Part III-Monitoring Aerosol, Clouds and Water-1€¦ · 1960 1965 1970 1975 1980 1985 1990 1995...
Transcript of Part III-Monitoring Aerosol, Clouds and Water-1€¦ · 1960 1965 1970 1975 1980 1985 1990 1995...
Monitoring Aerosol, Clouds and Monitoring Aerosol, Clouds and Water in the Polar AtmosphereWater in the Polar Atmosphere
part IIIpart III
JeanJean--Pierre BlanchetPierre Blanchet
ESCER ESCER -- UQAMUQAMCenter for StudyCenter for Study and Simulation of Regional Climate and Simulation of Regional Climate
Canadian Regional ClimateCanadian Regional ClimateModeling and Diagnostics NetworkModeling and Diagnostics Network
Summer SchoolSummer SchoolNSERC CREATE Training Program in NSERC CREATE Training Program in
Arctic Atmospheric ScienceArctic Atmospheric Science
AllistonAlliston, ON, July 23, ON, July 23--27, 201227, 2012
Atmospherictemperatureand water
Cloud Cloud –– Radiation FeedbackRadiation FeedbackWinter (IR dominated)Winter (IR dominated)
SurfaceTemperature
Cloud optical depth Aerosols
Surface and TOAradiation flux
Cloud fractionLarge scale
advection and vertical motion
+ -
++
+-
+
+Acid
-TIC-2
+YesPrecipitation
+
-
TIC-1 + No
+
+
+
+
GHG
-/+
DGF Process
Greenhouse
#1
Dehydration#2
Planetarycirculation
#3
?OUR ROAD MAP
PlanPlan
A 360A 360oo cloud view around the Polecloud view around the Pole Polar GHG & DGF versus NAO activityPolar GHG & DGF versus NAO activity Simulating atmospheric moisture in Simulating atmospheric moisture in
cold climatescold climatesMeasuring cold anomalies and water Measuring cold anomalies and water
budget budget TICFIRE projectTICFIRE project
A-Train : CloudSat – CALIPSO – AQUA – AURA – AIRS
Ref.: CALIPSO Web site
CALIPSO
CloudSat
PEARL
Frequent Arctic Overpass Frequent Arctic Overpass Compact Time Sampling and near 3D Horizon ViewCompact Time Sampling and near 3D Horizon View
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
PEARL
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
«« Tour Tour dd’’horizonhorizon »» around the Polearound the PoleJanuary 19, 2007January 19, 2007
PEARL
Frequent Arctic Overpass Frequent Arctic Overpass Compact Time Sampling and near 3D Horizon ViewCompact Time Sampling and near 3D Horizon View
+= ?
Loop #3 : The big circulationLoop #3 : The big circulation
Lorenz Energy CycleLorenz Energy Cycle
PM: mean available potential energyPE: eddy available potential energy, which is
composed of PSE and PTEPSE: stationary eddy available potential energyPTE: transient eddy available potential energyKM: mean kinetic energyKE: eddy kinetic energy, which is
composed of KTE and KSEKTE: transient eddy kinetic energyKSE: stationary eddy kinetic energyC(A,B) : conversion rate of A to Bhttp://wmolc.org/multi_model/energetics.php
G
G D
D
( ),j i j ij
dbpv v
dt xa p aw e
¶+ + = - -
¶
Kinetic Energy :
LorenzLorenz’’s Energy Cycle s Energy Cycle (Lorenz, 1967; Boer, 1975)(Lorenz, 1967; Boer, 1975)
pa Nc T Pº + b k paº +F-
p
ds dTQ T c
dt dtaw= = -
Kinetic Energy
GeopotentialWork
Heating Rate
Specific Volume
Vertical Motion
Potential Energy
Molecular Momentum Flux
Local Dissipation
Barotropic Reference Pressureda
NQdt
aw= +
Potential Energy :
( ) /1 / a pR c
rN p pº -
Lorenz Efficiency Factor :
STORMS
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Cooling processesCooling processesTotal Cooling ≈ -30 to - 50°C
Process #2: Direct IR
ΔT ≈ -16° to +10°C
Cooling over the total column in TIC-2
Process #3: Indirect IR
ΔT ≈ -5° to -10°C
Dehydration and opening of the grey far-IR window
Process #1: Dynamics
ΔT ≈ -10° to -20°C
Air is lifted along with aerosols
TIC-2B TIC-1
Dry radiation
Dry adiabatic
p
ds dTQ T c
