-
Notifications
You must be signed in to change notification settings - Fork 3
/
Copy pathoverview.html
301 lines (278 loc) · 18.4 KB
/
overview.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
<!DOCTYPE html>
<!--[if IEMobile 7]><html class="iem7" lang="en" dir="ltr"><![endif]-->
<!--[if lte IE 6]><html class="lt-ie9 lt-ie8 lt-ie7" lang="en" dir="ltr"><![endif]-->
<!--[if (IE 7)&(!IEMobile)]><html class="lt-ie9 lt-ie8" lang="en" dir="ltr"><![endif]-->
<!--[if IE 8]><html class="lt-ie9" lang="en" dir="ltr"><![endif]-->
<!--[if (gte IE 9)|(gt IEMobile 7)]><!--><html lang="en" dir="ltr"><!--<![endif]-->
<head>
<meta charset="utf-8" />
<!--<base href="/overview" />-->
<link rel="shortcut icon" href="img/geos-chem-logo-favicon.png" />
<link rel="canonical" href="overview.html" />
<link rel="shortlink" href="overview.html" />
<meta property="og:type" content="article" />
<meta property="og:title" content="Overview" />
<meta name="twitter:card" content="summary" />
<meta name="twitter:title" content="GEOS-Chem Overview" />
<meta name="twitter:description" content="GEOS-Chem Overview" />
<meta name="twitter:image" content="https://geos-chem.org" />
<title>GEOS-Chem Overview</title>
<meta http-equiv="x-ua-compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link type="text/css" rel="stylesheet" href="css/css_xE-rWrJf-fncB6ztZfd2huxqgxu4WO-qwma6Xer30m4%EF%B9%96m=1675397288.css" media="all" />
<link type="text/css" rel="stylesheet" href="css/css_1kR8T1_c-l5pBT6ZwbDT7BFda-4fyqW9Jjum29_2IY8%EF%B9%96m=1675397312.css" media="all" />
<link type="text/css" rel="stylesheet" href="css/css_YnlUIvHP13qgpYEqubzE8JyDwlSxUnVibfnVkSoSDb0%EF%B9%96m=1675397273.css" media="all" />
<link type="text/css" rel="stylesheet" href="css/css_Ku-3OcT9qU9h7dnGig5e23q6EVryY8orK4wzVDxsweE%EF%B9%96m=1675397367.css" media="all" />
<link type="text/css" rel="stylesheet" href="css/css_vprtFTrWyg23GbY50_zJZHWGYMNfS8vsrRS26i4-ISk%EF%B9%96m=1675397406.css" media="screen" />
<link type="text/css" rel="stylesheet" href="css/css_dW-aNNrctRhQNc-KECjtQd0PxuW-h19IEum-TX2MeEk%EF%B9%96m=1675397301.css" media="print" />
<link type="text/css" rel="stylesheet" href="css/css_SH2Lx3Qprh0GZo_9xRp85U9NsWfkSXn_Bi-rJoMY1sw%EF%B9%96m=1675397273.css" media="screen" />
<link type="text/css" rel="stylesheet" href="css/css_uaIDKcYMUK5osSQXuirpr3ZleXtnnpBN-eiECm7N0M0%EF%B9%96m=1675397395.css" media="all" />
<link type="text/css" rel="stylesheet" href="css/blue_sky.css" media="all" />
<link type="text/css" rel="stylesheet" href="css/responsive.blue_sky.css" media="all" />
<link type="text/css" rel="stylesheet" href="css/geos-chem.css" media="all"/>
<script type="text/javascript" src="dropdown-menu.js"></script>
<!--[if lte IE 8]>
<script type="text/javascript">
var os_c = document.createElement;os_c('header');os_c('nav');os_c('section');os_c('article');os_c('aside');os_c('footer');os_c('hgroup');os_c('figure');
</script>
<![endif]-->
</head>
<div id="page" class="container page header-main content-top footer-none">
<div id="page-wrapper">
<!--header regions beg-->
<header id="header" class="clearfix" role="banner">
<div id="header-container">
<div id="header-panels" class="at-panel gpanel panel-display three-col clearfix">
<div class="region region-header-second"><div class="region-inner clearfix">
<section id="block-boxes-1630413211" class="block block-boxes block-boxes-os_boxes_html" module="boxes" delta="1630413211">
<div class="block-inner clearfix">
<h2 class="block-title" ng-non-bindable="">Site-Logo</h2>
<div class="block-content content" ng-non-bindable="">
<div id='boxes-box-1630413211' class='boxes-box'>
<div class="boxes-box-content">
