I apologize but this is one question that has multible parts.
There are currently (as of July 2018) 411 parts per million ofCO2 in our atmosphere. In July 2000 the concentration of CO2 was365 ppm. a) calculate the average exponential growth rate in thisperiod b) at this growth rate what will the concentration of CO2 inthe year 2100. A reasonable approximation of the amount of surfacetemperature (in degrees C) increase as related to CO2concentrationis given by: ?T = 0.8 * ?F where for CO2 ?F = 5.35 *LN(Cnow/Cbefore); Cbefore = 280 ppm Note that LN stands for thenatural logarithm; for instance ln(10) = 2.32 (just type ln 10 into Google) ?F (what we call climate forcing) represents the changein flux due to changing CO2 levels and that determines ?T c) Usingthe result obtained in Part b, what is the predicted temperaturechange in the year 2100 and is this prediction above or still belowthe Paris accord agreement of no more than 2C before 2100 above thepre-industrialized temperature? Over the last few years, CO2 growthis occurring at a larger rate than long term average. The followinglist gives you the necessary values to compute the relevant growthrates for the question below. Jan 1970 325 ppm Jan 1990 353 ppm Jan2005 378 ppm Jan 2019 411 ppm d) Using the same calibration asabove, calculate the exponential growth rate and predicted 2100temperature from that growth rate for the periods 1970-19901990-2005 2005-2019 please explain step by step how you came tothis answer. I would like to beable to do this myself in thefuture. thank you