| About |
| Home |
| RO method |
| News Archive |
| Contact |
| Search |
| Documentation |
| Product Documents |
| Publications |
| ROM SAF Reports |
| Visiting Scientist |
| User Workshops |
| Data & Software |
| Product Archive |
| Product Quality |
| NRT Monitoring |
| Climate Monitoring |
| Software |
| User Service |
| Helpdesk |
| Helpdesk History |
| UNS Notifications |
| RSS Feeds |
| Registration |
| Login |
NRT Notification Detail
| Release of the ROM SAF reanalyses |
| DATE: 2019-09-13 11:49 TYPE: DATA |
| Description |
| Dear ROM SAF Data User Issued: 2019-09-13 11:46 UTC The ROM SAF is pleased to announce the release of two ROM SAF reanalyses based on "anchor measurements". These cover the period 20070101-20151231, and they were originally recommended by IROWG climate sub-group in 2013. The reanalyses are performed with the ERA5 system, but run at lower resolution (T159 ~ 125 km), and using a climatological background error covariance matrix. They provide global daily and monthly-mean gridded data, and departure statistics for the assimilated data. The first reanalysis assimilates just reprocessed GNSS-RO data produced by the ROM SAF, and AMSU-A channel 14 to constrain the upper-stratosphere (RO). The second reanalysis also assimilates conventional data which is not bias corrected within the variational bias correction scheme (RO+CONV). The download information and links retrieval script examples can be found here: https://confluence.ecmwf.int/display/ROMSAF/The+EUMETSAT+ROM+SAF+reanalyses A summary of science results will be presented at the EUMETSAT ROM SAF - IROWG 2019 workshop (http://www.romsaf.org/romsaf-irowg-2019/en/abstract/107) and this will elaborated further in a forthcoming ROM SAF Report. However, one interesting result currently under investigation is that the reanalysis assimilating just GNSS-RO and AMSU-A channel 14 produces a realistic QBO for the zonal winds in the tropical stratosphere. For example, below we show the time-series of monthly mean zonal winds at 30 hPa in the Singapore region, for the two ROM SAF reanalyses, the full ERA5 system, and Free University Berlin (FUB) wind measurements. Kind regards The ROM SAF Team |
Newer Older
|
|
|
|
|
|
|
The ROM SAF products are licensed under the Creative Commons Attribution 4.0 International License (CC BY 4.0) by EUMETSAT. Whether you're displaying the product as-is or if you have used it as input data, please use the attribution suggested on ROM SAF usage policy and acknowledgement.
|
|||||