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A remnant planetary core in the hot-Neptune desert 期刊论文
NATURE, 2020, 583 (7814) : 39-+
作者:  David J. Armstrong;  Thé;  o A. Lopez;  Vardan Adibekyan;  Richard A. Booth;  Edward M. Bryant;  Karen A. Collins;  Magali Deleuil;  Alexandre Emsenhuber;  Chelsea X. Huang;  George W. King;  Jorge Lillo-Box;  Jack J. Lissauer;  Elisabeth Matthews;  Olivier Mousis;  Louise D. Nielsen;  Hugh Osborn;  Jon Otegi;  Nuno C. Santos;  ;  rgio G. Sousa;  Keivan G. Stassun;  Dimitri Veras;  Carl Ziegler;  Jack S. Acton;  Jose M. Almenara;  David R. Anderson;  David Barrado;  Susana C. C. Barros;  Daniel Bayliss;  Claudia Belardi;  Francois Bouchy;  ;  sar Briceñ;  o;  Matteo Brogi;  David J. A. Brown;  Matthew R. Burleigh;  Sarah L. Casewell;  Alexander Chaushev;  David R. Ciardi;  Kevin I. Collins;  Knicole D. Coló;  n;  Benjamin F. Cooke;  Ian J. M. Crossfield;  Rodrigo F. Dí;  az;  Elisa Delgado Mena;  Olivier D. S. Demangeon;  Caroline Dorn;  Xavier Dumusque;  Philipp Eigmü;  ller;  Michael Fausnaugh;  Pedro Figueira;  Tianjun Gan;  Siddharth Gandhi;  Samuel Gill;  Erica J. Gonzales;  Michael R. Goad;  Maximilian N. Gü;  nther;  Ravit Helled;  Saeed Hojjatpanah;  Steve B. Howell;  James Jackman;  James S. Jenkins;  Jon M. Jenkins;  Eric L. N. Jensen;  Grant M. Kennedy;  David W. Latham;  Nicholas Law;  Monika Lendl;  Michael Lozovsky;  Andrew W. Mann;  Maximiliano Moyano;  James McCormac;  Farzana Meru;  Christoph Mordasini;  Ares Osborn;  Don Pollacco;  Didier Queloz;  Liam Raynard;  George R. Ricker;  Pamela Rowden;  Alexandre Santerne;  Joshua E. Schlieder;  Sara Seager;  Lizhou Sha;  Thiam-Guan Tan;  Rosanna H. Tilbrook;  Eric Ting;  Sté;  phane Udry;  Roland Vanderspek;  Christopher A. Watson;  Richard G. West;  Paul A. Wilson;  Joshua N. Winn;  Peter Wheatley;  Jesus Noel Villasenor;  Jose I. Vines;  Zhuchang Zhan
收藏  |  浏览/下载:18/0  |  提交时间:2020/07/06

The interiors of giant planets remain poorly understood. Even for the planets in the Solar System, difficulties in observation lead to large uncertainties in the properties of planetary cores. Exoplanets that have undergone rare evolutionary processes provide a route to understanding planetary interiors. Planets found in and near the typically barren hot-Neptune '  desert'  (1,2)(a region in mass-radius space that contains few planets) have proved to be particularly valuable in this regard. These planets include HD149026b(3), which is thought to have an unusually massive core, and recent discoveries such as LTT9779b(4)and NGTS-4b(5), on which photoevaporation has removed a substantial part of their outer atmospheres. Here we report observations of the planet TOI-849b, which has a radius smaller than Neptune'  s but an anomalously large mass of39.1-2.6+2.7Earth masses and a density of5.2-0.8+0.7grams per cubic centimetre, similar to Earth'  s. Interior-structure models suggest that any gaseous envelope of pure hydrogen and helium consists of no more than3.9-0.9+0.8 per cent of the total planetary mass. The planet could have been a gas giant before undergoing extreme mass loss via thermal self-disruption or giant planet collisions, or it could have avoided substantial gas accretion, perhaps through gap opening or late formation(6). Although photoevaporation rates cannot account for the mass loss required to reduce a Jupiter-like gas giant, they can remove a small (a few Earth masses) hydrogen and helium envelope on timescales of several billion years, implying that any remaining atmosphere on TOI-849b is likely to be enriched by water or other volatiles from the planetary interior. We conclude that TOI-849b is the remnant core of a giant planet.


Observations of TOI-849b reveal a radius smaller than Neptune'  s but a large mass of about 40 Earth masses, indicating that the planet is the remnant core of a gas giant.


