (AGB in our case), the average of the individual predictions of all of the decision trees in the forest is used. 2.7. Generation of AGB Prediction Maps The PCD scenes were subjected to a binary classification, which separated the ground from vegetation LiDAR returns. ...
These internal checks were on average considerably larger than checks found at the board's surfaces. Severe internal checking after weathering of TM spruce has not been reported by others [49,55], but is known to occur after the modification process especially when pith is enclosed within the ...