dt dtaw= = -
aw
CLOUDS
dTdt
High Transmittance
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North Atlantic OscillationNAO
Ref.: Jim Hurrell, NCARhttp://www.cgd.ucar.edu/cas/jhurrell/indices.htmlhttp://earthobservatory.nasa.gov/Study/NAO/NAO_2.html
L
H
H
L– NAO
~30 years
+ NAO ~40 years
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Northeastern Canada – River Bassin HydrologyM. Slivitzky – Ouranos – Brown – CFLCo
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NAO
ELW
Equivalent Liquid Water(surface accumulation)
SO2 Trend75 90
Sulphur Dioxide Emission Trend
Ref.: David Stern http://stochastictrend.blogspot.ca/2011/03/global-trends-in-carbon-and-sulfur.html
Steve Smith of the Pacific Northwest National Laboratory
75 90
Sulphur Dioxide Emission Trend1990 - 2006
Ref.: http://www.eea.europa.eu/
75 90
North Atlantic Oscillation – NAO
Ref.: Osborn, T. @ http://www.cru.uea.ac.uk/cru/info/nao/
Positive Phase : High NAO
Negative Phase : Low NAO
64 year trend
Average Strong East Coast Winter Storms (ECWS)Winds Exceeding 52 mph
(US Northeast Regional Climate Center)
Strong ECWS
All ECWS
Observed Winter Storm Trend Northern Hemisphere
Number of intense (< 970hPa) winter cyclones per year in the Northern Hemisphere. The red line represents a 5 year running mean. Ref.: Lambert, S. J. (1996).
Anthropogenic Forcing of NAOEnsemble GCM Simulations for 2 Scenarios A2 and B2
(C. Cassou,2004: La Météorologie, 45, 21-33)
Control: Present ClimateExp.1: Pessimistic Case A2Exp.2: Moderate Case B2
Greenhouse GasesSulphate Aerosols (solar only)
Our question: What about IR ?
Sulphate – Clouds – Precipitationvia IR in the Arctic Polar Night
Dehydration Greenhouse Feedback(DGF)
?
Surface Pressure Anomalies (hPa)Surface Pressure Anomalies (hPa)due to acid aerosol + TICdue to acid aerosol + TIC--2B (DGF)2B (DGF)
-3.5
-2.5
+4
Europe
Russia
China
Kamchatka
Alaska
Greenland
Canada
Quebec
Ref.: Girard et al. 2012: Assessment of the effects of acid-coated ice nuclei on the Arctic cloud microstructure, atmospheric dehydration, radiation and temperature during winter. Int J. Climatol. DOE: 10.1002/joc.3454.
Cold AnomaliesCold Anomalies
L
Jan 2007
SIMULATED Jan-Feb 2007
L
Jan 2007
SIMULATED Jan-Feb 2007
L
Jan 2007
SIMULATED Jan-Feb 2007
Jan 2007
SIMULATED Jan-Feb 2007SIMULATED Jan-Feb 2007
The generation of cold air (blue-purple geopotential color contours versus warm yellow-orange subtropical) create gradients of geopotential where big winter storms are forming. Cold anomalies produce intense storm and severe weather.
Thus it is important to monitor the formation of cold air in the Arctic through TIC formation, precipitation and radiation
Ice clouds particles specific properties and atmospheric water amounts near detection limit suggest remote sensing applications in far-IR TICFIRE mission
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WATERWATERthe cornerstonethe cornerstone
Total Precipitable Water Errors over Antarctica in Summer
Ref.: Ye and Fetzer, 2006
Ref.: Ye and Fetzer, 2006
Percentage Difference with Elevation – Antarctica Summer
Colder
Ref.: Ye and Fetzer, 2006
Percentage Difference with Elevation – Greenland Summer
Error Variances: Model and ObservationsError Variances: Model and ObservationsPREMIER mission and othersPREMIER mission and others
Ref.: ESA SP-1313/5 Candidate Earth Explorer Core Missions – Reports for Assessment: Premier – Process Exploration through Measurements of Infrared and millimetre-wave RadiationSource : A. Waterfall
Measurement Gap in a Measurement Gap in a Critical Spectral RangeCritical Spectral Range
In Space Instruments Microwaves
?