  
The 2019 Mississippi and Missouri River Flooding and Its Impact on Atmospheric Boundary Layer Dynamics 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (6)
作者:  Pal, Sandip;  Lee, Temple R.;  Clark, Nicholas E.
收藏  |  浏览/下载:6/0  |  提交时间:2020/07/02
atmospheric boundary layer  land-atmosphere feedback processes  flooding  rawinsonde  soil moisture  boundary layer features  
The atmosphere of Mars as observed by InSight 期刊论文
NATURE GEOSCIENCE, 2020, 13 (3) : 190-+
作者:  Banfield, Don;  Spiga, Aymeric;  Newman, Claire;  Forget, Francois;  Lemmon, Mark;  Lorenz, Ralph;  Murdoch, Naomi;  Viudez-Moreiras, Daniel;  Pla-Garcia, Jorge;  Garcia, Raphael F.;  Lognonne, Philippe;  Karatekin, Ozgur;  Perrin, Clement;  Martire, Leo;  Teanby, Nicholas;  Hove, Bart Van;  Maki, Justin N.;  Kenda, Balthasar;  Mueller, Nils T.;  Rodriguez, Sebastien;  Kawamura, Taichi;  McClean, John B.;  Stott, Alexander E.;  Charalambous, Constantinos;  Millour, Ehouarn;  Johnson, Catherine L.;  Mittelholz, Anna;  Maattanen, Anni;  Lewis, Stephen R.;  Clinton, John;  Staehler, Simon C.;  Ceylan, Savas;  Giardini, Domenico;  Warren, Tristram;  Pike, William T.;  Daubar, Ingrid;  Golombek, Matthew;  Rolland, Lucie;  Widmer-Schnidrig, Rudolf;  Mimoun, David;  Beucler, Eric;  Jacob, Alice;  Lucas, Antoine;  Baker, Mariah;  Ansan, Veronique;  Hurst, Kenneth;  Mora-Sotomayor, Luis;  Navarro, Sara;  Torres, Josefina;  Lepinette, Alain;  Molina, Antonio;  Marin-Jimenez, Mercedes;  Gomez-Elvira, Javier;  Peinado, Veronica;  Rodriguez-Manfredi, Jose-Antonio;  Carcich, Brian T.;  Sackett, Stephen;  Russell, Christopher T.;  Spohn, Tilman;  Smrekar, Suzanne E.;  Banerdt, W. Bruce
收藏  |  浏览/下载:14/0  |  提交时间:2020/05/13
River bank instability from unsustainable sand mining in the lower Mekong River 期刊论文
NATURE SUSTAINABILITY, 2020, 3 (3) : 217-+
作者:  Hackney, Christopher R.;  Darby, Stephen E.;  Parsons, Daniel R.;  Leyland, Julian;  Best, James L.;  Aalto, Rolf;  Nicholas, Andrew P.;  Houseago, Robert C.
收藏  |  浏览/下载:9/0  |  提交时间:2020/05/13
Comment on "The global tree restoration potential" 期刊论文
SCIENCE, 2019, 366 (6463)
作者:  Veldman, Joseph W.;  Aleman, Julie C.;  Alvarado, Swanni T.;  Anderson, T. Michael;  Archibald, Sally;  Bond, William J.;  Boutton, Thomas W.;  Buchmann, Nina;  Buisson, Elise;  Canadell, Josep G.;  Dechoum, Michele de Sa;  Diaz-Toribio, Milton H.;  Durigan, Giselda;  Ewel, John J.;  Fernandes, G. Wilson;  Fidelis, Alessandra;  Fleischman, Forrest;  Good, Stephen P.;  Griffith, Daniel M.;  Hermann, Julia-Maria;  Hoffmann, William A.;  Le Stradic, Soizig;  Lehmann, Caroline E. R.;  Mahy, Gregory;  Nerlekar, Ashish N.;  Nippert, Jesse B.;  Noss, Reed F.;  Osborne, Colin P.;  Overbeck, Gerhard E.;  Parr, Catherine L.;  Pausas, Juli G.;  Pennington, R. Toby;  Perring, Michael P.;  Putz, Francis E.;  Ratnam, Jayashree;  Sankaran, Mahesh;  Schmidt, Isabel B.;  Schmitt, Christine B.;  Silveira, Fernando A. O.;  Staver, A. Carla;  Stevens, Nicola;  Still, Christopher J.;  Stromberg, Caroline A. E.;  Temperton, Vicky M.;  Varner, J. Morgan;  Zaloumis, Nicholas P.
