U.S. Government Entry Requirement for Visa Waiver Program (VWP) Countries
Effective 20 January 2011, citizens of Visa Waiver countries will be unable to enter the United States without Electronic System for Travel Authorization (ESTA) approval from the U.S. Government. VWP travelers who have not obtained approval through ESTA will be denied boarding on any air carrier destined for the United States. For more information, visit the VWP program website.

It is strongly recommended that international participants apply for visas at least 3 months prior to the Fall Meeting. Note: some consulates may have delays in scheduling visa interviews; therefore, applicants should first contact the consulate to determine the wait time for an interview. Additional information on business visas can be found at the DOS Business Visa Center website, and at the IVO website.

Also, if you are experiencing significant visa delays, please complete the visa survey, and a representative will provide feedback.

The U.S. Department of State maintains a comprehensive website containing information about traveling to the United States.

The National Academies Web site has additional information about visa-related issues and travel information for U.S. citizens and non-U.S. citizens.

Letters of Invitation

If you did not submit an abstract and are in need of a letter of invitation, submit a request via this surveyIf you did submit an abstract to the Fall Meeting, do not submit a request to the link above and see below for further instructions. 

Please note, if you submitted an abstract, a letter of invitation will be automatically generated for you via the abstract submission tool in early October; do not submit a request via the above survey. If you are the presenting author on a submitted abstract for the 2014 Fall Meeting, please await your notification letter for a link to access this letter. If you have already generated a letter but you are in need of a signature on this letter, please know that a signature will be available on the letter in early October.

Otherwise, letters may be requested until 1 December 2014 via the survey and your request will be reviewed. 

United Airlines Discounts

Make your airline reservations early to secure your preferred flights! AGU has again teamed up with United Airlines to provide you with discounts to San Francisco. Note: discounts are valid for the following travel dates: 11 December through 22 December 2014.

Customers residing in Canada: Reserve online or call United at 1-800-426-1122, and reference the Z Code ZTM8 and the Agreement Code 652159 to obtain your discount!

Customers residing outside of the USA and Canada: Reserve online or email United Airlines, and reference the Z Code ZTM8 and the Agreement Code 652159 to obtain your discount! Please allow 24 hours for e-mail requests to be processed.

The Moscone Center

Fall Meeting events will take place throughout the Moscone Center‘s South and West buildings.  The Moscone Center is located at the edge of the city’s dynamic South of Market district and just four blocks from Union Square, the city’s vibrant shopping district, and the Powell Street cable car to Nob Hill, Chinatown, and Fisherman’s Wharf.


Plan Your Stay

Famous for scenic beauty, cultural attractions, diverse communities and world-class cuisine, San Francisco’s landmarks include the Golden Gate Bridge, cable cars, Fisherman’s Wharf, Alcatraz, Chinatown, Union Square, North Beach, the Castro district and Mission Dolores. The much-celebrated fog creates a romantic mood in this most European of American cities.

Don’t Forget Your Walking Shoes

Pack your walking shoes and don’t forget your umbrella as you plan to enjoy the sights in San Francisco. Take advantage of the diverse transportation options including world-famous cable cars, light rail, buses, and ferries.  Find out why Prevention magazine named San Francisco the #1 Best Walking City in America.

Details on all of the city’s transportation options can also be found in one place at  The integrated website allows users to plan trips, create itineraries, and find up-to-the-minute transportation information from anywhere in the Bay Area.


San Francisco is fortunate to have a temperate marine climate and enjoys mild weather year-round.  Average temperatures in December range from a maximum of 57°F/19°C to 47°F/9°C.  The average rainfall is 3.5”/9 cm.  San Francisco weather can change by the hour, so attendees are advised to pack layers and be sure to have a light jacket or coat and umbrella.