FIR Sub-mm
Black Body
TICFIRE
Abs
orpt
ion
0
1
Mid-Upper Troposphere
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Wavelength (µm)
Tran
smitt
ance
CO2 FIR
Win
dow
Sensitivity of the FIR to Water Vapour Concentration for Arctic Air
Win
dow
2 km
5 km
1 km
MAÎTRISER LA LUMIÈRE POUR NOS PARTENAIRESCHALLENGING LIGHT FOR OUR PARTNERS
TICFIREPayload Concepts
UQÀM-INO-USher
TICFIRE: Mission & Science ObjectivesTICFIRE: Mission & Science Objectives(Thin Ice Clouds in Far Infra Red Experiment)
1- Monitor the formation of cold anomalies in Polar Regions and globally near the tropopause from far IR emissions
2- Fill an important gap in the far infrared range where most of the Earth’s atmosphere thermal cooling originate and yet unobserved from satellites.
3- Determine sub-visible cloud types and properties in extreme cold regions.
4- Improve measurements of water-vapour concentrationin the low limit (< 5mm columnar) where cold climate is most sensitive.
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TICFIRE: Concept and Key RequirementsTICFIRE: Concept and Key RequirementsParameter Requirement
Spectral Bands #1 : 7.9 – 9.5 µm#2 : 10 – 12 µm#3 : 12 – 14 µm
#4 : 17.25 – 19.75 µm #5 : 22.5 – 27.5 µm
#6 : 30 – 50 µmSpectral Response Flat within the each band
Dynamic range 0 – 45 W m-2 sr -1
Resolution 0.1 W m-2 sr -1
Accuracy 1.5 K for a reference temperature of 300 K
Vertical limb forward sampling
30 pixels in vertical x 1km640 pixels across track x 1km(averaged to 10km to match )
Geolocation Horizontal : Better than 2 kmVertical : Better than
Footprint size Horizontal : 10 km (GSD)Vertical : 1 km
Swath Horizontal : 640 kmVertical : 30 km
Mass: 30 kg Power Consumption: 29 W Data rate: 185 Mb per orbit Volume: 430 x 430 x 220 mm3
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TICFIRE payload: Limb instrumentTICFIRE payload: Limb instrument
NEP< 33 pW Resolution in radiance ~0.15 W/(m2 sr) for a 1 km x 1 km pixel Radiometric resolution better than 0.05 W/(m2 sr) if 10 horizontal pixels are
averaged
Commercial version for technology demonstration (INO)
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http://www.ldeo.columbia.edu/edu/dees/ees/Earthlimb/
Simulation in Simulation in LimbLimb ViewView
Clear Sky
TIC-2#1 #3#2 #4 #5 #6
#1 #3#2 #4 #5 #6
PROFILESH2O (< 2mm PCPW)
PROFILESTIC Top altitude
TIC Type COD (< 5)
Hei
ght(H
= 1
km)
Sensitive toupper layers
Sensitive tolower layers
TICFIRE payload: TICFIRE payload: Technology developmentTechnology development
STDP-4 TECHNOLOGIES FOR FUTURE MISSIONS
PRIORITY TECHNOLOGY 7: FAR IR COATINGS AND FOCAL PLANE ARRAY
DEVELOPMENT FOR THE TICFIRE MISSION
Supported by the Canadian Space Agency (Contract 9F063-100359/002/MTB- Project PT-7)
Sensor for TICFIRE nadir instrument:
3 x 32 microbolometermatrix
Far-IR coatings:
TICFIRE filters
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MicrobolometerMicrobolometer Infrared Detector TechnologyInfrared Detector TechnologyCharacteristics of INO Uncooled Microbolometer Technology: no cryogenic cooling required: micro and nanosatellite compatible broadband sensitivity
MWIR (3-5 µm) LWIR (8-12.5 µm) TICFIRE VLWIR (14-27 µm) TICFIRE THz (> 35 µm, 100 µm) TICFIRE Broadband (0.2->50 µm) BBR
NEP* on order 5 pW/root Hz detector pitch 25 to 100 µm space qualifiable ROIC formats 256x1, 512x3, 160x120, custom
IRL512 prototypes in test packages LWIR line-scan image (256x1) THz image
256x1 pixel FPA
Gold Black for Broadband DetectorsGold Black for Broadband Detectors‗ Gold black is the only absorber film suitable for integration with fast MEMS thermal
sensors
‗ The only other fully operational gold black facility is at NASA Goddard; it is not generally available to third parties
