The Global Warming Solution  - is mainly a matter of photosynthetic optimization of the annually most efficient "top yielding crops" for each region followed by a new dedicated harvest followed by a new asserted logistics for commercial C sequestering(=store carbon for very long time stably) the annual production(See below) .

Photosynthesis is the dominating sun driven process on Planet Earth (above green areas). However, deserts -  photosynthetic free areas due to water deficiency - covers today 31% of the planet land area(= 5,1 Gha) of totally 16,7 Gha land above current sea level.  Picture data compilation & courtesy by NASA.

The most efficient plant species in the world are - at least in the tropical region where there is a high insolation the whole year - capable to yield ~200 tonnes dry matter/ha annually if photosynthesis is optimized at their standing point and growth is not limited there by water or fertilizer during the season. Some of the species with potentially that yield capacity are listed below and there practical annual yield on different latitudes. In the temperate region only about 1/3 of the year these conditions are fullfilled due to limiting temperatures and or very low light insolation. In the figure below is shown the highest yields recorded during practical farming conditions from some of the most efficient annual plant/crop species grown around the world. Figures are quantitatively ranked irrespective of growing latitude in the respective case which is assumed to have been under humid conditions in fertile soils of different compositions not specified here. The water hyacint is grown floating on the water surface of ponds with municipal sewage sludge. The other species are growing in conventional soil - sometimes irrigated.  Roughly 44 weight-% of the dry biomass is carbon(C) of stoechiometrical reasons (=the function of carbon in the plant) irrespective of species. A major reason why the potentially really high yielding annual crops deviates from the theoretical yield is a mix of limiting factors unique for each growing environment. Mostly the crops have simply got to littlse water and or ferilizer of some kind - most frequently nitrogen(N), phosphorus(P) and potassium(K). In the  case of sugar cane it is simply not fully fertilized to its adequate level due to limitations in the process regulation of photosynthesis in practical cultivation. The needed fertilizer amount is of course proportional to the yield - nothing else. The compilation below is done from several scientific or official verifiable sources by Rune Ekman, "Project AgroChall".

Some candidates to be the most photosynthetically efficient annual crops are shown above. In all cases exept for water hyacinth the total above ground biomass/ha  are represented in dry(0% water biomass). In the case of water hyacinth also the root is included, so we talk about total biomass dry matter/ha in practical field conditions. In the Project AgroChallenge models is assumed the lowest annual level of yield potential of 20 tonnes of dry matter biomass/ha & year as an average annual yield.

There is currently in the atmosphere ~110 Gt C in the atmosphere that respresent the amount of fossil C still left in the atmosphere that has to be eliminated. This fraction is  the causal agent behind that the CO2 has raised from 280  - 390 ppm since 1860. To this is now added a few ppm of CO2 annually in an accelerated speed due to unstringencies in the dynastic (political and economic) systems.

The slight increase in temperature of ~0,7°C that now heats up the polar region with about 5°C has increased the warming of these regions in a way hat is now triggering thawing of the permafrost areas. Recently is has been found by Walters(2005) that copious amounts of methane is now leaching out in the air from thawed methane hydrates in the permafrost areas coming from fossil stored photosynthesis energy in e g peat. The methane is produced during nonaerobic conditions by bacteria breaking down the biomass, but having been hampered by the former cold. Therefore thera are hughe amounts of conserved methane in the permafrost accumulated since up to 50 000 years in the peat "sedimenting from the annualphotosynthesis in these polar areas mainly in the North hemisphere. 

The global warming solution must therefore be a complete counterbalancing of also these fossil C threats, which puts an extra push on mankind so we´re gonna make the time perspective = START  NOW !

Photosynthesis is indeed the most dominant process on the planet driven fully by sun energy in a an "overdose" about 4 - 10 000 times higher than all human energy consumption - a technological challenge in itself. The photosynthesis is today annually fixing an amount of C which is 10 - 20 times bigger than all human energy consumption or at least the fossil burning in spite of all human missmanagement of the most efficient ecosystems. Efficient photosynthesis is today performed just by a minor fraction of professional growers utilizing the potential it really has.

That is why photosynthesis is indeed the massiv and perfect way to a counterbalancing of the respiration and/or combustion process.

The annual global photosynthetic fixation of C (light gren tarte fraction above)is actually of principally the same size (120 Gt C) as the total amount of C that has to be eliminated from the atmosphere (red fraction of the tarte minus dissolved in the sea=110 Gt C (currently).

Through an adequate international program here called "Project AgroChall" the Charles Keeling curve - shown above - will be mirrored back stoechiometrically to the 1950:ies level of ~300 ppm CO2 in the atmosphere. This is possible to achieve about 25 years after full stoechiometric implementation including the proposed commercial sequestering products.  

The continuation of the Keeling curve for a mankind in continued prosperity, population size and kept technologization level should therefore ideally look like the simplified diagram below.

Cultivation Example - Temperate Region