<p style="text-align:center"><a href="index.html" title=""><img alt="Welcome to the GEOS-Chem website" src="img/geos-chem-logo.png" style="width:420px" /></a></p>
</div>
</div>
</div>
</div>
</section>
</div>
</div>
</div>
</div>
</header>
<!--header regions end-->
<!--main menu region beg-->
<div id="menu-bar" class="nav region-menu-bar clearfix">
<nav id="block-os-primary-menu" class="block block-os no-title menu-wrapper menu-bar-wrapper clearfix" module="os" delta="primary-menu">
<script>inlineDropDownMenu();</script>
</nav>
</div>
<!--main menu region end-->
<div id="columns" class="clearfix">
<div class="hg-container">
<div id="content-column" role="main">
<div class="content-inner">
<a name="main-content"></a>
<header id="main-content-header">
<a name="main-content"></a>
<h1 id="page-title" ng-non-bindable="">Overview</h1>
</header>
<!--front panel regions beg-->
<div id="content-panels" class="at-panel gpanel panel-display content clearfix">
<div class="region region-content-top">
<div class="region-inner clearfix">
<div id="block-os-pages-main-content" class="block block-os-pages no-title" module="os_pages" delta="main_content">
<div class="block-inner clearfix">
<div class="block-content content" ng-non-bindable="">
<article id="node-1585688" class="node node-page article clearfix" role="article">
<div class="node-content" ng-non-bindable="">
<div class="field field-name-body field-type-text-with-summary field-label-hidden view-mode-full">
<div class="field-items">
<div class="field-item even">
<p align="justify">
GEOS-Chem enables simulations of atmospheric composition on
local to global scales. It can be used off-line as a 3-D
chemical transport model driven by assimilated meteorological
observations from the Goddard Earth Observing System (GEOS) of
the NASA <a href="http://gmao.gsfc.nasa.gov/"
target="_blank">Global Modeling Assimilation Office
(GMAO)</a>. It can also be used on-line as a chemical module
coupled to weather and climate models. GEOS-Chem is developed
and used by <a href="users.html">hundreds of research groups worldwide </a>as a
versatile tool for application to a wide range of atmospheric
composition problems. It is open-access and can be downloaded
through github. It is also fully supported for use on the
Amazon Web Services cloud.
</p>
<p align="justify">
The off-line version of GEOS-Chem allows immediate simulations
of atmospheric composition for any period from 1979 to present
using the continuous global archive of NASA GEOS data packaged
with GEOS-Chem. The operational GEOS-Forward Processing
product (<a href="https://wiki.seas.harvard.edu/geos-chem/index.php/GEOS-FP"
target="_blank">GEOS-FP</a>) for 2012-present has a horizontal
resolution of 0.25° latitude x 0.3125° longitude with 72
vertical levels. The
<a href="https://wiki.seas.harvard.edu/geos-chem/index.php/MERRA-2"
target="_blank">MERRA-2</a> reanalysis product for
1979-present has a horizontal resolution of 0.5° latitude x
0.625° longitude, again with 72 vertical levels. Off-line
simulations can be conducted with OpenMP shared-memory
parallelization (GEOS-Chem Classic, called GC-Classic) or with
MPI distributed-memory parallelization
(<a href="https://gchp.readthedocs.io" target="_blank">GEOS-Chem
high-performance, called GCHP</a>). GC-Classic operates on a
rectilinear grid and GCHP operates on a cubed-sphere grid. GEOS-Chem
simulations can be conducted globally at the native grid resolution or
at user-selected lower resolution. They can also be conducted
over user-selected regions with dynamic boundary conditions
(nested mode) or in stretched-grid mode with zoom over a
region of interest.