‗ Integration with microbolometer detectors has been demonstrated
• Measured pixel level absorption to above 90 % from visible to far infrared
• Detector thermal capacity increased by less than 50 %
‗ INO gold black film was integrated with custom linear detector array for EarthCARE BBR
10-1 100 101 102-2
0
2
4
6
8
10
Wavelength [µm]
Rel
fect
ance
[%]
Vertex 70 (16-50 µm)Vertex 70 (2.0-26 µm)Lambda 19 (0.2-2.5 µm)
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Optical Optical coatingscoatings: Equipment: Equipment Thin film box coater key issues Thin film box coater key issues ::
oo FARFAR--IR thin film evaporation by thermal evaporator IR thin film evaporation by thermal evaporator oo Evaporation rate controlEvaporation rate controloo Film Film stoichiometrystoichiometry control control oo Densification improvement ( Temperature and IAD options)Densification improvement ( Temperature and IAD options)oo Cryogenic pumping for efficient Cryogenic pumping for efficient vaporvapor water removalwater removaloo Optical thickness measurement accuracyOptical thickness measurement accuracyoo Preliminary filter design required to answer questions !Preliminary filter design required to answer questions !
Typical BAK-760 unequipped chamber layout INO’s BAK-760 Ion-Assisted Deposition (IAD)63
Operational TICFIRE roadmap201320122011 2014 2015 2016 2017 2018
FPA 3 x 32TRL3 TRL6
12
TRL
3456789
FIR filtresTRL3 TRL6
Star trackerTRL6 TRL6
TICFIRE (microsat /Quicksat platform)TRL3 TRL7
TICFIRE on operational satellitesTRL5 TRL9
TRL5
TRL5
TRL6
Estimated Launch Date
Winter field campaigns
TRL6 TRL7
TRL5
Calibration/Validation campaign
TRL3B/A-borne TICFIRE
TRL4
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TICFIRE Data ProductsTICFIRE Data Products
XXXXXXX X ↔↔#6#6
XXXXX X ↔↔#5#5
XXXXXXX X ↔↔#4#4
XXXXXXXXX X ↔↔#3#3
XXXXXXXXX X ↔↔ ↕↕#2#2
XXXXX X ↔↔#1#1
PhasePhaseIce ShapeIce ShapeTsTsCODCODWater VaporWater Vapor(Low Range)(Low Range)
Part. SizePart. Size(TIC Type)(TIC Type)
Cloud TopCloud Top((LimbLimb))
RadianceRadiance(BT)(BT)
SpectralSpectralBandsBands
Level 1 Level 2a Level 2b
FIR
Win
dow
↔ : Nadir view↕ : Limb view
SummarySummary TICFIRE Mission Concept proposes new spectral bands for Earth
observation to monitor the formation of cold anomalies and water vapour measurements
Covers a important and unexplored spectral range for space-borne applications
Aims at polar and cold regions globally (and tropopause)
Key data for severe storm generation medium range forecasting and climate
Despite the fact that TICFIRE was defined as a standalone mission, its instruments would be a nice secondary payload for other cloud-aerosol oriented missions as well as for precipitation oriented missions involving microwave radar/radiometer or polarized radar
Technology developments are initiated to support TICFIRE mission (far-IR sensor and filters)
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SummarySummary Thin ice clouds are dominant feature of Thin ice clouds are dominant feature of
the polar nightthe polar night Atmospheric models generally Atmospheric models generally
overestimate water vapour in cold air by overestimate water vapour in cold air by as much as 30 to 40%as much as 30 to 40%
Lacking effective light precipitation Lacking effective light precipitation (TIC(TIC--2)2)physics parameterizationphysics parameterization
Both GHG and aerosol sulphate favours Both GHG and aerosol sulphate favours the + NAO phase.the + NAO phase.
Take home message : Take home message :
pay attention to pay attention to atmospheric WATERatmospheric WATER
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