dS/dH - The rate of change in local sea level at the chosen city due to ice thickness change at this point.
dS/dH * ΔH - The change in local sea level at the chosen city due to ice thickness change at this point.
Please Tell Us About Yourself
To start the demo, click "Let's go" at any time. What our team from NASA/JPL at CalTech shows here are results from work published in Science Advances, "Should coastal planners have concern over where the land ice is melting?". Once you click "Let's go", choose your city. The results will show for the entire world, the contribution of icy areas to sea-level in your city. The colorbar means the following: red, strong contribution to sea-level rise in your city, blue: exact opposite, contribution to sea-level DECREASE, green: no contribution. Also displayed in the lower right are specific trends for your city (sea-level from ice, from specific basins, and total). If you want to know more, click "More Info".
Datasets Used for the Simulation
- Coastline from Wessel, P., and W. H. F. Smith, A Global Self-consistent, Hierarchical, High-resolution Shoreline Database, J. Geophys. Res., 101, #B4, pp. 8741-8743, 1996.
- Ice forcing from 2003 to present-day from JPL RL05M GRACE mascon solution, provided by the Jet Propulsion Laboratory (GRACE-JPL) (Watkins et al., 2015).
- Anisotropic mesh refined to best capture the coastlines. Initial resolution, 400 km, anisotropically refined to 100 km for coastlines of both Greenland and Antarctica.
- Coastline mapping using GMT - The Generic Mapping Tools, Version 5.1.1 (r12968) [64-bit] (c) 1991-2014 Paul Wessel, Walter H. F. Smith, R. Scharroo, J. Luis, and F. Wobbe.
- Ocean vs Ice vs Continent mask determined using GMT and GSHHG.
- Spherical geometry, radius = 6371.012 km.
- Sea-level rise solution following Farrel and Clarke, 1976, according to algorithms described in Adhikari et al., GMD 2016.
How to Run the Simulation
In the Controls section, choose your local coastal city where the results are to be rendered as well as which result is to be displayed: 1) Local Sea Level Contribution from glaciers/ice sheets (the default), 2) the Gradient Fingerprint and 3) the Ice Thickness Change from GRACE to be displayed. The results will then be rendered automatically. For further experiments, you can chose to extrapolate GRACE ice thickness changes into the future (Time Series). You can also compute the contribution of a specific basin to Local Sea Level in your city. To download the gradient fingerprint map, click on the "Download" button.
If you have any questions or feedback, please send us an email.