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  • Deep learning for satellite precipitation estimation · Deep learning for geoscience 2 Deep learning and process understanding for data-driven Earth system science. Nature, 2019
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Page 1: Deep learning for satellite precipitation estimation · Deep learning for geoscience 2 Deep learning and process understanding for data-driven Earth system science. Nature, 2019

IMPLEMENTED BY

Deep learning for

satellite precipitation

estimation

• A. Moraux, S. Dewitte, B. Cornelis & A. Munteanu

• Royal Meteorological Institute of Belgium & Vrije Universiteit Brussel

Page 2: Deep learning for satellite precipitation estimation · Deep learning for geoscience 2 Deep learning and process understanding for data-driven Earth system science. Nature, 2019

IMPLEMENTED BY

Deep learning for geoscience

2

Deep learning and process

understanding for data-driven Earth

system science. Nature, 2019

M. Reichstein et al.

Page 3: Deep learning for satellite precipitation estimation · Deep learning for geoscience 2 Deep learning and process understanding for data-driven Earth system science. Nature, 2019

IMPLEMENTED BY

Deep learning for climatology

3

Deep learning for multi-year ENSO forecasts. Nature, 2019

Y. G Ham, J. H. Kim, & J. J. Luo

Page 4: Deep learning for satellite precipitation estimation · Deep learning for geoscience 2 Deep learning and process understanding for data-driven Earth system science. Nature, 2019

IMPLEMENTED BY

Importance of precipitation estimation

4

Daily precipitation accumulationInstantaneous precipitation rate

Courtesy of M. Journée RMI belgian radars composite

Precipitation Nowcasting

Page 5: Deep learning for satellite precipitation estimation · Deep learning for geoscience 2 Deep learning and process understanding for data-driven Earth system science. Nature, 2019

IMPLEMENTED BY

Different observation tools:

5

3) Satellite radiometers

1) Rain gauges

2) Weather radar

Page 6: Deep learning for satellite precipitation estimation · Deep learning for geoscience 2 Deep learning and process understanding for data-driven Earth system science. Nature, 2019

IMPLEMENTED BY

Rain gauges

6

Page 7: Deep learning for satellite precipitation estimation · Deep learning for geoscience 2 Deep learning and process understanding for data-driven Earth system science. Nature, 2019

IMPLEMENTED BY

Radar

7

Estimate precipitation from

electromagnetic pulse reflection

measurementsZ=aR𝑏

Z =

Reflectivity

R =

Precipitation rate

a, b =

empirical

coefficients

Courtesy of L. Delobbe

Page 8: Deep learning for satellite precipitation estimation · Deep learning for geoscience 2 Deep learning and process understanding for data-driven Earth system science. Nature, 2019

IMPLEMENTED BY

Satellite radiometer

8

Meteosat Second

Generation

Full disc imagery in 12

spectral channels

Visible and infrared

3 km spatial resolution

15 minutes temporal

resolution

Page 9: Deep learning for satellite precipitation estimation · Deep learning for geoscience 2 Deep learning and process understanding for data-driven Earth system science. Nature, 2019

IMPLEMENTED BY

Satellite radiometer

9

Cloud physical properties

Red: Optical depth

Green: Water phase

(water/ice) and particle

size

Blue: Temperature

Page 10: Deep learning for satellite precipitation estimation · Deep learning for geoscience 2 Deep learning and process understanding for data-driven Earth system science. Nature, 2019

IMPLEMENTED BY

Multimodal and multiscale deep learning model for precipitation estimation

10

Page 11: Deep learning for satellite precipitation estimation · Deep learning for geoscience 2 Deep learning and process understanding for data-driven Earth system science. Nature, 2019

IMPLEMENTED BY

11

Page 12: Deep learning for satellite precipitation estimation · Deep learning for geoscience 2 Deep learning and process understanding for data-driven Earth system science. Nature, 2019

IMPLEMENTED BY

Model training

12

Rain gauges measurements

Satellite channels

Page 13: Deep learning for satellite precipitation estimation · Deep learning for geoscience 2 Deep learning and process understanding for data-driven Earth system science. Nature, 2019

IMPLEMENTED BY

Data splitting

13

Proper data splitting both in time and space is necessary for correct performance evaluation

➔Not randomly !

Page 14: Deep learning for satellite precipitation estimation · Deep learning for geoscience 2 Deep learning and process understanding for data-driven Earth system science. Nature, 2019

IMPLEMENTED BY

Study case: winter rain

14

Our DL model

Traditional

methods

Page 15: Deep learning for satellite precipitation estimation · Deep learning for geoscience 2 Deep learning and process understanding for data-driven Earth system science. Nature, 2019

IMPLEMENTED BY

Study case: summer rain

15

Our DL model

Traditional

methods

Page 16: Deep learning for satellite precipitation estimation · Deep learning for geoscience 2 Deep learning and process understanding for data-driven Earth system science. Nature, 2019

IMPLEMENTED BY

Future studies

16

Use radar, combined with satellite and rain gauges

➢ Further improve precipitation estimation and resolution

Develop a model with only satellite data as input

➢ Global coverage precipitation product

Page 17: Deep learning for satellite precipitation estimation · Deep learning for geoscience 2 Deep learning and process understanding for data-driven Earth system science. Nature, 2019

IMPLEMENTED BY

Future Eumetnet workshop on Artificial Intelligence for weather and climate

17

⚫ When: 26-27 February 2020

⚫ Where: Brussels

⚫ Inscription: https://events.spacepole.be/e/AI

⚫ For more information: [email protected]

https://events.spacepole.be/e/AI
Page 18: Deep learning for satellite precipitation estimation · Deep learning for geoscience 2 Deep learning and process understanding for data-driven Earth system science. Nature, 2019

IMPLEMENTED BY

Appendix: Performance scores

18

1) Precipitation detection

2) Precipitation rate

estimation


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