The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners.
As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.
i
A Doppler radar study of convective draft lengths over Darwin, Australia
-
2021
-
-
Source: Monthly Weather Review (2021)
[PDF-922.49 KB]
Details:
-
Journal Title:Monthly Weather Review
-
Personal Author:
-
NOAA Program & Office:
-
Description:Data from an upward-pointing wind profiler radar pair at Darwin in tropical Australia are used to determine the characteristics of individual convective up- and downdrafts observed at the site. Drafts are identified as vertically contiguous regions of instantaneous upward or downward motion exceeding 0.2 ms−1. Most updrafts and downdrafts found are less than 2 km in vertical extent, and updrafts exceeding 5 km vertical length carry no more than 33% of the total upward mass flux. Updraft length correlates positively with rain rates, and on very high rain rates (greater than 20 mm/hr), average updraft lengths are ~5 km. Typical peak updraft velocities increase from ~2.5 ms−1 for the smallest to ~ 4 ms−1 for the largest drafts, while those for downdrafts remain ~ 2 ms−1 regardless of size. These results are broadly consistent with other numerical modeling studies, but contrast with the common view of deep convection as being dominated by continuous, deep drafts.
-
Keywords:
-
Source:Monthly Weather Review (2021)
-
DOI:
-
ISSN:0027-0644;1520-0493;
-
Format:
-
Publisher:
-
Document Type:
-
Rights Information:Other
-
Compliance:Library
-
Main Document Checksum:
-
Download URL:
-
File Type:
