"Because gases are less soluble in warm water than in cold."
"Right. So, what you get is an outgassing of carbon dioxide into the atmosphere near the equator--because the warmer water can't hold it --and a corresponding sink for carbon dioxide at higher latitudes. This keeps everything nicely balanced. In fact the oceans are an extremely efficient exchange machine, maintaining a constant level of atmospheric C02 of about 0.03 percent. That's been the case for thousands, millions of years."
"What about the increase in carbon dioxide?" Nick said. "We're all going to fry in the greenhouse, aren't we?"
"We've known about that since the thirties," Chase said, nodding. "It was a British engineer, G. S. Callendar, who published some calculations in the Journal of the Royal Meteorological Society that showed that in the fifty years up to 1936, man's industrial activities had added one hundred fifty billion tons of carbon dioxide to the atmosphere. Since then, of course, industrial expansion has zoomed off the graph, so that now it's estimated that over twenty billion tons are released into the atmosphere each year. The real point isn't the actual amount--it's still very small compared to the huge fluxes of gases that take place in the forests and the oceans--but how would a carefully balanced ecosystem cope with all this extra C02 floating around?"
"And what's the answer, mastermind?"
"Nobody yet knows. We do know that since about 1850 there's been a ten to fifteen percent increase in carbon dioxide in the air, which is where you get your greenhouse effect from. Most people don't understand that our atmosphere is heated from below, by radiated heat from the earth's surface. The sun's rays come through, heat us up, and then because of the added carbon dioxide and water vapor can't get out again. The heat gets trapped; ergo, we all turn into tomatoes."
"Wonderful." Nick raised his can. "I'll drink to that."
Chase reached out and pressed his arm. "Before you do, my junkie friend, answer this: Where has all the extra carbon dioxide gone to?"
Nick blinked. "Why, don't they know?" He seemed mildly interested at last.
"Nope. We produce an extra twenty billion tons a year--probably nearer thirty--and less than fifty percent of that increase has been detected in the atmosphere. You could win the Nobel by answering that."
"Why don't you try? You're the marine biologist."
"But not an atmospheric physicist," Chase pointed out sensibly. He looked down at the piece of creased paper on his knee, wondering if the Russian had found the answer to that puzzle. Was the extra C02 being absorbed into the polar oceans? They were the usual C02 sinks--
Then it struck him with a small chilling shock. Something he'd only this moment realized. For of course the absolutely crucial question was how long could the oceans keep on absorbing the extra carbon dioxide that year by year was increasing due to man's industrial activities? Surely there must come a time when the oceans reached saturation point. What then? How would that affect the complex interweaving of atmosphere, oceans, and landmass and the life-forms that depended on them?
Watching him, Nick said, "For God's sake, you look like somebody who's lost a quid and found a rusty nail. I've told you, Gav, stop fretting over it. It isn't your problem."
"Perhaps it is my problem," Chase said quietly.
"You're too damn serious for your own good."
"Yours too."
"Mine?" Nick snorted. "Let me tell you what my only problem is-- whether or not Doug Thomas is on that Hercules tomorrow with a little plastic bag."
"What the hell does Banting think he's playing at?" Chase said, suddenly angry. "I wouldn't put him in charge of a piss-up in a brewery."
Nick tutted. "I do wish you wouldn't employ these vulgar northern expressions. They lower the tone of this establishment." He gazed around with feigned rapture at the cramped, muggy room with its decrepit furniture and makeshift bar and the motley collection of scientists, most of them bearded and unkempt. It had all the charm of an East End flophouse.
"Well, thank God I'm leaving soon," Chase said with genuine feeling. "Back to sanity and civilization."
"And sex," said Nick with such lugubrious envy that Chase couldn't help bursting out laughing.
The four-engined ski-shod C-130 landed the next afternoon right on schedule, taking advantage of the paltry rays cast by a centimeter of sun peeping reluctantly over the horizon. It was a clear calm day with the wind down to 15 knots, the sky a magnificent deep magenta, and everyone not engaged with some pressing duty was on the surface to greet the aircraft. Any diversion brought a welcome break in routine.
With typical thoroughness the Americans had sent a three-man medical team equipped with a special stretcher onto which the injured man was carefully placed, made comfortable, and strapped down. Chase had to admit grudgingly that he was receiving the best possible care and attention.
He stood with Nick Power and several others watching the stretcher being taken on board through the rear drop-hatch. Professor Banting was a little way off with the American in charge of the operation, a young executive officer named Lloyd Madden, who had the alert, eagle-eyed look of a military automaton. Probably brushed his teeth the regulation number of strokes, Chase conjectured sourly, prepared to find fault at the least excuse.
When the stretcher had disappeared into the hold of the Hercules, Chase left the group he was with and wandered across. Banting paused in midsentence and gave him a fisheyed stare. Chase ignored it and stuck out his mittened hand.
"Lieutenant? I'm Gavin Chase."
"Yes--Dr. Chase. You're the one who found him on the ice, so Professor Banting informs me." Soft voice, hard eyes.
"That's right. I thought he'd pissed on his chips."
The young lieutenant frowned, making his hatchet face inside the red parka hood sharper still. "Excuse me?"
"Dead. Zilch," Chase said. "Nearly but not quite."
Lieutenant Madden raised his smooth chin and brought it down in a swift, decisive nod. Chase sniffed rosewater on the wind. "Right," the lieutenant said, as if having deciphered a garbled message over a faulty land-line.
"Who is he? Any idea?"
"Not yet. We're hoping to find out."
"I'll bet you are," Chase muttered.
"I beg your pardon?"
Chase wasn't good at placing American accents but this one sounded to him to be cultured New England, very gentle, polite, with hardly any inflection. The gentle politeness, he suspected, was an exceedingly thin veneer.
"He's Russian, isn't he?"
Lieutenant Madden's eyes shifted in Banting's general direction, then snapped back. "Yes . . . that is, we believe so."
It would take a stick of dynamite in every orifice to make the American offer a candid opinion, Chase felt. He said, "You seem very anxious to get hold of him, considering you've no idea who he is."
"Anxious? In what way?"
"You've sent an aircraft two thousand miles on a special flight. You've come personally to oversee the operation. And you're moving somebody in a serious condition who ought not to be moved at all."
"Are you a medical doctor, Dr. Chase? I understood you were a marine biologist." Still the soft voice and gentle tone, but the demarcation between Chase's personal concern and professional standing had been clearly drawn. In other words, butt out, buster.
Professor Banting, ever the pedant, closed ranks. "I don't have to remind you, Dr. Chase, that we've had this discussion once before. This matter has nothing whatsoever to do with you. Both Lieutenant Madden and myself are acting on instructions from a higher authority. Please understand that we are simply doing our best to carry them out."
Chase said stubbornly, "Even if it kills the patient."