XXII ISPRS Congress 2012: Technical Commission VIII

Shortis, M.; Shimoda, H.; Cho, K.

Bibliographic data

Multivolume work

Persistent identifier:: 1663813779

Title:: XXII ISPRS Congress 2012

Sub title:: Melbourne, Australia, 25 August-1 September 2012

Year of publication:: 2013

Place of publication:: Red Hook, NY

Publisher of the original:: Curran Associates, Inc.

Identifier (digital):: 1663813779

Language:: English

Additional Notes:: Kongress-Thema: Imaging a sustainable future

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Document type:: Multivolume work

Volume

Persistent identifier:: 1663822514

Title:: Technical Commission VIII

Scope:: 590 Seiten

Year of publication:: 2014

Place of publication:: Red Hook, NY

Publisher of the original:: Curran Associates, Inc.

Identifier (digital):: 1663822514

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(39,B8)

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist ermittelt.; Literaturangaben

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Shortis, M.; Shimoda, H.; Cho, K.

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2019

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: [VIII/6: Agriculture, Ecosystems and Bio-Diversity]

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: ASSESSMENT OF INDIAN CARBON CYCLE COMPONENTS USING EARTH OBSERVATION SYSTEMS AND GROUND INVENTORY V. K. Dadhwal

Document type:: Multivolume work

Structure type:: Chapter

2.4 Scaling of carbon fluxes by Modelling techniques Carbon dioxide (CO;) is a major greenhouse gas and its rapid increase in the atmosphere after the pre-industrial time is the cause of recent time global warming and climate change (IPCC reports 1995). Much of the current increasing trend of CO; is attributable to the 6-fold increase in human use of fossil fuel, deforestation and other anthropogenic activities. Of the total anthropogenic CO, emission, only 30 - 40% remains in the atmosphere and the rest is being absorbed by ocean and terrestrial biosphere (IPCC reports 1995). While anthropogenic release of CO, is continuously increasing at a rapid rate, sinking strength of the natural system: terrestrial biosphere and ocean is decreasing (Berthelot et al., 2005). Thus controlling the growth rate of atmospheric CO; by reducing the anthropogenic CO, release and helping natural system for enhancing uptake capacity of atmospheric CO, is a major challenge. There have been a few studies on assessing spatial and temporal patterns of satellite based biophysical parameters and NPP over India. Estimates of monthly net C fixation and net primary productivity over India and its eight regions, using SPOT-VEGETATION 10-day NPP composites, and comparing the monthly patterns of NPP and NDVI was made (Chhabra and Dadhwal, 2004).The total net C fixation of India was estimated as 2.18 PgC, which amounts to area-weighted terrestrial NPP of 6.66 tCha™ yr! for the period June 1998 May 1999. An analysis of monthly fAPAR dataset derived from NOAA-AVHRR data covering the period from July 1981 to May 2001 over the Indian land mass was carried out (Pandya et al., 2004). 2.4.1 Measurement through ground base network over India For quantitative understanding of regional CO, transport and its variations with regional environmental boundary condition different spatial and temporal scales have to be analysed through field measurements. The distributed dense networks of observations would be useful to represent the CO, changes due to geographic and local environmental conditions. NCP is making continuous efforts towards multiplying ground based net work across the country by installing sensors for measuring boundary layer atmospheric CO,, flux towers for measuring the CO, flux exchanges between selected ecosystems and atmosphere. Under this program, Vaisala CARBOCAP GMP343 is installed at six stations and some are under plan. The Vaisala CARBOCAP GMP343 is an accurate and rugged probe type instrument that can measure atmospheric CO, with acceptable compromise between size, response time accuracy and stability. Analysis of data obtained from Dehradun station for the year 2009 was done (Sharma et al, 2011) and work is under progress for other stations. The data at Dehradun exhibit distinct diurnal and semi-annual cycles. CO; decreases during sunrise to afternoon and increases during afternoon to sunset. It remains higher during the night time. The semi-annual cycle has decreasing phase during Feb-March and July-Sep, and has increasing phase during rest of the period. This observed variability of atmospheric CO, is mostly driven by local ecosystem activity. 