收藏  |  浏览/下载:16/0  |  提交时间:2019/11/27
Kilauea lava fuels phytoplankton bloom in the North Pacific Ocean 期刊论文
SCIENCE, 2019, 365 (6457) : 1040-+
作者:  Wilson, Samuel T.;  Hawco, Nicholas J.;  Armbrust, E. Virginia;  Barone, Benedetto;  Bjorkman, Karin M.;  Boysen, Angela K.;  Burgos, Macarena;  Burrell, Timothy J.;  Casey, John R.;  DeLong, Edward F.;  Dugenne, Mathilde;  Dutkiewicz, Stephanie;  Dyhrman, Sonya T.;  Ferron, Sara;  Follows, Michael J.;  Foreman, Rhea K.;  Funkey, Carolina P.;  Harke, Matthew J.;  Henke, Britt A.;  Hill, Christopher N.;  Hynes, Annette M.;  Ingalls, Anitra E.;  Jahn, Oliver;  Kelly, Rachel L.;  Knapp, Angela N.;  Letelier, Ricardo M.;  Ribalet, Francois;  Shimabukuro, Eric M.;  Tabata, Ryan K. S.;  Turk-Kubo, Kendra A.;  White, Angelicque E.;  Zehr, Jonathan P.;  John, Seth;  Karl, David M.
收藏  |  浏览/下载:13/0  |  提交时间:2019/11/27
Substrate processing by the Cdc48 ATPase complex is initiated by ubiquitin unfolding 期刊论文
SCIENCE, 2019, 365 (6452) : 462-+
作者:  Twomey, Edward C.;  Ji, Zhejian;  Wales, Thomas E.;  Bodnar, Nicholas O.;  Ficarro, Scott B.;  Marto, Jarrod A.;  Engen, John R.;  Rapoport, Tom A.
收藏  |  浏览/下载:5/0  |  提交时间:2019/11/27
When pets become pests: the role of the exotic pet trade in producing invasive vertebrate animals 期刊论文
FRONTIERS IN ECOLOGY AND THE ENVIRONMENT, 2019, 17 (6) : 323-330
作者:  Lockwood, Julie L.;  Welbourne, Dustin J.;  Romagosa, Christina M.;  Cassey, Phillip;  Mandrak, Nicholas E.;  Strecker, Angela;  Leung, Brian;  Stringham, Oliver C.;  Udell, Bradley;  Episcopio-Sturgeon, Diane J.;  Tlusty, Michael F.;  Sinclair, James;  Springborn, Michael R.;  Pienaar, Elizabeth F.;  Rhyne, Andrew L.;  Keller, Reuben
收藏  |  浏览/下载:9/0  |  提交时间:2019/11/27
Social capital and resilience to drought among smallholding farmers in Sri Lanka 期刊论文
CLIMATIC CHANGE, 2019, 155 (2) : 195-213
作者:  Carrico, Amanda R.;  Truelove, Heather Barnes;  Williams, Nicholas E.
收藏  |  浏览/下载:8/0  |  提交时间:2019/11/27
Genome-wide analysis of dental caries and periodontitis combining clinical and self-reported data 期刊论文
NATURE COMMUNICATIONS, 2019, 10
作者:  Shungin, Dmitry;  Hawort, Simon;  Divaris, Kimon;  Agler, Cary S.;  Kamatani, Yoichiro;  Lee, Myoung Keun;  Grinde, Kelsey;  Hindy, George;  Alaraudanjoki, Viivi;  Pesonen, Paula;  Teumer, Alexander;  Holtfreter, Birte;  Sakaue, Saori;  Hirata, Jun;  Yu, Yau-Hua;  Ridker, Paul M.;  Giulianini, Franco;  Chasman, Daniel, I;  Magnusson, Patrik K. E.;  Sudo, Takeaki;  Okada, Yukinori;  Voelker, Uwe;  Kocher, Thomas;  Anttonen, Vuokko;  Laitala, Marja-Liisa;  Orho-Melander, Marju;  Sofer, Tamar;  Shaffer, John R.;  Vieira, Alexandre;  Marazita, Mary L.;  Kubo, Michiaki;  Furuichi, Yasushi;  North, Kari E.;  Offenbacher, Steve;  Ingelsson, Erik;  FrankS, Paul W.;  Timpson, Nicholas J.;  Johansson, Ingegerd
收藏  |  浏览/下载:14/0  |  提交时间:2019/11/27