View from the ocean of sunny Honolulu skyline, with rainclouds approaching


Remote Sensing of the Water Cycle: Sensors to Science to Society
13-16 February 2024 | Honolulu, HI

About the Meeting

In the past decade, there have been unprecedented changes in the fields of sensor technology, satellite missions, modeling and applications to benefit society. Small satellite systems are shifting observational paradigms to more rapid revisits, higher resolutions and ever-increasing volumes of data. The commercial sector has launched hundreds of satellites and companies are now in the business of understanding the water cycle. Massive amounts of data are available and can be ingested into data assimilation models to better understand the influence any particular part of the water cycle. Machine Learning and Artificial Intelligence has broadened our capability to exploit multiple types of Earth observation data within complex modeling systems. With the exponential growth of cell phones, there are potentially billions of people everywhere who can use their smartphones to access water information.

Update on Housing:

The nights surrounding the dates 12th and the 16th specifically have limited room availability. If you try to reserve online with dates outside the 13-15 February nights, you may receive a message that the block is sold out. We encourage you to call the hotel directly to ask about adding additional nights to your stay. The rooms in the Remote Sensing block are guaranteed lowest rates and we encourage you to use this block and add on rooms as needed.

Scientific Program

The scientific program is live.


Meeting Goals

This Chapman aims to explore a number of interesting questions - What is the role of scientists in this mix? Which science questions have been answered in this past decade and what are the next decade’s pressing questions? These are in the areas of water and food security, health, new sensors and resolving conflicts between countries. How do we further connect the business of water with the researchers of water? Our Chapman conference aims to bring together these groups to build further collaborations and foster new ideas that will meaningfully contribute to society in the decades to come.

This Chapman Conference will be held in-person at the Sheraton Princess Kaiulani in Honolulu, HI.

Pre-Conference Workshops

Workshop registration is closed.

Tuesday, 13 February 2024
9:00am – 12:30pm

Title: Data Access Workshop for NASA’s SWOT Satellite

Workshop Hosts: Cassandra Nickles, Catalina Taglialatela, NASA JPL

Capacity: There is a limit of 30 registrations for this workshop. You can add your name to the waitlist during the registration process.

Fee: Professional: $70.00 USD | Student/Low Income Country/Lower-Middle Income Country: $40.00 USD

The Surface Water and Ocean Topography (SWOT) satellite, a joint NASA-CNES venture, provides unprecedented measurements of surface water extents and elevations for hydrologic science and applications. The observations are offered through a range of data products including river and lake vector data in shapefiles, and raster, pixel cloud, and pixel vector data in netCDF. The shapefile products will also contain estimates of river discharge and lake storage change. In this pre-meeting workshop, participants will be introduced to SWOT and the various ways to access and utilize its data products, including via cloud computing, local download, and data transformation tools. Participants will be able to utilize a provided cloud computing environment accessed via personal laptops, or their own laptop’s compute power to explore SWOT data using data recipes by PO.DAAC, NASA’s Physical Oceanography Data Active Archive Center. No prior cloud computing experience is necessary. We welcome all to come and see how SWOT data could augment existing workflows or initiate new, innovative science and applications! The data tutorials at the workshop will use Python, but no prior experience is needed.

Tuesday, 13 February 2024
1:30pm – 4:30pm

Title: CyGNSS Workshop

Workshop Hosts: Hugo Carreno Luengo, University of Michigan

Fee: Professional: $70.00 USD | Student/Low Income Country/Lower-Middle Income Country: $40.00 USD

The CYGNSS Workshop at the AGU Chapman Conference is a dynamic forum for scientists looking forward to new remote sensing tools to further advance on the understanding of the water cycle. Monitoring highly dynamic surface water extent requires high spatio-temporal sampling observations with high spatial resolution. The NASA CYGNSS SmallSats constellation can generate such measurements independently of weather conditions. CYGNSS can detect and image small water bodies under heavy vegetation i.e. 400 ton/ha. This CYGNSS improvement as compared to water masks derived from optical imagers allows for monitoring of the temporal fluctuations of surface water even in densely vegetated areas. This workshop includes a tutorial on CYGNSS, describing the foundational theoretical elements and methods, as well as a dedicated section for applications relevant to the water cycle. Finally, attendees will have the opportunity to interact with some CYGNSS science team members during the workshop.

