# Most-cited Earth and Planetary Sciences papers of 2017, with free PDFs

The 25 most-cited Earth and Planetary Sciences research papers published in 2017, ranked by citations in OpenAlex, with their original abstracts and free PDFs where available.

1. [The Modern-Era Retrospective Analysis for Research and Applications, Version 2 (MERRA-2)](https://nerdi.pages.dev/paper/W2611772571) · 9,079 citations
2. [Climatologies at high resolution for the earth’s land surface areas](https://nerdi.pages.dev/paper/W3104895181) · 3,645 citations
3. [Cellular Scaling Rules for the Brains of Marsupials: Not as “Primitive” as Expected](https://nerdi.pages.dev/paper/W2581259096) · 2,645 citations
4. [A Review of Global Precipitation Data Sets: Data Sources, Estimation, and Intercomparisons](https://nerdi.pages.dev/paper/W2773928770) · 1,956 citations
5. [MIX: a mosaic Asian anthropogenic emission inventory under the international collaboration framework of the MICS-Asia and HTAP](https://nerdi.pages.dev/paper/W2575591472) · 1,627 citations
6. [The Ice, Cloud, and land Elevation Satellite-2 (ICESat-2): Science requirements, concept, and implementation](https://nerdi.pages.dev/paper/W2568967893) · 1,384 citations
7. [The Weather Research and Forecasting Model: Overview, System Efforts, and Future Directions](https://nerdi.pages.dev/paper/W2569758175) · 1,323 citations
8. [Anthropogenic emission inventories in China: a review](https://nerdi.pages.dev/paper/W2779788985) · 1,312 citations
9. [Vertically extensive and unstable magmatic systems: A unified view of igneous processes](https://nerdi.pages.dev/paper/W2603981417) · 1,247 citations
10. [Methods for Summarizing Radiocarbon Datasets](https://nerdi.pages.dev/paper/W2770819002) · 1,184 citations · Free PDF
11. [How many species of mammals are there?](https://nerdi.pages.dev/paper/W2788008213) · 1,128 citations
12. [MSWEP: 3-hourly 0.25° global gridded precipitation (1979–2015) by merging gauge, satellite, and reanalysis data](https://nerdi.pages.dev/paper/W2397311736) · 1,115 citations · Free PDF
13. [Recent advances in understanding secondary organic aerosol: Implications for global climate forcing](https://nerdi.pages.dev/paper/W2614250595) · 1,070 citations
14. [Potential high- T c superconducting lanthanum and yttrium hydrides at high pressure](https://nerdi.pages.dev/paper/W2681350253) · 1,069 citations
15. [BedMachine v3: Complete Bed Topography and Ocean Bathymetry Mapping of Greenland From Multibeam Echo Sounding Combined With Mass Conservation](https://nerdi.pages.dev/paper/W2756297478) · 1,003 citations · Free PDF
16. [Hydrogen Clathrate Structures in Rare Earth Hydrides at High Pressures: Possible Route to Room-Temperature Superconductivity](https://nerdi.pages.dev/paper/W2753773550) · 959 citations
17. [Doubling of coastal flooding frequency within decades due to sea-level rise](https://nerdi.pages.dev/paper/W2608895276) · 929 citations · Free PDF
18. [A new map of permafrost distribution on the Tibetan Plateau](https://nerdi.pages.dev/paper/W2534439660) · 925 citations · Free PDF
19. [Greater role for Atlantic inflows on sea-ice loss in the Eurasian Basin of the Arctic Ocean](https://nerdi.pages.dev/paper/W2604311007) · 914 citations
20. [Global-scale evaluation of 22 precipitation datasets using gauge observations and hydrological modeling](https://nerdi.pages.dev/paper/W2771159036) · 895 citations
21. [Global anthropogenic emissions of particulate matter including black carbon](https://nerdi.pages.dev/paper/W2537132227) · 879 citations
22. [Improved estimates of ocean heat content from 1960 to 2015](https://nerdi.pages.dev/paper/W2594584909) · 875 citations
23. [Future climate forcing potentially without precedent in the last 420 million years](https://nerdi.pages.dev/paper/W2605120720) · 872 citations · Free PDF
24. [Zircon: The Metamorphic Mineral](https://nerdi.pages.dev/paper/W2614937491) · 810 citations
25. [Seaweed production: overview of the global state of exploitation, farming and emerging research activity](https://nerdi.pages.dev/paper/W2761880702) · 762 citations

Canonical page: https://nerdi.pages.dev/papers/earth-and-planetary-sciences/most-cited-2017