Mario Molina

Record year1974

summaryCFC photolysis and the chlorine-catalyzed ozone-depletion mechanism. 1974 coauthorship, CFC lifetimes of 40–150 years, photolytic chlorine production, and catalytic ozone destruction.

M rationaleThe Nature original abstract directly supports the mechanism, lifetime, and coauthorship; Nobel materials only check the shared field. Take M6.5 for a mechanism that changed understanding of global atmospheric-chemistry risk.

attribution rationaleMolina 0.31, Rowland 0.31, Crutzen 0.08, other scientific prior tradition 0.12, laboratory support 0.07, UCI 0.04, unresolved 0.07.

overlap boundaryThe coauthored 1974 Nature article proposed long CFC persistence, stratospheric photolysis producing chlorine atoms, and catalytic ozone destruction; it does not claim Crutzen’s independent NOx work, the 1985 ozone-hole discovery, subsequent heterogeneous chemistry, or benefits of global agreements.

Evidence gapsNo laboratory notebooks document the article’s specific calculations or the internal division of work between Rowland and Molina; shares of CFC-emissions data and early observational sources still await a citation chain.

Record year1986

summaryExperimental validation of chlorine-activation reactions on polar ice-particle surfaces. A JPL team demonstrated reactions on ice in the laboratory, with four authors and comparison with 1987 observations.

M rationaleA contemporaneous JPL report and Molina’s Nobel lecture explicitly identify the four-person experiment, Solomon’s precursor role, and subsequent independent replication; take M6.1 for key experimental validation of a mechanism.

attribution rationaleMolina 0.23, Tso 0.14, Luisa Molina 0.14, Wang 0.14, Solomon 0.08, PSC prior tradition 0.04, JPL team 0.10, other prior tradition 0.08, JPL 0.03, unresolved 0.02.

overlap boundaryIce-particle-surface chlorine-activation experiments explaining polar ozone loss in 1986–1988, centered on the 1987 four-author Science article; it does not claim discovery of the ozone hole, Solomon’s earlier PSC hypothesis, or the full mechanism of polar ozone.

Evidence gapsLaboratory records have not been read for the four authors’ specific division of experimental design, instrumentation, and analysis.

Record year2000

summaryMexico City integrated air-quality assessment and policy plan. Submitted a 2001–2010 integrated strategy to government, industry, and academia, with Mario and Luisa and an interdisciplinary team collaborating.

M rationaleAn MIT report establishes the final report and Mario/Luisa with a multinational team; a Mexico City official PDF establishes coordination by the two and government commissioning. Take M5.8 for a delivered integrated assessment.

attribution rationaleMario Molina 0.10, Luisa Molina 0.14, interdisciplinary team 0.34, government institutions 0.16, research institutions 0.12, prior tradition 0.09, unresolved 0.05.

overlap boundaryMexico City’s integrated air-quality strategy in 2000–2004 for 2001–2010, the 2002 integrated-assessment work, and preparation for second-phase implementation; counts only interdisciplinary assessment and concrete reports, not government policy, emissions changes, or health outcomes.

Evidence gapsAuthors of each report chapter, model data, and the policy-adoption chain have not been analyzed item by item; actual emissions, exposure, and health outcomes do not enter this point assessment.

Record year1974

summaryCross-scientific, policy, and media communication of CFC–ozone risk. After the article, the two decided to communicate the risk to scientists, policymakers, and news media.

M rationaleA UC page cites Molina’s own account that the two article authors decided after publication to communicate with three types of audience; there was actual public service, but records of each hearing/assessment are currently absent, so take M5.0 for a bounded communication residual.

attribution rationaleMolina 0.20, Rowland 0.20, assessment-science community 0.18, policy personnel 0.13, media 0.10, prior tradition 0.08, institutions 0.04, unresolved 0.07.

overlap boundaryAfter the 1974 article, public knowledge service by Molina and Rowland continuously communicating CFC–ozone risk to other scientists, policymakers, and media; counts only the residual of scientific explanation and agenda setting, not regulation making, the Montreal Protocol, corporate substitution, or ozone recovery.

Evidence gapsRecords are lacking for each hearing, technical assessment, media text, and the Rowland/Molina division of work.