PROjection for nearFuture HIIPROF 1 Sagnik Dey and 2 S K Dash 1 Centre for Atmospheric Sciences IIT Delhi India 2 Former Head CAS and President IMS Contact sagnikcasiitdacin ID: 927324
Download Presentation The PPT/PDF document "Heat-stress Index for India:" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
Heat-stress Index for India: PROjection for near-Future (HIIPROF)
1Sagnik Dey and 2S. K. Dash1Centre for Atmospheric Sciences, IIT Delhi, India2Former Head, CAS and President, IMSContact: sagnik@cas.iitd.ac.inWebpage: web.iitd.ac.in/~sagnik
1/14
Collaboration: S. N. Tripathi (IITK), V. Venugopal (SRU), R. Sunder Raman (IISERB), P. K. Nag (RKMVU)Acknowledgement: Department of Science and Technology, Climate Change Program, Climate and Health Network
IMS Workshop, Delhi, Mar 23, 2019
Slide2Heat-stress Indices
2/143. Universal Thermal Climate Index (UTCI)2. Heat Index (HI), which was proposed by
Rothfusz in 19901. Humidex =UTCI was developed in Europe, aiming to quantify both heat and cold stress.
4. Wet Bulb Globe Temperature (WBGT) is a very common and simple index used in monitoring and assessing hot environmental conditions and so it is considered suitable worldwide.WBGT (outdoor) = 0.7 Tnwb × 0.2 Tg × 0.1 TaWBGT (Indoor) = 0.7 T
nwb
× 0.3 T
g
Formula source: Lemke and
Kjellstrom
, 2012; Dash and
Kjellstrom
, 2011.
T
a
is air temperature in °C.
T
dew
is the dew point in °C
Slide3C
limatology (30 years) of Heat-stress3/14
#District as per different comfort zoneWBGT
Comfort level
March
April
May
June
<18
Comfortable
46
37
23
16
18 - 24
Warm
232
41
22
21
24- 28
Hot
297
309
94
135
28 - 30
Very Hot
10
196
221
187
30 <
Sweltering
0
2
225
226
Slide4Vulnerability Analysis
4/14Vulnerable districts are identifiedHeat-stress condition shows regional shift as the summer progresses
Slide5First Coordinated Measurement
5/14
Kanpur BhopalKolkata
DelhiGandhinagarChennai
WBGT =
a
1
T
a
+ b
1
RH
+
c
1
WS
+ d
1
(Radiation) +
e
Simultaneous measurement of
WBGT and
meteorological parameters
Slide6Physiological Response
6/14 Physiological response study and defining threshold limitThermo-graphic Images
Work/rest regimenLight
ModerateHeavyContinuous work
30.0
°C (86°F)
26.7
°C (80°F)
25.0
°C (77°F)
75
% Work, 25% rest, each hour
30.6
°C (87°F)
28.0
°C (82°F)
25.9
°C (78°F)
50
% Work, 50% rest, each hour
31.4
°C (89°F)
29.4
°C (85°F)
27.9
°C (82°F)
25
% Work, 75% rest, each hour
32.2
°C (90°F)
31.1
°C (88°F)
30.0
°C (86°F)
Finding ranges for the following in Indian context and
MODIFY
as per Indian context
Comfort/Indices
WBGT
Comfortable
Warm
Hot
Very Hot
Sweltering
<18
18-24
24-28
28-30
>30
Slide7Testing Efficiency of Interventions
7/14Boiled mango drinks (Aam Panna)Sattu drinks
Lemon drinks
Slide8Heat-stress Survey - Online
8/14Google form in English/Hindi: ~100 responses every day for 2 months
Slide9Heat-stress Survey - Offline
9/14Questionnaire1.Gender2.Age group3.Location/city4.PIN/ZIP code5.Perception on heat-stress6.Types of activity7.Working condition8.Types of clothing/dress-up
Slide10Mismatch of Perception with Data
10/14
Slide11App-based (Android) Survey
Android app has been developed – Google play storeFirst login – with Google profileData collection through NDMA, IMS local chapters, other governmental agencies and NGOs, social mediaTarget: ~1000 responses daily for each climate zoneAnalysis using modified heat-stress index
11/14
Slide121
. Search “Heat stress survey” on Google play store1546https://heatstress.000webhostapp.com/heatstress
Heat stress India (website)App-based (Android) Survey
12/14
2
3
Slide135. Working
conditionExposed to direct SunShadingIndoor
6. ClothingNormal Dress
MinimalFully covered hands and face also protected
4. Which
kind of activity were you involved with today?
No activity
Light
Moderate
Heavy
3. How
did you feel today?
Comfortable
Warm
Very-hot
Sweltering
1. How
is the day?
Dry and hot
Humid
Windy
Rainy
2. When
did you feel maximum discomfort
11 Am to 1:30 PM
1:30 PM to 4:00 PM
Survey Questionnaire
13/14
Slide14Summary
14/14Quantifying heat-stress suitable for Indian condition is critical to for heat management action planInitiative has been taken to fine tune heat-stress index for India and vulnerable districts are identified Heat-stress network needs to be expandedAppeal to the community – Take part in the survey to enrich the database on physical comfort in Indian condition across the climate zones