Format Overview

The meeting will kick off Tuesday with an opening reception and plenary. Wednesday, Thursday, and Friday will feature traditional conference style talks, discussion and posters. The five sessions will start with invited talks and panel discussions. Posters sessions will be held Wednesday and Thursday afternoon. Session topics will include:

  • Session 1: Remote Sensing of the Water Cycle and new sensors
  • Session 2: Food Security and health
  • Session 3: Water Security and Transboundary Issues
  • Session 4: The Business of Water
  • Session 5: Petabytes of Data

Abstract Submission Policies

  • The deadline to submit an abstract has been extended to 4 October 2023. You are not required to be an AGU member to submit an abstract. There is no fee for submissions.
  • You cannot request oral presentations. All approved abstracts will be assigned as a poster presentation.
  • Your submission also grants AGU permission to publish the abstract.

Presenter Guidelines

Please prepare a PowerPoint with your content. Slides must be submitted ahead of the meeting. An AGU representative will contact you with a link to a Dropbox. Presentations should be formatted to 16:9 if possible. The podium laptop will be a PC. Please consider the following recommendations:

  • Be considerate of other speakers and the audience by staying within your allotted time. The individual presentation time includes three minutes for discussion and changeover to the next speaker. Session chairs will hold you to the allotted time, which is essential to ensure adequate time for questions and discussion.
  • Please discuss the material as reported in your submitted and approved abstract.
  • Prepare your presentation in advance so that your ideas are logically organized and your points are clear.
  • Take time to rehearse your presentation. If your presentation runs longer than the allotted time, eliminate the least essential material and rehearse again.
  • Give an opening statement to acquaint the audience with the nature and purpose of the study. Speak slowly and clearly. Word choice should be simple: use active words and short sentences.
  • Use the microphone and speak toward the audience. It is difficult for the audience to hear if you turn your head away, so please have copies of your presentation at the podium.

Each presenter will have a landscape poster space of 180cm W x 120cm H (6 feet W by 4 feet H). Presenters with two abstracts will be provided one poster board. Posters will be displayed for the day of their designated poster session and should be removed at the end of the day or it will be recycled. 

The presentation must cover the material as cited in the abstract.

  • Place the title of your paper and your paper number prominently at the top of the poster board to allow viewers to identify your paper. Indicate 1) the abstract's presentation number, 2) title, and 3) authors' names.
  • Highlight the authors' names, e-mails, and address information in case the viewer is interested in contacting you for more information.
  • Prepare all diagrams or charts neatly and legibly beforehand in a size sufficient to be read at a distance of 2 meters. Paragraph and figure caption text should be AT LEAST 24-point font (0.9 cm height) and headers AT LEAST 36 point font (1.2 cm height). Use creativity by using different font sizes and styles, perhaps even color.
  • Use different colors and textures/symbols for each line or bar contained in your graph or chart. A serif font (e.g., Times) is often easier for reading main text, and a non-serif font (e.g., Arial or Helvetica) for headers and figure labels.
  • Organize the paper on the poster board so it is clear, orderly, and self-explanatory. You have complete freedom in displaying your information in figures, tables, text, photographs, etc.
  • Use squares, rectangles, circles, etc., to group similar ideas. Avoid cluttering your poster with too much text. Label different elements as I, II, III; or 1, 2, 3; or A, B, C, making it easier for a viewer to follow your display.
  • Include the background of your research followed by results and conclusions. A successful poster presentation depends on how well you convey information to an interested audience.

Poster print requests can be sent to the Xerox Business Center at the Sheraton Waikiki. Email [email protected] to submit a print request. Estimated cost for a 5x3 ft poster is $229.73+tax. The final day to submit a print request is 9 February.