</p>
<p>
On-line applications of GEOS-Chem use the stand-alone
GEOS-Chem chemical module that performs chemistry, aerosol
microphysics, radiation, emissions, and deposition on 1-D
atmospheric columns for any grid specified at run time. In
on-line applications, chemical transport is performed by a
weather or climate model coupled to GEOS-Chem. The emission
component of GEOS-Chem
(<a href="https://hemco.readthedocs.io" target="_blank">HEMCO</a>)
can also be used independently of the rest of GEOS-Chem or as a
generalized data broker in the weather/climate model. GEOS-Chem has in
this manner been coupled with the NASA GEOS Earth System Model (ESM),
the WRF weather model, the Beijing Climate Center ESM, and the NCAR
CESM.
</p>
<p align="justify">
All
<a href="https://wiki.seas.harvard.edu/geos-chem/index.php/GEOS-Chem_versions"
target="_blank">versions of the GEOS-Chem
model </a>use the same standard code maintained by
the <a href="support-team.html" target="_blank">GEOS-Chem
Support Team</a>. Updated versions of this standard code are
released regularly. Detailed GEOS-Chem on-line documentation
is available including
a <a href="https://geos-chem.readthedocs.io/en/stable/geos-chem-shared-docs/supplemental-guides/related-docs.html"
target="_blank">User's Guide</a>. The code is fully modular
and highly parallelized. It is presently being used on several types
of
<a href="https://geos-chem.readthedocs.io/en/latest/getting-started/system-req-hard.html"
target="_blank">Linux-like computing platforms</a> running Ubuntu,
Fedora, Red Hat, Rocky Linux, Alma Linux, Amazon Linux, MacOS, and
similar operating systems. It supports Intel Fortran and the
open-source GNU Fortran compilers.
</p>
<p align="justify">
An adjoint of the GEOS-Chem model is maintained by the
GEOS-Chem community under the direction
of <a href="http://spot.colorado.edu/~henzed"
target="_blank">Adjoint Model Scientist Daven Henze</a> for
inverse modeling, data assimilation, and sensitivity studies. See the
<a href="https://wiki.seas.harvard.edu/geos-chem/index.php/GEOS-Chem_Adjoint"
target="_blank">GEOS-Chem Adjoint web site</a> for more details.
</p>
<p align="justify">
Several
<a href="https://wiki.seas.harvard.edu/geos-chem/index.php/Software_maintained_by_GEOS-Chem_community_members"
target="blank">software tools</a>
facilitate the processing of GEOS-Chem model outputs. This
includes <a href="https://gcpy.readthedocs.io"
target="_blank">GCPy</a>, a package of free and open-source Python
tools specifically designed for GEOS-Chem output analysis and
visualization.
</p>
<p align="justify">
GEOS-Chem is a freely accessible community model. It is owned
and supported by its <a href="users.html">user
community</a> under the purview
of <a href="working-groups.html">Working Groups</a>
and an international <a href="steering-committee.html">Steering Committee</a>. User participation,
responsibility, and feedback are essential. See
our <a href="welcome.html">welcome page for new
users</a>. The model is maintained as a robust
state-of-the-science facility by combining a nimble
grass-roots approach to code development with strong version
control. All development is done by users in support of their
own research needs and then shared with the community. General
management of GEOS-Chem is supported by the US NASA Earth
Science Division, the Canadian National Science and
Engineering Research Council, and the Nanjing University of
Information Sciences and Technology.
