brooks range, ak
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DESCRIPTIONHIAPER Pole-to-Pole Observations 2009 (“HIPPO”) Steven C. Wofsy. Global CH 4. Keynote Address, ICDC8, Jena, 18 Sep 2009. Brooks Range, AK. Summary of Deliverables for HIPPO -- HIPPO Proposal March 2006 - PowerPoint PPT Presentation
Brooks Range, AKHIAPER Pole-to-Pole Observations 2009 (HIPPO)Steven C. Wofsy Global CH4Keynote Address, ICDC8, Jena, 18 Sep 2009
Summary of Deliverables for HIPPO -- HIPPO Proposal March 2006(continued)
ENDURING VALUE OF HIPPO DATA.
For decades, GEOSECS data (only recently superceded by WOCE) have been the foundation for critical tests of ocean models, and the means to derive synthetic insight into ocean processes as diverse as mixed-layer ventilation, deep-sea conveyor belts, new production by the biota, and, just 0628575in 2004, planetary heat balance. GEOSECS showed that a tracer study with the right global architecture could truly revolutionize a field. We expect the same will be true of HIPPO.
HIPPO main pointswhat has been delivered:unprecedented sampling of the remote atmosphere
Operations and sensors successful; New Measurements implemented; HAIS sensors !Seasonal SamplingReference data setFine-grained vision at global scale
New Science: BulletsN2O distributions differ radically from global model simulationsSouthern Ocean sources and sinks of CO2 observed directlyEmission of marine-derived gases observed directly as atmospheric enhancements: N2O, methyl halides and methyl nitrate, OCS, CS2, and DMSArctic and North Pacific structuresSeasonal changes cold dome, transpacific transport, latitude gradientsUpside down distributions of global pollutants seen consistentlyStratospheric influence measured directly at global scale over the oceanBlack Carbon global distributions differ from any models (lower) but intense events are very strongH2O supersaturation regions shown to derive from moistening
Modeldata and validation bullets Comparisons are underway with strong participation by 5+ models, plus satellite teams (AIRS, TES) plus TCCON
HIPPO Aircraft Instrumentationcolors denote replicated measurements
Figure 1. (Panels a, b) Locations of flight tracks and vertical profiles (colored points) for HIPPO deployments 1 and 2. (Panel c) Vertical profiles (~200 in each mission), with the tropopause shown in orange and stratospheric flight segments in blue. (Panel d) Cross section of potential temperature in HIPPO_1, on the southbound leg near the dateline. The white dotted lines mark the flight path of the GV and grey lines show contours of potential temperature.
Figure 2. Cross sections of CH4 (ppb), CO (ppb), CO2 (ppm), SF6 (ppt), N2O (ppb) and H2O (log10 (ppm)) on HIPPO_1, southbound along the dateline, January, 2009. White dashed lines show flight tracks, and grey contours show potential temperature. CO2composite and COcomposite represent merged data from CO2QCLS and OMS and from COQCLS and RAF, respectively.
HIPPO _1 HIPPO _2 HIPPO_3 Jan 2009 Nov 2009 April 2010O2CO2
HIPPO _1 HIPPO _2 HIPPO_3 Jan 2009 Nov 2009 April 2010CH4Southbound Northbound
HIPPO _1 HIPPO _2 HIPPO_3 Jan 2009 Nov 2009 April 2010NorthboundSouthbound CO
HIPPO _1 HIPPO _2 HIPPO_3 Jan 2009 Nov 2009 Apr 2010Central Pacific HIPPO_1 Eastern Pacific model obsN2O
Tropospheric ozone in HIPPO 1, 2 and 3 N/SO3
Figure 3. (Panels a, b) Cross sections of CO2 (ppm) and CO (ppb), on HIPPO_2, southbound along the dateline, November, 2009. (Panels c, d) Vertical profiles of greenhouse gases and black carbon at 77.2 N, November, 2009. (Panel e) Same as c, expanded. (Panel f ) Photo of dense layer of dark aerosols at 80N, 6-8 km, November, 2009 (Photo: E. Kort).(a)(b)N2OCOCH4
Dibromomethane MODEL DISTRIBUTION:DibromomethaneKerkweg et al. (2008)MEASUREMENTS:HIPPO -1 (NWAS + AWAS)
HIPPO Global Campaign # 3water vapor distribution, March, 2010
M. Zondlo and M. DiaoSPCZITCZCan we generalize this zonally and in time? Look at AIRS...
**colors denote replicated measurementsN-S gradient; vertical structure especially in Arctic/boreal/midlat; tropical inversion H2 but not 3;*Excess N2o is observed consistently in the middle and upper troposphere in the tropics and subtropics. The enhanced concentrations trace back to SE Asia and/or India. Models do not simulate this pattern. Emissions from coastal upwelling are evident in the Eastern Pacific**HIPPO_3 in April shows a very similar pattern of strong stratospheric influence over the Pacific as observed in START-08 over N America; Less influence, but still significant, were found in the other HIPPOs *