2.4.2 Analysis of satellite measured atmospheric CO2 Recently several space based observation programs such as Atmospheric Infra Red Sounder (AIRS), SCanning Imaging International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXIX-B8, 2012 XXII ISPRS Congress, 25 August — 01 September 2012, Melbourne, Australia Absorption spectro Meter for Atmospheric CartograpHY (SCHIAMACHY), Greenhouse gases Observing SATellite (GOSAT).AIRS can measure CO, at mid troposphere while SCHIAMACHY and GOSAT can measure columnar atmospheric CO,. We have analyzed the data obtained from these satellite observations over India and surrounding oceans and tried to link with surface fluxes (source and sink). Since AIRS provides observations since 2002 till now, this data has been extensively used for analysis (Nayak et al., 2011). An increasing rate mid tropospheric CO, is 2.14 ppmv yr! is observed, which is almost the same as that of observed CO, at Maunaloa. The annual cycle has larger amplitude over the land than over the oceans. There also exist inter-annual variations in the observation. In order to understand the causes of such variability, we have computed fluxes of CO; exchanges over the land (India) and over the oceans through integrating different data bases (remote sensed and observed) in to different models developed in the recent past for the purpose. The description of the modelling approach followed is provided in Nayak et al., 2011. On inter-annual scale, flux exchanges over the tropical north Indian Ocean could play positive role on the control of atmospheric carbon dioxide growth rate (Nayak et al., 2011). 2.4.5 Modeling NPP, NEP and associated parameters related to Carbon Cycle over terrestrial India The Carnegie-Ames-Stanford Approach (CASA), a terrestrial biosphere model, has been used to investigate spatiotemporal pattern of net primary productivity (NPP) during 2003 over the Indian subcontinent. Sensitivity analysis suggest that the difference could be due to inclusion of variable light use efficiency (LUE) across different land cover types and environment stress scalars as down regulator of NPP in the present CASA model study.(Nayak et al., 2011). Recently we have also implemented CASA model to simulate NPP, NEP, soil respiration etc. over India at 2x2 min spatial resolution. In the national scale, average annual NPP is estimated to be 1.5 Pg C Yr' and is increasing at the rate of 0.005 Pg C Yr? during past 25 years from 1981-2006. This trend is equivalent to 8.596 over the country during past 25 years. This increase is primarily due to the enhancement of productivity over agricultural lands in the country. Variability of precipitation has stronger role on the control of inter-annual variability of NPP. Spatial distribution of NPP trend is different in different places and in different periods. In the recent time (1995 onwards), large decline of NPP over the Indo-Gangetic plane is observed owing to decline of rain over the regions. Estimated NEP budget for the country suggest that, on an average India is the region of net sink of atmospheric CO, with total annual uptake of 9.5 Tg C yr'. There exists strong inter-annual variability of NEP over the country. Except early period (1981-1985), most of the years India is net sink of atmospheric CO;. 2.5 Estimation and modeling of geochemical C-fluxes- weathering, wetland effluxes, sediment erosion and deposition, riverine and coastal C-flows. Geochemical fluxes, comprising of variety of processes, though much smaller in magnitude comprise important fraction of Int charz over fresh 2009 Studi abou all | (DC: 251 half | Usin potet coun 232 kg/h havii kg/h: loss. ACH Thar proje Refe Bald Di R., | Mall Pile qs to st carb Am. Bert ne, € char Glol Bha Stan Deg Utta 56(2 Bon char and Fon Che redu Biog Chh net | Scie Chh carb 173

Access restriction

Copyright

fullscreen: Technical Commission VIII (B8)

Multivolume work

Volume

Chapter

Chapter

Table of contents

Cite and reuse

Volume

Chapter

Image

Image fragment

Citation links

Citation recommendation