Regarding each of your three Part 1 scenarios for [CO2] in 2100:Estimate the temperature change viaEBCM for each scenario. (To make use of EBCM, make a copy of the spreadsheet provided. Adjust only th

1 . C hara cte riz e t h e a b so rp tio n s p ectr u m o f w ate r v ap or i n t h e I R p ortio n o f t h e E M s p ectr u m . T he a b so rp tio n s p ectr u m f o r w ate r v ap or c o nta in s v ario us b ro ad a b so rp tio n p eak s i n t h e i n fra re d p ortio n o f t h e s p ectr u m a n d t h ey a re a p pro xim ate ly a t 0 .8 , 0 .9 , 1 2 , 3 a n d 6 m ic ro m ete rs o n t h e w av ele n g th s c ale . A ddit io nally , t h ere i s b ro ad ban d s ta rtin g a t 1 2 m ic ro m ete rs t o 2 0 m ic ro m ete rs . T his m ean s t h at w ate r v ap or h as t h e a b ility t o a b so rb r a d ia tio n i n t h e i n fra re d p art o f t h e s p ectr u m .

2 . B ase d o n t h is c h ara cte riz a tio n , i s w ate r v ap or c o n sid ere d a ‘ g re en hou se -a ctiv e g as’? Y es, w ate r v ap or i s c o nsid ere d a ‘ g re en house -a ctiv e g as’.

3 . A ssu m e: “ F or a n y g iv en t e m pera tu re , E arth ’s a tm osp here h as a f in it e c a p acit y t o ‘ c a rry ’ w ate r v ap or.” I d en tif y a t l e a st t w o p ro cesse s t h at s e rv e t o ‘ r e g u la te ’ t h e a m ou nt o f w ate r v a p or i n t h e a tm osp here . T he f ir s t p ro cess i s t h e t e m pera tu re o f t h e s u rro undin g a tm osp here a n d t h e s e co nd o ne i s r e la tiv e h um id ity .

4 . B ase d o n t h is i n vestig atio n , w hat a re t h e i m plic a tio n s f o r w ate r v ap or a s a n a gen t o f c lim ate c h an ge? F ro m t h e p re v io us a n sw er, t e m pera tu re c o ntr o ls t h e a m ount o f w ate r v ap or i n t h e s u rro undin g a tm osp here . I f t e m pera tu re c h an ges d ue t o c lim ate c h an ge, s o d oes t h e a m ount o f w ate r v ap or a s i t i s c o rre la te d . 2 . R eg ard in g C arb on D io xid e:

1 . C hara cte riz e t h e a b so rp tio n s p ectr u m o f C arb on D io xid e i n t h e I R p ortio n o f t h e E M s p ectr u m . T he a b so rp tio n s p ectr u m f o r C arb on D io xid e h as m an y b ro ad a b so rp tio n p eak s i n t h e i n fra re d p ortio n o f t h e s p ectr u m . w hic h a re a p pro xim ate ly a t 3 , 4 , 5 a n d 1 4 m ic ro m ete rs o n t h e w av ele n gth s c ale . A ddit io nally , t h ere i s a b ro ad ban d s ta rtin g a t 1 4 m ic ro m ete rs t o 1 9 m ic ro m ete rs . T his m ean s t h at C arb on D io xid e h as t h e a b ility t o a b so rb r a d ia tio n i n t h e i n fra re d p art o f t h e s p ectr u m .

2 . B ase d o n t h is c h ara cte riz a tio n , i s C arb on D io xid e c o n sid ere d a ‘ g re en hou se -a ctiv e g as’? Y es, C arb on D io xid e i s c o nsid ere d a ‘ g re en house -a ctiv e g as’.

3 . S ta te t h e p erc en ta ge o f C O 2 i n t h e V en utia n a n d M artia n a tm osp here s. T he C O 2 p erc en ta g e i n t h e V en utia n a tm osp here i s r o ughly 9 5% a n d i n t h e M artia n a tm osp here , t h e p erc en ta g e i s r o ughly 9 2% .

4 . R esta te y ou r L ab 1 , P art 1 e stim ate f o r t h e c u rre n t v alu e f o r t h e [ C O 2]. B ase d o n t h e d ata f o und i n L ab 1 , P art 1 , t h e e stim ate f o r t h e c u rre n t v alu e f o r [ C O 2] i s 4 17ppm . 3 . C om pare a n d c o n tr a st w ate r v ap or a n d C arb on D io xid e:

1 . C an a s in gle a b so rp tio n b an d d is tin gu is h b etw een w ate r v ap or a n d C arb on D io xid e? T hro ugh m y s k etc h es, t h e t w o f o rm s o f g ase s ( w ate r v ap or a n d c arb on d io xid e) c an b e d if f e re n tia te d . C heck in g t h e s k etc h f o r w ate r v ap or, t h e p eak s o f t h e w av ele n gth a re f u rth er a p art m ean in g t h at t h e b ro ad ban d r a n ge i s a b out f iv e m ic ro m ete rs . H ow ev er, l o okin g a t t h e s k etc h f o r c arb on d io xid e, t h e w av ele n gth s a re c lo se r t o geth er m ean in g t h at t h e b ro ad ban d r a n ge i s a b out e ig ht m ic ro m ete rs .

2 . H ow d oes u se o f t h e e n tir e a b so rp tio n s p ectr u m f o r e a ch o f t h ese g ase s a ffe ct y ou r a b ilit y t o m ak e a c le a r d is tin ctio n ? T he r ic e m odel i n dic ate s t h at e v en t h o ugh w ate r v ap or a n d c arb on d io xid e a re i n t h e s a m e f a m ily , t h ey b oth s till h av e q uite d if f e re n t c h ara cte ris tic s s u ch a s t h eir i n fra re d a b so rp tio n l e v els . T his c an b e c o m pare d t o t h e r ic e m odel i f w ate r v ap or w as r ic e a n d c arb on d io xid e w as n oodle s. A lt h ough b oth r e q uir e w ate r a n d h eat, t h ey c o ok d if f e re n tly 3 . E xp la in t h e o n goin g a n d p re ssin g c o n cern w it h a n th ro p ogen ic e m is sio n s o f C arb on D io xid e r e la tiv e t o w ate r v ap or. C ookin g r ic e i s v ery l in ear a s t h ere a re o nly 3 f a cto rs i n volv ed : w ate r, r ic e a n d h eat. I f c arb on d io xid e w ere n oodle s a n d w e a d ded t h at t o t h e p ot o f r ic e, i t w ould b e v ery d if f ic u lt t o t r y t o c o ok b oth p erfe ctly a s t h ey h av e d if f e re n t p ro pertie s. T he s a m e g oes f o r w ate r v ap or a n d c arb on d io xid e i n t h e a tm osp here , w here f in din g a b ala n ce b etw een e sp ecia lly w ith a n th ro pogen ic e m is sio ns o f c arb on d io xid e i s d if f ic u lt.