The development of rainfall retrievals from radar at Darwin

Jackson, Robert; Collis, Scott; Louf, Valentin; Protat, Alain; Wang, Die; Giangrande, Scott; Thompson, Elizabeth J.; Dolan, Brenda; Powell, Scott W.

doi:10.5194/amt-14-53-2021

Advanced Search

Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

Advanced Search
Custom Query

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Clear All

Query Builder

Query box

Clear All

For additional assistance using the Custom Query please check out our Help Page

i

The development of rainfall retrievals from radar at Darwin

2021
By Jackson, Robert ; Collis, Scott ; Louf, Valentin ; ...
Source: Atmos. Meas. Tech., 14, 53–69, 2021

[PDF-2.79 MB]

Details Supporting Files You May Also Like

Details:

Journal Title:

Atmospheric Measurement Techniques
Personal Author:

Jackson, Robert ; Collis, Scott ; Louf, Valentin ; Protat, Alain ; Wang, Die ; ... More +

Jackson, Robert ; Collis, Scott ; Louf, Valentin ; Protat, Alain ; Wang, Die ; Giangrande, Scott ; Thompson, Elizabeth J. ; Dolan, Brenda ; Powell, Scott W. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; PSL (Physical Sciences Laboratory) ; WPO (Weather Program Office) ; CIRES (Cooperative Institute for Research in Environmental Sciences)

OAR (Oceanic and Atmospheric Research) ; PSL (Physical Sciences Laboratory) ; WPO (Weather Program Office) ; CIRES (Cooperative Institute for Research in Environmental Sciences) Less -
Description:

The U.S. Department of Energy Atmospheric Radiation Measurement program Tropical Western Pacific site hosted a C-band polarization (CPOL) radar in Darwin, Australia. It provides 2 decades of tropical rainfall characteristics useful for validating global circulation models. Rainfall retrievals from radar assume characteristics about the droplet size distribution (DSD) that vary significantly. To minimize the uncertainty associated with DSD variability, new radar rainfall techniques use dual polarization and specific attenuation estimates. This study challenges the applicability of several specific attenuation and dual-polarization-based rainfall estimators in tropical settings using a 4-year archive of Darwin disdrometer datasets in conjunction with CPOL observations. This assessment is based on three metrics: statistical uncertainty estimates, principal component analysis (PCA), and comparisons of various retrievals from CPOL data.

The PCA shows that the variability in R can be consistently attributed to reflectivity, but dependence on dual-polarization quantities was wavelength dependent for 110mmh−1. Rainfall estimates during these conditions primarily originate from deep convective clouds with median drop diameters greater than 1.5 mm. An uncertainty analysis and intercomparison with CPOL show that a Colorado State University blended technique for tropical oceans, with modified estimators developed from video disdrometer observations, is most appropriate for use in all cases, such as when 110mmh−1 (deeper convective rain).
Keywords:

[+]

Global Circulation Models Precipitation Radar Rainfall Precipitation Prediction Grand Challenge
Source:

Atmos. Meas. Tech., 14, 53–69, 2021
DOI:

https://doi.org/10.5194/amt-14-53-2021
Document Type:

Journal Article
Rights Information:

CC BY
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:e43d5d0f5d4e7bcf62ffc3dba4fe2cd99c1b0759f459022dd6318bc3981726f4
Download URL:

https://repository.library.noaa.gov/view/noaa/31000/noaa_31000_DS1.pdf
File Type:

	Machine readable version (XML)	xml
	Machine readable version (XML)	xml

More +