The transition for the amsr e rainfall algorithm to amsr2
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The transition for the AMSR-E rainfall algorithm to AMSR2. David I. Duncan Chris Kummerow Oxnard AMSR-E Technical Interface Meeting. Transition:. AMSR-E (L2A) [6/2002 – 10/2011] Non-raining variables (RSS) Precipitation (CSU/NOAA). AMSR2 [7/2012 - ] ? ?. Consistent time series?.

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The transition for the AMSR-E rainfall algorithm to AMSR2

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The transition for the amsr e rainfall algorithm to amsr2

The transition for the AMSR-E rainfall algorithm to AMSR2

David I. Duncan

Chris Kummerow

Oxnard AMSR-E Technical Interface Meeting


The transition for the amsr e rainfall algorithm to amsr2

Transition:

  • AMSR-E (L2A)

  • [6/2002 – 10/2011]

  • Non-raining

  • variables (RSS)

  • Precipitation

  • (CSU/NOAA)

  • AMSR2

  • [7/2012 - ]

  • ?

  • ?

Consistent time series?


The transition for the amsr e rainfall algorithm to amsr2

The challenge:

AMSR-E (L2A)

RSS Tbs

RSS and CSU

  • Consistency of precipitation and other geophysical data products

  • How to determine consistency with no temporal overlap?

  • Calibration is key, but using what method?

AMSR-E (L1B)

JAXA Tbs

CSU

AMSR2 (L1B)

JAXA Tbs

CSU


The transition for the amsr e rainfall algorithm to amsr2

A reminder: GPROF 2010 V2 recently implemented for AMSR-E

Zonal means shown for Jan, Apr, Jul, Oct 2007


The transition for the amsr e rainfall algorithm to amsr2

Using unchanged L1B Tbs from AMSR-E, comparing with L2A


The transition for the amsr e rainfall algorithm to amsr2

An example of the future level 3 monthly gridded (0.25 deg) precipitation product from GPROF 2010v2


The transition for the amsr e rainfall algorithm to amsr2

AMSR2 Precipitation

TOP:JAXA Calibration

to AME L1B

Mean = 3.12 mm/day

BOTTOM: No Calibration applied

Mean = 3.81 mm/day

(+22.1%)


The transition for the amsr e rainfall algorithm to amsr2

AMSR2 Water Vapor

TOP: JAXA Calibration

to AME L1B

Mean=36.6mm

BOTTOM: No Calibration applied

Mean=38.9mm

(+6.3%)


The transition for the amsr e rainfall algorithm to amsr2

AMSR2 Wind Speed

TOP: JAXA Calibration

to AME L1B

Mean=9.30 m/s

BOTTOM: No Calibration applied

Mean=7.84 m/s

(-15.7%)


The transition for the amsr e rainfall algorithm to amsr2

Using CSU Intercal method. Contact Wes Berg ([email protected]) for further details


The transition for the amsr e rainfall algorithm to amsr2

For the months studied:

+6.5% AME L1B

vs. CSU intercal

+7.4% AME L1B

vs. TMI

+7.1%AM2 JAXA intercal vs. CSU intercal

+9.8% AM2 JAXA intercal

vs. TMI


The transition for the amsr e rainfall algorithm to amsr2

Thank you!


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