</p>
</div>
</div>
</div>
</div>
</article>
</div>
</div>
</div>
</div>
</div>
</div>
<!--front panel regions end-->
</div>
</div>
</div>
</div>
<!--footer region beg-->
<footer id="footer" class="clearfix" role="contentinfo">
<!-- Three column 3x33 Gpanel -->
<div class="at-panel gpanel panel-display footer clearfix">
<div class="region region-footer-bottom">
<div class="region-inner clearfix">
<div id="block-boxes-1616879798" class="block block-boxes block-boxes-os_boxes_media no-title" module="boxes" delta="1616879798">
<div class="block-inner clearfix">
<div class="block-content content">
<div id='boxes-box-1616879798' class='boxes-box'>
<div class="boxes-box-content">
<div id="file-3900146" class="file file-html file-html-embed">
<h2 class="element-invisible"><a href="">css-brand</a></h2>
<div class="content">
<div class="file-info">
</div>
<div class="field field-name-field-html-code field-type-text-long field-label-hidden view-mode-full">
<div class="field-items">
<div class="field-item even">
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<!--footer region end-->
</footer>
</div>
</div>
<!--page area ends-->
<div id="extradiv"></div>
</div>
<!-- /page_wrap -->
<script src="https://static.projects.iq.harvard.edu/profiles/openscholar/libraries/respondjs/respond.min.js?rpidw0"></script>
<script src="https://static.projects.iq.harvard.edu/files/js/js_s7yA-hwRxnKty__ED6DuqmTMKG39xvpRyrtyCrbWH4M.js?m=1675397499"></script>
<script>jQuery.extend(Drupal.settings, {"basePath":"\/","pathPrefix":"","setHasJsCookie":0,"ajaxPageState":{"theme":"hwpi_classic","theme_token":"_6fb0ek-d3DNHvu__ay82XqKvLZnQF2zUrGWRwUeZ2Q"},"colorbox":{"opacity":"0.85","current":"{current} of {total}","previous":"\u00ab Prev","next":"Next \u00bb","close":"Close","maxWidth":"98%","maxHeight":"98%","fixed":true,"mobiledetect":true,"mobiledevicewidth":"480px"},"jcarousel":{"ajaxPath":"https:\/\/geos-chem.seas.harvard.edu\/jcarousel\/ajax\/views"},"spaces":{"id":"1585652","path":"Welcome to the GEOS-Chem Web Site"},"os_ga":{"trackOutbound":1,"trackMailto":1,"trackDownload":1,"trackDownloadExtensions":"7z|aac|arc|arj|asf|asx|avi|bin|csv|docx?|exe|flv|gif|gz|gzip|hqx|jar|jpe?g|js|mp(2|3|4|e?g)|mov(ie)?|msi|msp|pdf|phps|png|ppt|qtm?|ra(m|r)?|sea|sit|tar|tgz|torrent|txt|wav|wma|wmv|wpd|xlsx?|xml|z|zip","trackNavigation":1},"paths":{"api":"\/api","siteCreationForm":"\/profiles\/openscholar\/modules\/frontend\/os_site_creation\/templates","siteCreationModuleRoot":"\/profiles\/openscholar\/modules\/frontend\/os_site_creation","hasOsId":false},"user":{"uid":0,"name":null},"admin_panel":{"purl_base_domain":"https:\/\/projects.iq.harvard.edu","base_domain":"https:\/\/geos-chem.seas.harvard.edu"},"version":{"siteCreationForm":"1.0.4"},"site_creation":{"subsite_types":{"personal":"personal","project":"project","department":"department"},"privacy_levels":{"0":"Public on the web. \u003Cbr\u003E\u003Cspan class=\u0022description\u0022\u003EAnyone on the Internet can view your site. Your site will show in search results. No sign-in required.\u003C\/span\u003E","2":"Anyone with the link. \u003Cbr\u003E\u003Cspan class=\u0022description\u0022\u003EAnyone who has the URL to your site can view your site. Your site will not be indexed by search engines.\u003C\/span\u003E","1":"Site members only. \u003Cbr\u003E\u003Cspan class=\u0022description\u0022\u003EThis setting can be useful during site creation. Your site will not be indexed by search engines.