Xerox Business Center at the Sheraton Waikiki: 2255 Kalakaua Ave, 2nd Floor, Honolulu, HI 96815


The registration deadline is 13 January 2024. The registration deadline has been extended to 21 January.

Registration is closed.

Registration fees will include:

  • access to all scientific sessions on Wednesday, Thursday, and Friday
  • refreshment breaks
  • welcome reception with appetizers and cash bar on Tuesday, networking reception with appetizers and cash bar on Wednesday, and conference dinner with cash bar on Thursday

Pre-conference optional workshops on Tuesday require a separate fee during the registration process.

  • Professional: $725.00 USD
  • Student/Low Income Country/Lower-Middle Income Country: $400.00 USD
Workshop Fees
  • Professional: $70.00 USD
  • Student/Low Income Country/Lower-Middle Income Country: $40.00 USD
Cancellation Policy

Written notification of registration cancellations must be emailed to [email protected]. Registration cancellations received by 15 January 2024 will receive a complete refund.

Registration cancellations received between 17 and 24 January 2024 will have a $50 processing fee deducted from their refund. No refunds will be issued for registrations or ticketed events canceled after 24 January 2024.


The Remote Sensing of the Water Cycle at the Sheraton Princess has many rooms available the nights of the conference: 13-15 February. The nights surrounding these dates (the 12th and the 16th specifically) have more limited room availability. If you try to reserve online with dates outside the 13-15 February nights, you may receive a message that the block is sold out. We encourage you to call the hotel directly to ask about adding additional nights to your stay. The rooms in the Remote Sensing block are guaranteed lowest rates and we encourage you to use this block and add on rooms as needed.

Sheraton Princess Kaiulani

Address: 120 Kaʻiulani Ave, Honolulu, HI 96815

Phone: (808) 921-4631


Single/Double: $195/night plus taxes and fees
Triple: $275/night plus taxes and fees
Quad: $355/night plus taxes and fees

Per Diem Rooms: There are a limited number of per diem rooms. Please call 1-808-921-4631 to reserve your room.
Fees include a $33/night resort fee.

Book your stay online or call 1-808-921-4631. The group reservations team is available from Monday-Friday 8:00am-4:00pm HST (closed on weekends on holidays).

The deadline to book a room in the block is Friday, January 12, 2024. We encourage you to call the hotel directly to check on availability after the cutoff date.

If cancellation is made within 72 hours of arrival, a 1-night deposit will be retained as a cancellation.

Early Departure Fee

An Early Departure Fee (equal to 50% of the room rate) may only be charged if an attendee checks out of the Hotel prior to the attendee’s scheduled departure date, without having notified the Hotel by 12:00 midnight the day after check-in of the change in scheduled departure.

No Show Charge

A No-Show charge of one (1) night’s room and tax will be charged to any individual who fails to show for their confirmed reservation.


The Daniel K. Inouye International Airport (HNL) is 11.2 miles from the Sheraton Princess Kaiulani. To reserve a shuttle to and from the airport, visit the Hawaii Island Transport Services (HITS) website. Fees apply and reservations are required.

The Sheraton Princess Kaiulani is located one block from Waikiki Beach.

Visit the official Go Hawaii website.

Remote Sensing of the Water Cycle Chapman Travel Grants

The application period is closed. Applicants received notifications on 6 January.

Aerial view of downtown Honolulu skyline, beach and blue waters, with a golf course, amphitheater and residential neighborhood in the foreground and rain clouds in the distance.

Chapman Conveners

Venkataraman Lakshmi, University of Virginia

Raphael Tshimanga, Congo Basin Water Resources Research Center

Dalia Kirschbaum, NASA Goddard Space Flight Center

Douglas Alsdorf, Ohio State University

Delwyn Moller, University of Auckland

Meeting Timeline



Abstract Submissions and Travel Grant Applications Open



Abstract Submissions and Travel Grant Applications Deadline



Abstract Notification Letters and Travel Grant Letters Sent


Program Available


Registration Opens



Withdrawal Deadline


Housing Deadline


Registration Deadline



Chapman Conference Start Date


Chapman Conference End Date