ENRREnglish Nature Research Reports (UK)
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Figure 11a shows the composite mean analysis increment for 0000 UTC analyses calculated over all G-IV nonflight days of 200-hPa meridional winds [v.sub.200] during the ENRR field campaign (21 January-31 March).
They have motivated more comprehensive experiments to examine the impacts of the ENRR field campaign data on GFS analyses, with possible implications for future observing systems.
Impact of ENRR observations on NASA GEOS model forecasts during the field campaign.
ENRR field campaign observations were assimilated in real time into GEOS GDAS.
12a shows the combined impact of dropsonde observations deployed between 20[degrees]N and 20[degrees]S for each case in which these data were assimilated during the ENRR field campaign period.
The ENRR dropsonde deployments over the eastern North Pacific are prominent in Fig.
At the same time, more coherent patterns of nonbeneficial impact, such as that seen for dropsondes (not associated with ENRR) over the northwestern Gulf of Mexico in Fig.
As part of the ENRR, NOAA developed a field campaign to obtain intensive atmospheric observations from the tropical Pacific to the U.S.
While many results from the ENRR remain to be determined, it is clear now that a rapid response field campaign to El Nino is feasible and can provide valuable contributions to advancing both science and services.
Descriptions of their experiences and impressions from Kiritimati are available on the CIRES ENRR blog (http://ciresblogs.colorado.edu/el-nino -rapid-response/).
A fundamental observing strategy of ENRR was to examine the dynamical linkages between the tropics and extratropics initiated by large-scale tropical convection associated with El Nino.
We thank the OMAO Aircraft Operations Center, especially Project Manager Jack Parrish and the NOAA G-IV pilots and crew, for their dedication and support throughout the campaign, which included the first crossing by this aircraft into the Southern Hemisphere, as well as the National Data Buoy Center and OMAO Marine Operations Center, including Operations Officer Adrienne Hopper and the entire RHB crew for graciously hosting and supporting ENRR. participants on the TAO buoy survey.