\u003C\/span\u003E","presets":{"os_department_minimal":{"name":"os_department_minimal","title":"Minimal","description":"Blank site with no pre-set menu links or pages.","site_type":"department"},"os_department":{"name":"os_department","title":"Academic","description":"Pre-set menu links and pages: Academics, Research, Activities, People, Resources, News \u0026amp; Events, About","site_type":"department"},"os_project":{"name":"os_project","title":"Minimal","description":"Blank site with no pre-set menu links or pages.","site_type":"project"},"os_scholar":{"name":"os_scholar","title":"Minimal","description":"Blank site with no pre-set menu links or pages.","site_type":"personal"},"osllc_preset_gradstudent":{"name":"osllc_preset_gradstudent","title":"Grad Student\/Adjunct","description":"A site for grad students or adjuncts currently in the job market","site_type":"personal"},"osllc_preset_medical_professional":{"name":"osllc_preset_medical_professional","title":"Medical Professional","description":"A site for doctors and other medical professionals.","site_type":"personal"},"osllc_preset_project":{"name":"osllc_preset_project","title":"Project Site","description":"A site for a project, separate from any individual involved.","site_type":"personal"},"hwp_administrative":{"name":"hwp_administrative","title":"Administrative","description":"The Harvard Web Publishing standard Adminstrative Department site.","site_type":"department"},"hwp_lab_research_group":{"name":"hwp_lab_research_group","title":"Lab\/Research Group","description":"The Harvard Web Publishing standard Lab and Research Group site.","site_type":"project"},"hwp_project":{"name":"hwp_project","title":"Project","description":"The Harvard Web Publishing standard Project site.","site_type":"project"},"hwp_personal":{"name":"hwp_personal","title":"Personal","description":"The Harvard Web Publishing standard Personal site.","site_type":"personal"},"hwp_event_conference":{"name":"hwp_event_conference","title":"Event\/Conference","description":"The Harvard Web Publishing standard Event or Conference site.","site_type":"project"}},"default_individual_scholar":"os_scholar","default_project_lab_small_group":"os_project","default_department_school":"os_department_minimal"},"urlIsAjaxTrusted":{"https:\/\/geos-chem.seas.harvard.edu\/search\/site":true},"nice_menus_options":{"delay":800,"speed":"slow"},"ogContext":{"groupType":"node","gid":"1585652"},"password":{"strengthTitle":"Password compliance:"},"type":"setting"});</script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.6/angular.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.6/angular-sanitize.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.6/angular-cookies.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/ngStorage/0.3.9/ngStorage.min.js"></script>
<script src="https://static.projects.iq.harvard.edu/files/js/js_0NmK99JLIjRqsIlFqFNNbx8Ujgexpza5nVIcHEw_ZTg.js?m=1675397495"></script>
<script src="https://static.projects.iq.harvard.edu/files/js/js_Y1FBKf83E3J9MQtFPjbc5aPABrOfDhLHCFnDQJdtDSk.js?m=1675397528"></script>
<script>window.CKEDITOR_BASEPATH = '/profiles/openscholar/libraries/ckeditor/'</script>
<script>var _gaq = _gaq || [];_gaq.push(["_setAccount", "UA-17689007-1"]);_gaq.push(["_gat._anonymizeIp"]);_gaq.push(["_trackPageview"]);_gaq.push(['_setCustomVar',1,'Site homepage','https://geos-chem.seas.harvard.edu/',3]);(function() {var ga = document.createElement("script");ga.type = "text/javascript";ga.async = true;ga.src = ("https:" == document.location.protocol ? "https://ssl" : "http://www") + ".google-analytics.com/ga.js";var s = document.getElementsByTagName("script")[0];s.parentNode.insertBefore(ga, s);})();var addthis_config = {data_ga_social: true, data_ga_property: {"addthis_default":false}};</script>
<script src="https://static.projects.iq.harvard.edu/files/js/js_LiusrpwJT3Sg0H0ZmGojUVryUYFnHLCv1UjzLbWcgsw.js?m=1675397537"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-MML-AM_CHTML"></script>
<script src="https://static.projects.iq.harvard.edu/files/js/js_Gn6CPUOXDTurT1_dttEf_0ILEDturfDpbAqZFd3d6g4.js?m=1675397512"></script>
<script>(function ($) { angular.module('openscholar', ['SiteCreationForm']); })();</script>
<script src="https://static.projects.iq.harvard.edu/files/js/js_TF0j_xSQPq-6QP1Il7NFw8ppuW60PTAxM0BwHtQXBsA.js?m=1675397525"></script>
<script src="https://static.projects.iq.harvard.edu/files/js/js_qluyoBMkmyevXrrhnKB_2ie6cLJ7DL5g_0nHm6hyXwA.js?m=1675397503"></script>
</body>
</html>