Ice nucleation by surrogates of Martian mineral dust: What can we learn about Mars without leaving Earth?
Water and carbon dioxide ice clouds have been observed in the Martian atmosphere where they are dynamic parts of that planet's water and carbon cycles. Many Martian atmospheric models struggle to correctly predict clouds and, with insufficient data, some use untested simplifications that cloud...
| المؤلفون الرئيسيون: | , , , , , , , , |
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| مؤلفون آخرون: | |
| التنسيق: | مقال |
| اللغة: | en_US |
| منشور في: |
American Geophysical Union
2014
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| الوصول للمادة أونلاين: | http://hdl.handle.net/1721.1/87715 https://orcid.org/0000-0003-1851-8740 https://orcid.org/0000-0002-0828-8286 |
| _version_ | 1826218088645787648 |
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| author | Cziczo, Daniel James Garimella, Sarvesh Raddatz, Michael Hoehler, Kristina Schnaiter, Martin Saathoff, Harald Moehler, Ottmar Abbatt, Jonathan P. D. Ladino, Luis A. |
| author2 | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences |
| author_facet | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Cziczo, Daniel James Garimella, Sarvesh Raddatz, Michael Hoehler, Kristina Schnaiter, Martin Saathoff, Harald Moehler, Ottmar Abbatt, Jonathan P. D. Ladino, Luis A. |
| author_sort | Cziczo, Daniel James |
| collection | MIT |
| description | Water and carbon dioxide ice clouds have been observed in the Martian atmosphere where they are dynamic parts of that planet's water and carbon cycles. Many Martian atmospheric models struggle to correctly predict clouds and, with insufficient data, some use untested simplifications that cloud formation occurs exactly at the saturation point of the condensed phase or at the same conditions as terrestrial cirrus clouds. To address the lack of data, we have utilized an 84 m3 cloud chamber built for studies of high altitude cirrus and polar stratospheric ice clouds in the Earth's atmosphere and adapted to Martian conditions. Using this chamber, we have been able to produce water ice clouds from aerosol in an inert and low pressure atmosphere mimicking that of Mars. At temperatures between 189 and 215 K, we investigated cloud formation by mineral dust particulates of a similar composition and size to those found on Mars. We show that these surrogate materials nucleate effectively at the higher temperatures, with minor temperature dependence at saturations ratios with respect to the ice phase of ~1.1, similar to what has been found for terrestrial cirrus. At the lower end of the temperature range, this saturation rises to ~1.9, a result consistent with previous studies. |
| first_indexed | 2024-09-23T17:13:58Z |
| format | Article |
| id | mit-1721.1/87715 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T17:13:58Z |
| publishDate | 2014 |
| publisher | American Geophysical Union |
| record_format | dspace |
| spelling | mit-1721.1/877152022-10-03T11:16:11Z Ice nucleation by surrogates of Martian mineral dust: What can we learn about Mars without leaving Earth? Cziczo, Daniel James Garimella, Sarvesh Raddatz, Michael Hoehler, Kristina Schnaiter, Martin Saathoff, Harald Moehler, Ottmar Abbatt, Jonathan P. D. Ladino, Luis A. Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Cziczo, Daniel James Cziczo, Daniel James Garimella, Sarvesh Water and carbon dioxide ice clouds have been observed in the Martian atmosphere where they are dynamic parts of that planet's water and carbon cycles. Many Martian atmospheric models struggle to correctly predict clouds and, with insufficient data, some use untested simplifications that cloud formation occurs exactly at the saturation point of the condensed phase or at the same conditions as terrestrial cirrus clouds. To address the lack of data, we have utilized an 84 m3 cloud chamber built for studies of high altitude cirrus and polar stratospheric ice clouds in the Earth's atmosphere and adapted to Martian conditions. Using this chamber, we have been able to produce water ice clouds from aerosol in an inert and low pressure atmosphere mimicking that of Mars. At temperatures between 189 and 215 K, we investigated cloud formation by mineral dust particulates of a similar composition and size to those found on Mars. We show that these surrogate materials nucleate effectively at the higher temperatures, with minor temperature dependence at saturations ratios with respect to the ice phase of ~1.1, similar to what has been found for terrestrial cirrus. At the lower end of the temperature range, this saturation rises to ~1.9, a result consistent with previous studies. MIT International Science and Technology Initiatives (MISTI-Germany) EUROCHAMP-2 (Transnational Access Activity E2-2012- 05-14-0075) Deutsche Forschungsgemeinschaft (DFG HALO priority program SPP 1294 (contract number MOEH 668/1-2)) 2014-06-10T14:17:03Z 2014-06-10T14:17:03Z 2013-09 2013-08 Article http://purl.org/eprint/type/JournalArticle 21699097 http://hdl.handle.net/1721.1/87715 Cziczo, Daniel J., Sarvesh Garimella, Michael Raddatz, Kristina Hoehler, Martin Schnaiter, Harald Saathoff, Ottmar Moehler, Jonathan P. D. Abbatt, and Luis A. Ladino. “Ice Nucleation by Surrogates of Martian Mineral Dust: What Can We Learn About Mars Without Leaving Earth?” Journal of Geophysical Research: Planets 118 (September 2013): 1945-1954. ©2013. American Geophysical Union. https://orcid.org/0000-0003-1851-8740 https://orcid.org/0000-0002-0828-8286 en_US http://dx.doi.org/10.1002/jgre.20155 Journal of Geophysical Research: Planets Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Geophysical Union Prof. Cziczo via Chris Sherratt |
| spellingShingle | Cziczo, Daniel James Garimella, Sarvesh Raddatz, Michael Hoehler, Kristina Schnaiter, Martin Saathoff, Harald Moehler, Ottmar Abbatt, Jonathan P. D. Ladino, Luis A. Ice nucleation by surrogates of Martian mineral dust: What can we learn about Mars without leaving Earth? |
| title | Ice nucleation by surrogates of Martian mineral dust: What can we learn about Mars without leaving Earth? |
| title_full | Ice nucleation by surrogates of Martian mineral dust: What can we learn about Mars without leaving Earth? |
| title_fullStr | Ice nucleation by surrogates of Martian mineral dust: What can we learn about Mars without leaving Earth? |
| title_full_unstemmed | Ice nucleation by surrogates of Martian mineral dust: What can we learn about Mars without leaving Earth? |
| title_short | Ice nucleation by surrogates of Martian mineral dust: What can we learn about Mars without leaving Earth? |
| title_sort | ice nucleation by surrogates of martian mineral dust what can we learn about mars without leaving earth |
| url | http://hdl.handle.net/1721.1/87715 https://orcid.org/0000-0003-1851-8740 https://orcid.org/0000-0002-0828-8286 |
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